./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:46:30,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:46:30,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:46:30,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:46:30,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:46:30,756 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:46:30,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:46:30,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:46:30,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:46:30,759 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:46:30,760 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:46:30,761 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:46:30,762 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:46:30,764 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:46:30,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:46:30,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:46:30,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:46:30,767 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:46:30,768 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:46:30,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:46:30,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:46:30,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:46:30,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:46:30,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:46:30,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:46:30,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:46:30,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:46:30,775 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:46:30,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:46:30,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:46:30,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:46:30,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:46:30,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:46:30,777 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:46:30,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:46:30,779 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:46:30,780 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:46:30,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:46:30,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:46:30,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:46:30,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:46:30,783 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 20:46:30,795 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:46:30,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:46:30,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:46:30,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:46:30,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:46:30,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:46:30,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:46:30,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:46:30,800 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:46:30,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:46:30,801 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:46:30,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 20:46:30,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:46:30,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:46:30,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:46:30,801 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:46:30,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:46:30,802 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:46:30,802 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:46:30,802 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:46:30,802 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:46:30,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:46:30,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:46:30,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:46:30,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:46:30,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:46:30,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:46:30,803 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:46:30,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 20:46:30,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 20:46:30,804 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:46:30,804 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:46:30,804 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:46:30,804 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:46:30,804 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:46:30,804 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2023-02-15 20:46:31,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:46:31,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:46:31,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:46:31,036 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:46:31,037 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:46:31,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2023-02-15 20:46:32,013 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:46:32,163 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:46:32,163 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2023-02-15 20:46:32,167 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc75d597/8668224f7c0941388a6c00c19a7123da/FLAG9298eb82a [2023-02-15 20:46:32,192 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fc75d597/8668224f7c0941388a6c00c19a7123da [2023-02-15 20:46:32,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:46:32,195 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:46:32,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:46:32,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:46:32,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:46:32,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596e7cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32, skipping insertion in model container [2023-02-15 20:46:32,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:46:32,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:46:32,362 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2023-02-15 20:46:32,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:46:32,398 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:46:32,406 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2023-02-15 20:46:32,421 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:46:32,429 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:46:32,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32 WrapperNode [2023-02-15 20:46:32,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:46:32,432 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:46:32,432 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:46:32,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:46:32,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,441 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,457 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2023-02-15 20:46:32,457 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:46:32,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:46:32,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:46:32,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:46:32,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,473 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,480 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,487 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:46:32,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:46:32,493 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:46:32,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:46:32,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (1/1) ... [2023-02-15 20:46:32,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:46:32,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:32,531 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 20:46:32,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 20:46:32,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:46:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 20:46:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 20:46:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 20:46:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:46:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:46:32,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:46:32,559 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:46:32,602 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:46:32,604 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:46:32,729 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:46:32,732 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:46:32,733 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 20:46:32,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:46:32 BoogieIcfgContainer [2023-02-15 20:46:32,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:46:32,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:46:32,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:46:32,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:46:32,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:46:32" (1/3) ... [2023-02-15 20:46:32,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e922a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:46:32, skipping insertion in model container [2023-02-15 20:46:32,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:32" (2/3) ... [2023-02-15 20:46:32,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e922a8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:46:32, skipping insertion in model container [2023-02-15 20:46:32,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:46:32" (3/3) ... [2023-02-15 20:46:32,739 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2023-02-15 20:46:32,749 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:46:32,749 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:46:32,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:46:32,781 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e13da68, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:46:32,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:46:32,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 20:46:32,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 20:46:32,788 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:32,789 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:32,789 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:32,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:32,792 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2023-02-15 20:46:32,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:32,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006286949] [2023-02-15 20:46:32,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:32,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:32,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:32,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006286949] [2023-02-15 20:46:32,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 20:46:32,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037810558] [2023-02-15 20:46:32,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:32,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:32,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:32,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:32,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 20:46:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:32,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 20:46:32,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:33,006 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 20:46:33,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:46:33,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037810558] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:46:33,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:46:33,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 20:46:33,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701981767] [2023-02-15 20:46:33,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:46:33,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 20:46:33,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:33,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 20:46:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:46:33,031 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 20:46:33,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:33,047 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2023-02-15 20:46:33,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 20:46:33,048 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-02-15 20:46:33,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:33,052 INFO L225 Difference]: With dead ends: 67 [2023-02-15 20:46:33,052 INFO L226 Difference]: Without dead ends: 31 [2023-02-15 20:46:33,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:46:33,056 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:33,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:46:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-15 20:46:33,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-15 20:46:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 20:46:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-02-15 20:46:33,080 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2023-02-15 20:46:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:33,080 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-02-15 20:46:33,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 20:46:33,081 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-02-15 20:46:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 20:46:33,082 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:33,082 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:33,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:33,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 20:46:33,287 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:33,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:33,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2023-02-15 20:46:33,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:33,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696882153] [2023-02-15 20:46:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:33,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:33,313 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:33,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [296787198] [2023-02-15 20:46:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:33,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:33,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:33,319 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:33,320 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 20:46:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:33,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 20:46:33,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:46:33,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:46:33,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:33,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696882153] [2023-02-15 20:46:33,456 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:33,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296787198] [2023-02-15 20:46:33,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296787198] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:46:33,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:46:33,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 20:46:33,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670736682] [2023-02-15 20:46:33,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:46:33,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 20:46:33,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:33,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 20:46:33,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 20:46:33,461 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:46:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:33,574 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2023-02-15 20:46:33,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:46:33,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2023-02-15 20:46:33,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:33,576 INFO L225 Difference]: With dead ends: 50 [2023-02-15 20:46:33,588 INFO L226 Difference]: Without dead ends: 43 [2023-02-15 20:46:33,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-15 20:46:33,590 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:33,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 113 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:46:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-15 20:46:33,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2023-02-15 20:46:33,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 20:46:33,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-02-15 20:46:33,605 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2023-02-15 20:46:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:33,605 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-02-15 20:46:33,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:46:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-02-15 20:46:33,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 20:46:33,606 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:33,606 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:33,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 20:46:33,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 20:46:33,811 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:33,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:33,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2023-02-15 20:46:33,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:33,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222293343] [2023-02-15 20:46:33,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:33,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:33,824 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:33,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1290913758] [2023-02-15 20:46:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:33,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:33,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:33,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:33,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 20:46:33,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:33,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-15 20:46:33,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:34,135 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 20:46:34,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:46:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:46:34,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:34,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222293343] [2023-02-15 20:46:34,285 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:34,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290913758] [2023-02-15 20:46:34,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290913758] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:46:34,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:46:34,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2023-02-15 20:46:34,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410276922] [2023-02-15 20:46:34,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:46:34,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 20:46:34,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:34,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 20:46:34,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-02-15 20:46:34,291 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:46:34,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:34,378 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-02-15 20:46:34,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 20:46:34,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2023-02-15 20:46:34,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:34,382 INFO L225 Difference]: With dead ends: 49 [2023-02-15 20:46:34,382 INFO L226 Difference]: Without dead ends: 47 [2023-02-15 20:46:34,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:46:34,385 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 18 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:34,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 147 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:46:34,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-15 20:46:34,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-15 20:46:34,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-15 20:46:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-02-15 20:46:34,398 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2023-02-15 20:46:34,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:34,399 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-02-15 20:46:34,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:46:34,400 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-02-15 20:46:34,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 20:46:34,400 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:34,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:34,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 20:46:34,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:34,608 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:34,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2023-02-15 20:46:34,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:34,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955439790] [2023-02-15 20:46:34,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:34,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:34,626 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:34,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [402938188] [2023-02-15 20:46:34,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:34,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:34,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:34,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:34,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 20:46:34,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:34,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 20:46:34,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:46:34,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:46:34,793 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:46:34,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:34,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955439790] [2023-02-15 20:46:34,794 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:34,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402938188] [2023-02-15 20:46:34,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402938188] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:46:34,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:46:34,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-02-15 20:46:34,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599558020] [2023-02-15 20:46:34,795 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:46:34,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 20:46:34,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 20:46:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-15 20:46:34,796 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 20:46:34,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:34,932 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2023-02-15 20:46:34,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 20:46:34,932 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-02-15 20:46:34,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:34,934 INFO L225 Difference]: With dead ends: 99 [2023-02-15 20:46:34,934 INFO L226 Difference]: Without dead ends: 92 [2023-02-15 20:46:34,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:46:34,935 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:34,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 209 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:46:34,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-02-15 20:46:34,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2023-02-15 20:46:34,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-15 20:46:34,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2023-02-15 20:46:34,946 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2023-02-15 20:46:34,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:34,946 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2023-02-15 20:46:34,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 20:46:34,947 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2023-02-15 20:46:34,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 20:46:34,947 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:34,947 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:34,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:35,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:35,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:35,153 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2023-02-15 20:46:35,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:35,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651720646] [2023-02-15 20:46:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:35,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:35,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [944352709] [2023-02-15 20:46:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:35,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:35,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:35,172 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:35,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 20:46:35,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:35,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 30 conjunts are in the unsatisfiable core [2023-02-15 20:46:35,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:35,445 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 20:46:35,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:46:35,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:35,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651720646] [2023-02-15 20:46:35,626 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:35,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944352709] [2023-02-15 20:46:35,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944352709] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 20:46:35,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:46:35,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-02-15 20:46:35,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655009203] [2023-02-15 20:46:35,626 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 20:46:35,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 20:46:35,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:35,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 20:46:35,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-02-15 20:46:35,627 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-15 20:46:35,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:35,892 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2023-02-15 20:46:35,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 20:46:35,892 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 38 [2023-02-15 20:46:35,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:35,893 INFO L225 Difference]: With dead ends: 82 [2023-02-15 20:46:35,893 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 20:46:35,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-02-15 20:46:35,894 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 57 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:35,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 135 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 20:46:35,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 20:46:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2023-02-15 20:46:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-15 20:46:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2023-02-15 20:46:35,904 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2023-02-15 20:46:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:35,905 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2023-02-15 20:46:35,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-15 20:46:35,905 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2023-02-15 20:46:35,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 20:46:35,906 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:35,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:35,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:36,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:36,111 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:36,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:36,112 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2023-02-15 20:46:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:36,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147953618] [2023-02-15 20:46:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:36,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:36,121 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:36,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98730106] [2023-02-15 20:46:36,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:36,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:36,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:36,123 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:36,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 20:46:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:36,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-15 20:46:36,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 20:46:36,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:46:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:46:36,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:36,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147953618] [2023-02-15 20:46:36,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:36,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98730106] [2023-02-15 20:46:36,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98730106] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:46:36,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:46:36,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2023-02-15 20:46:36,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467031523] [2023-02-15 20:46:36,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:46:36,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-15 20:46:36,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:36,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-15 20:46:36,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-02-15 20:46:36,502 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-15 20:46:37,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:37,449 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2023-02-15 20:46:37,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 20:46:37,455 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 38 [2023-02-15 20:46:37,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:37,456 INFO L225 Difference]: With dead ends: 114 [2023-02-15 20:46:37,456 INFO L226 Difference]: Without dead ends: 112 [2023-02-15 20:46:37,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-02-15 20:46:37,457 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 83 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:37,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 293 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 20:46:37,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-15 20:46:37,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 101. [2023-02-15 20:46:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 71 states have internal predecessors, (88), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-15 20:46:37,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2023-02-15 20:46:37,471 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 38 [2023-02-15 20:46:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:37,471 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2023-02-15 20:46:37,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-15 20:46:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2023-02-15 20:46:37,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 20:46:37,472 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:37,472 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:37,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:37,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:37,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:37,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:37,677 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2023-02-15 20:46:37,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:37,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53117411] [2023-02-15 20:46:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:37,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:37,686 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:37,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938540216] [2023-02-15 20:46:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:37,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:37,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:37,688 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:37,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 20:46:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:37,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 20:46:37,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:37,837 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 20:46:37,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:46:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-15 20:46:38,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:38,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53117411] [2023-02-15 20:46:38,042 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:38,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938540216] [2023-02-15 20:46:38,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938540216] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:46:38,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:46:38,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 14 [2023-02-15 20:46:38,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141725952] [2023-02-15 20:46:38,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:46:38,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:46:38,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:38,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:46:38,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:46:38,043 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:46:38,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:38,092 INFO L93 Difference]: Finished difference Result 147 states and 209 transitions. [2023-02-15 20:46:38,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:46:38,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2023-02-15 20:46:38,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:38,093 INFO L225 Difference]: With dead ends: 147 [2023-02-15 20:46:38,093 INFO L226 Difference]: Without dead ends: 145 [2023-02-15 20:46:38,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-15 20:46:38,094 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:38,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 124 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:46:38,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-15 20:46:38,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2023-02-15 20:46:38,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 88 states have internal predecessors, (112), 45 states have call successors, (45), 6 states have call predecessors, (45), 6 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-02-15 20:46:38,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 201 transitions. [2023-02-15 20:46:38,119 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 201 transitions. Word has length 43 [2023-02-15 20:46:38,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:38,119 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 201 transitions. [2023-02-15 20:46:38,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:46:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 201 transitions. [2023-02-15 20:46:38,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 20:46:38,120 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:38,120 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:38,140 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:38,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:38,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash -2141198011, now seen corresponding path program 1 times [2023-02-15 20:46:38,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:38,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9816635] [2023-02-15 20:46:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:38,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:38,334 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:38,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1238074058] [2023-02-15 20:46:38,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:38,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:38,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:38,336 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:38,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 20:46:38,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:38,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-15 20:46:38,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:38,676 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:46:38,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:46:38,926 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:46:38,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:38,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9816635] [2023-02-15 20:46:38,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:38,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238074058] [2023-02-15 20:46:38,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238074058] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:46:38,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:46:38,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 22 [2023-02-15 20:46:38,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463218947] [2023-02-15 20:46:38,927 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:46:38,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 20:46:38,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:38,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 20:46:38,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2023-02-15 20:46:38,928 INFO L87 Difference]: Start difference. First operand 139 states and 201 transitions. Second operand has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-02-15 20:46:43,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:43,292 INFO L93 Difference]: Finished difference Result 182 states and 254 transitions. [2023-02-15 20:46:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-15 20:46:43,292 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 43 [2023-02-15 20:46:43,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:43,294 INFO L225 Difference]: With dead ends: 182 [2023-02-15 20:46:43,294 INFO L226 Difference]: Without dead ends: 180 [2023-02-15 20:46:43,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 360 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=334, Invalid=1388, Unknown=0, NotChecked=0, Total=1722 [2023-02-15 20:46:43,295 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 164 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:43,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 191 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-15 20:46:43,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-15 20:46:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 171. [2023-02-15 20:46:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 111 states have (on average 1.2612612612612613) internal successors, (140), 115 states have internal predecessors, (140), 51 states have call successors, (51), 8 states have call predecessors, (51), 8 states have return successors, (50), 47 states have call predecessors, (50), 50 states have call successors, (50) [2023-02-15 20:46:43,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 241 transitions. [2023-02-15 20:46:43,326 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 241 transitions. Word has length 43 [2023-02-15 20:46:43,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:43,326 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 241 transitions. [2023-02-15 20:46:43,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.0476190476190474) internal successors, (43), 19 states have internal predecessors, (43), 5 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-02-15 20:46:43,327 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 241 transitions. [2023-02-15 20:46:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 20:46:43,327 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:43,327 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:43,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:43,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 20:46:43,532 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1796916029, now seen corresponding path program 2 times [2023-02-15 20:46:43,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:43,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020053392] [2023-02-15 20:46:43,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:43,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:43,542 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:43,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1209131123] [2023-02-15 20:46:43,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 20:46:43,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:43,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:43,545 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:43,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 20:46:43,594 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 20:46:43,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 20:46:43,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 20:46:43,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:46:43,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:46:43,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:43,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020053392] [2023-02-15 20:46:43,609 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:43,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209131123] [2023-02-15 20:46:43,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1209131123] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:46:43,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:46:43,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 20:46:43,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332432835] [2023-02-15 20:46:43,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:46:43,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:46:43,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:43,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:46:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:46:43,610 INFO L87 Difference]: Start difference. First operand 171 states and 241 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:46:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:43,730 INFO L93 Difference]: Finished difference Result 217 states and 301 transitions. [2023-02-15 20:46:43,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:46:43,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2023-02-15 20:46:43,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:43,732 INFO L225 Difference]: With dead ends: 217 [2023-02-15 20:46:43,732 INFO L226 Difference]: Without dead ends: 136 [2023-02-15 20:46:43,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-15 20:46:43,733 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 19 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:43,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 139 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:46:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-15 20:46:43,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 113. [2023-02-15 20:46:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 71 states have (on average 1.1830985915492958) internal successors, (84), 74 states have internal predecessors, (84), 33 states have call successors, (33), 8 states have call predecessors, (33), 8 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-02-15 20:46:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 149 transitions. [2023-02-15 20:46:43,757 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 149 transitions. Word has length 43 [2023-02-15 20:46:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:43,757 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 149 transitions. [2023-02-15 20:46:43,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:46:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 149 transitions. [2023-02-15 20:46:43,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-15 20:46:43,758 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:43,758 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:43,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:43,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:43,963 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:43,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:43,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2023-02-15 20:46:43,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:43,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744943866] [2023-02-15 20:46:43,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:43,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:43,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:43,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1931045245] [2023-02-15 20:46:43,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:43,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:43,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:43,981 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:43,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 20:46:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:44,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 20:46:44,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-15 20:46:44,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:46:44,108 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-15 20:46:44,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:44,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744943866] [2023-02-15 20:46:44,108 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:44,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931045245] [2023-02-15 20:46:44,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931045245] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:46:44,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:46:44,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-02-15 20:46:44,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063804255] [2023-02-15 20:46:44,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:46:44,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:46:44,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:44,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:46:44,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-15 20:46:44,111 INFO L87 Difference]: Start difference. First operand 113 states and 149 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-15 20:46:44,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:44,162 INFO L93 Difference]: Finished difference Result 119 states and 154 transitions. [2023-02-15 20:46:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:46:44,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2023-02-15 20:46:44,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:44,164 INFO L225 Difference]: With dead ends: 119 [2023-02-15 20:46:44,164 INFO L226 Difference]: Without dead ends: 117 [2023-02-15 20:46:44,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-15 20:46:44,165 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:44,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:46:44,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-02-15 20:46:44,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2023-02-15 20:46:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 74 states have (on average 1.1756756756756757) internal successors, (87), 77 states have internal predecessors, (87), 33 states have call successors, (33), 9 states have call predecessors, (33), 9 states have return successors, (32), 30 states have call predecessors, (32), 32 states have call successors, (32) [2023-02-15 20:46:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2023-02-15 20:46:44,184 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 48 [2023-02-15 20:46:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:44,185 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2023-02-15 20:46:44,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-15 20:46:44,186 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2023-02-15 20:46:44,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 20:46:44,188 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:44,188 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:44,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:44,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 20:46:44,393 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:44,393 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2023-02-15 20:46:44,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:44,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217967763] [2023-02-15 20:46:44,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:44,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:44,401 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:44,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1355668550] [2023-02-15 20:46:44,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:44,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:44,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:44,410 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:44,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 20:46:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:44,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 60 conjunts are in the unsatisfiable core [2023-02-15 20:46:44,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:44,906 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-15 20:46:44,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:46:45,499 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-15 20:46:45,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:45,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217967763] [2023-02-15 20:46:45,500 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:45,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1355668550] [2023-02-15 20:46:45,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1355668550] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:46:45,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:46:45,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2023-02-15 20:46:45,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514919179] [2023-02-15 20:46:45,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:46:45,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 20:46:45,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:45,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 20:46:45,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-02-15 20:46:45,501 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand has 26 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-02-15 20:46:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:55,179 INFO L93 Difference]: Finished difference Result 337 states and 468 transitions. [2023-02-15 20:46:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-15 20:46:55,180 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 60 [2023-02-15 20:46:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:55,181 INFO L225 Difference]: With dead ends: 337 [2023-02-15 20:46:55,181 INFO L226 Difference]: Without dead ends: 249 [2023-02-15 20:46:55,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=497, Invalid=2365, Unknown=0, NotChecked=0, Total=2862 [2023-02-15 20:46:55,184 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 162 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 1651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:55,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 257 Invalid, 1651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-02-15 20:46:55,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2023-02-15 20:46:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 206. [2023-02-15 20:46:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 135 states have (on average 1.1851851851851851) internal successors, (160), 138 states have internal predecessors, (160), 57 states have call successors, (57), 13 states have call predecessors, (57), 13 states have return successors, (56), 54 states have call predecessors, (56), 56 states have call successors, (56) [2023-02-15 20:46:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 273 transitions. [2023-02-15 20:46:55,259 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 273 transitions. Word has length 60 [2023-02-15 20:46:55,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:55,260 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 273 transitions. [2023-02-15 20:46:55,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-02-15 20:46:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 273 transitions. [2023-02-15 20:46:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-02-15 20:46:55,261 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:55,261 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:55,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:55,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 20:46:55,466 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:55,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1439093215, now seen corresponding path program 1 times [2023-02-15 20:46:55,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:55,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675815705] [2023-02-15 20:46:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:55,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:55,474 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:55,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324219193] [2023-02-15 20:46:55,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:55,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:55,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:55,475 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:55,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 20:46:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:46:55,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 20:46:55,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:46:55,614 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-02-15 20:46:55,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:46:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-02-15 20:46:55,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:46:55,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675815705] [2023-02-15 20:46:55,723 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:46:55,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324219193] [2023-02-15 20:46:55,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324219193] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:46:55,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:46:55,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2023-02-15 20:46:55,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640017707] [2023-02-15 20:46:55,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:46:55,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 20:46:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:46:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 20:46:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-02-15 20:46:55,725 INFO L87 Difference]: Start difference. First operand 206 states and 273 transitions. Second operand has 16 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-02-15 20:46:56,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:46:56,039 INFO L93 Difference]: Finished difference Result 296 states and 391 transitions. [2023-02-15 20:46:56,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 20:46:56,039 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 68 [2023-02-15 20:46:56,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:46:56,043 INFO L225 Difference]: With dead ends: 296 [2023-02-15 20:46:56,043 INFO L226 Difference]: Without dead ends: 198 [2023-02-15 20:46:56,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-02-15 20:46:56,044 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 74 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 20:46:56,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 216 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 20:46:56,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2023-02-15 20:46:56,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 183. [2023-02-15 20:46:56,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 116 states have internal predecessors, (132), 55 states have call successors, (55), 13 states have call predecessors, (55), 13 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2023-02-15 20:46:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 241 transitions. [2023-02-15 20:46:56,107 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 241 transitions. Word has length 68 [2023-02-15 20:46:56,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:46:56,107 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 241 transitions. [2023-02-15 20:46:56,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.875) internal successors, (46), 14 states have internal predecessors, (46), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2023-02-15 20:46:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 241 transitions. [2023-02-15 20:46:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-15 20:46:56,108 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:46:56,108 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:56,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:56,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-15 20:46:56,313 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:46:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:46:56,313 INFO L85 PathProgramCache]: Analyzing trace with hash 160585404, now seen corresponding path program 1 times [2023-02-15 20:46:56,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:46:56,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825360975] [2023-02-15 20:46:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:56,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:46:56,331 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:46:56,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2107043759] [2023-02-15 20:46:56,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:46:56,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:46:56,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:46:56,337 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 20:46:56,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 20:46:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-02-15 20:46:56,393 WARN L124 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2023-02-15 20:46:56,393 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-02-15 20:46:56,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 20:46:56,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 20:46:56,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-15 20:46:56,601 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:46:56,603 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 20:46:56,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 08:46:56 BoogieIcfgContainer [2023-02-15 20:46:56,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 20:46:56,615 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 20:46:56,615 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 20:46:56,615 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 20:46:56,616 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:46:32" (3/4) ... [2023-02-15 20:46:56,617 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 20:46:56,618 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 20:46:56,619 INFO L158 Benchmark]: Toolchain (without parser) took 24423.09ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 82.4MB in the beginning and 53.7MB in the end (delta: 28.7MB). Peak memory consumption was 65.2MB. Max. memory is 16.1GB. [2023-02-15 20:46:56,619 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory was 71.9MB in the beginning and 71.8MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:46:56,619 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.54ms. Allocated memory is still 130.0MB. Free memory was 82.4MB in the beginning and 97.3MB in the end (delta: -14.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-15 20:46:56,619 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.55ms. Allocated memory is still 130.0MB. Free memory was 97.3MB in the beginning and 96.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:46:56,620 INFO L158 Benchmark]: Boogie Preprocessor took 34.19ms. Allocated memory is still 130.0MB. Free memory was 96.0MB in the beginning and 94.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:46:56,620 INFO L158 Benchmark]: RCFGBuilder took 241.54ms. Allocated memory is still 130.0MB. Free memory was 94.6MB in the beginning and 83.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:46:56,620 INFO L158 Benchmark]: TraceAbstraction took 23879.28ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 82.0MB in the beginning and 53.7MB in the end (delta: 28.3MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. [2023-02-15 20:46:56,620 INFO L158 Benchmark]: Witness Printer took 2.66ms. Allocated memory is still 165.7MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:46:56,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 102.8MB. Free memory was 71.9MB in the beginning and 71.8MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 234.54ms. Allocated memory is still 130.0MB. Free memory was 82.4MB in the beginning and 97.3MB in the end (delta: -14.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.55ms. Allocated memory is still 130.0MB. Free memory was 97.3MB in the beginning and 96.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.19ms. Allocated memory is still 130.0MB. Free memory was 96.0MB in the beginning and 94.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 241.54ms. Allocated memory is still 130.0MB. Free memory was 94.6MB in the beginning and 83.2MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 23879.28ms. Allocated memory was 130.0MB in the beginning and 165.7MB in the end (delta: 35.7MB). Free memory was 82.0MB in the beginning and 53.7MB in the end (delta: 28.3MB). Peak memory consumption was 66.2MB. Max. memory is 16.1GB. * Witness Printer took 2.66ms. Allocated memory is still 165.7MB. Free memory is still 53.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int x, y; [L20] long long a, b, p, q, r, s; [L21] x = __VERIFIER_nondet_int() [L22] CALL assume_abort_if_not(x>=0 && x<=2) [L8] COND FALSE !(!cond) [L22] RET assume_abort_if_not(x>=0 && x<=2) [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(y>=0 && y<=2) [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(y>=0 && y<=2) [L25] CALL assume_abort_if_not(x >= 1) [L8] COND FALSE !(!cond) [L25] RET assume_abort_if_not(x >= 1) [L26] CALL assume_abort_if_not(y >= 1) [L8] COND FALSE !(!cond) [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L50] CALL __VERIFIER_assert(a == y * r + x * p) [L11] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(a == y * r + x * p) [L51] CALL __VERIFIER_assert(b == x * q + y * s) [L11] COND FALSE !(!(cond)) [L51] RET __VERIFIER_assert(b == x * q + y * s) [L52] CALL __VERIFIER_assert(a == k * b + c) [L11] COND FALSE !(!(cond)) [L52] RET __VERIFIER_assert(a == k * b + c) [L53] CALL __VERIFIER_assert(v == b * d) [L11] COND FALSE !(!(cond)) [L53] RET __VERIFIER_assert(v == b * d) [L55] COND FALSE !(!(c >= 2 * v)) [L57] d = 2 * d [L58] v = 2 * v [L49] COND TRUE 1 [L50] CALL __VERIFIER_assert(a == y * r + x * p) [L11] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(a == y * r + x * p) [L51] CALL __VERIFIER_assert(b == x * q + y * s) [L11] COND FALSE !(!(cond)) [L51] RET __VERIFIER_assert(b == x * q + y * s) [L52] CALL __VERIFIER_assert(a == k * b + c) [L11] COND FALSE !(!(cond)) [L52] RET __VERIFIER_assert(a == k * b + c) [L53] CALL __VERIFIER_assert(v == b * d) [L11] COND FALSE !(!(cond)) [L53] RET __VERIFIER_assert(v == b * d) [L55] COND TRUE !(c >= 2 * v) [L60] c = c - v [L61] k = k + d [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND TRUE !(b != 0) [L74] CALL __VERIFIER_assert(p*x - q*x + r*y - s*y == a) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.8s, OverallIterations: 13, TraceHistogramMax: 9, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 722 SdHoareTripleChecker+Valid, 9.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 685 mSDsluCounter, 1990 SdHoareTripleChecker+Invalid, 8.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1525 mSDsCounter, 576 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3710 IncrementalHoareTripleChecker+Invalid, 4286 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 576 mSolverCounterUnsat, 465 mSDtfsCounter, 3710 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 941 GetRequests, 716 SyntacticMatches, 10 SemanticMatches, 215 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1315 ImplicationChecksByTransitivity, 8.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=11, InterpolantAutomatonStates: 148, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 12 MinimizatonAttempts, 152 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 624 NumberOfCodeBlocks, 624 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 856 ConstructedInterpolants, 5 QuantifiedInterpolants, 3983 SizeOfPredicates, 80 NumberOfNonLiveVariables, 1505 ConjunctsInSsa, 276 ConjunctsInUnsatCore, 20 InterpolantComputations, 6 PerfectInterpolantSequences, 654/749 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 [2023-02-15 20:46:56,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:46:58,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:46:58,287 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:46:58,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:46:58,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:46:58,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:46:58,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:46:58,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:46:58,341 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:46:58,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:46:58,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:46:58,347 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:46:58,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:46:58,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:46:58,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:46:58,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:46:58,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:46:58,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:46:58,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:46:58,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:46:58,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:46:58,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:46:58,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:46:58,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:46:58,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:46:58,366 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:46:58,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:46:58,367 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:46:58,367 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:46:58,368 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:46:58,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:46:58,369 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:46:58,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:46:58,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:46:58,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:46:58,377 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:46:58,378 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:46:58,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:46:58,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:46:58,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:46:58,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:46:58,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-15 20:46:58,404 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:46:58,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:46:58,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:46:58,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:46:58,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:46:58,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:46:58,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:46:58,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:46:58,407 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:46:58,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:46:58,408 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:46:58,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:46:58,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:46:58,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:46:58,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:46:58,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:46:58,409 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 20:46:58,409 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 20:46:58,409 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 20:46:58,409 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:46:58,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:46:58,410 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:46:58,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:46:58,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:46:58,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:46:58,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:46:58,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:46:58,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:46:58,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:46:58,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:46:58,411 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 20:46:58,411 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 20:46:58,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:46:58,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:46:58,412 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:46:58,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:46:58,412 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 20:46:58,412 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:46:58,412 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bda512f5ab4e84c08e80fd02a1c07c8fba5ca60aa45d55edfde2cc268dd1288e [2023-02-15 20:46:58,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:46:58,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:46:58,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:46:58,670 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:46:58,671 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:46:58,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2023-02-15 20:46:59,675 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:46:59,811 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:46:59,811 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c [2023-02-15 20:46:59,831 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702e8c378/3593452098eb42c49fde65688fe3c283/FLAGe18b62c78 [2023-02-15 20:46:59,845 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702e8c378/3593452098eb42c49fde65688fe3c283 [2023-02-15 20:46:59,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:46:59,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:46:59,849 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:46:59,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:46:59,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:46:59,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:46:59" (1/1) ... [2023-02-15 20:46:59,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d40147 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:46:59, skipping insertion in model container [2023-02-15 20:46:59,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:46:59" (1/1) ... [2023-02-15 20:46:59,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:46:59,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:46:59,989 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2023-02-15 20:47:00,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:47:00,024 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:47:00,034 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound2.c[490,503] [2023-02-15 20:47:00,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:47:00,078 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:47:00,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00 WrapperNode [2023-02-15 20:47:00,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:47:00,081 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:47:00,081 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:47:00,081 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:47:00,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,112 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 78 [2023-02-15 20:47:00,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:47:00,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:47:00,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:47:00,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:47:00,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:47:00,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:47:00,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:47:00,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:47:00,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (1/1) ... [2023-02-15 20:47:00,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:47:00,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:47:00,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 20:47:00,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 20:47:00,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:47:00,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-15 20:47:00,220 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 20:47:00,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 20:47:00,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:47:00,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:47:00,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:47:00,221 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:47:00,271 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:47:00,272 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:47:00,569 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:47:00,573 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:47:00,573 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-15 20:47:00,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:47:00 BoogieIcfgContainer [2023-02-15 20:47:00,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:47:00,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:47:00,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:47:00,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:47:00,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:46:59" (1/3) ... [2023-02-15 20:47:00,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583f9cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:47:00, skipping insertion in model container [2023-02-15 20:47:00,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:47:00" (2/3) ... [2023-02-15 20:47:00,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583f9cfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:47:00, skipping insertion in model container [2023-02-15 20:47:00,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:47:00" (3/3) ... [2023-02-15 20:47:00,581 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound2.c [2023-02-15 20:47:00,592 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:47:00,592 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:47:00,620 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:47:00,624 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4d23aa76, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:47:00,624 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:47:00,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 20:47:00,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 20:47:00,631 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:47:00,631 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:47:00,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:47:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:47:00,634 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2023-02-15 20:47:00,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:47:00,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65369312] [2023-02-15 20:47:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:47:00,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:00,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:47:00,659 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:47:00,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 20:47:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:47:00,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 20:47:00,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:47:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:47:00,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:47:00,873 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 20:47:00,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65369312] [2023-02-15 20:47:00,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65369312] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:47:00,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:47:00,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 20:47:00,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322464350] [2023-02-15 20:47:00,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:47:00,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 20:47:00,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 20:47:00,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 20:47:00,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:47:00,906 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:47:00,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:47:00,932 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2023-02-15 20:47:00,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 20:47:00,933 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-02-15 20:47:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:47:00,938 INFO L225 Difference]: With dead ends: 67 [2023-02-15 20:47:00,938 INFO L226 Difference]: Without dead ends: 31 [2023-02-15 20:47:00,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:47:00,944 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:47:00,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:47:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-15 20:47:00,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-15 20:47:00,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 20:47:00,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-02-15 20:47:00,982 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2023-02-15 20:47:00,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:47:00,982 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-02-15 20:47:00,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:47:00,983 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-02-15 20:47:00,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-15 20:47:00,985 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:47:00,985 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:47:01,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-15 20:47:01,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:01,207 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:47:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:47:01,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2023-02-15 20:47:01,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:47:01,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976976698] [2023-02-15 20:47:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:47:01,208 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:01,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:47:01,211 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:47:01,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 20:47:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:47:01,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 20:47:01,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:47:01,462 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 20:47:01,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:47:01,622 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:47:01,623 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 20:47:01,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976976698] [2023-02-15 20:47:01,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976976698] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:47:01,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:47:01,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2023-02-15 20:47:01,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727897359] [2023-02-15 20:47:01,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:47:01,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 20:47:01,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 20:47:01,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 20:47:01,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-15 20:47:01,626 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:47:03,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:47:03,097 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-02-15 20:47:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:47:03,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2023-02-15 20:47:03,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:47:03,103 INFO L225 Difference]: With dead ends: 40 [2023-02-15 20:47:03,103 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 20:47:03,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-15 20:47:03,104 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-15 20:47:03,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 92 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-15 20:47:03,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 20:47:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-15 20:47:03,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 20:47:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-02-15 20:47:03,110 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2023-02-15 20:47:03,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:47:03,110 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-02-15 20:47:03,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:47:03,111 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-02-15 20:47:03,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 20:47:03,111 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:47:03,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:47:03,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 20:47:03,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:03,312 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:47:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:47:03,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2023-02-15 20:47:03,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:47:03,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21825744] [2023-02-15 20:47:03,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:47:03,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:03,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:47:03,315 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:47:03,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 20:47:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:47:03,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 20:47:03,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:47:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:47:03,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:47:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:47:08,813 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 20:47:08,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21825744] [2023-02-15 20:47:08,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21825744] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:47:08,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:47:08,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-02-15 20:47:08,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553978625] [2023-02-15 20:47:08,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:47:08,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:47:08,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 20:47:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:47:08,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-15 20:47:08,815 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:47:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:47:15,267 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-02-15 20:47:15,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:47:15,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2023-02-15 20:47:15,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:47:15,291 INFO L225 Difference]: With dead ends: 49 [2023-02-15 20:47:15,291 INFO L226 Difference]: Without dead ends: 47 [2023-02-15 20:47:15,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:47:15,292 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 10 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-02-15 20:47:15,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 133 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-02-15 20:47:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-15 20:47:15,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-15 20:47:15,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-15 20:47:15,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-02-15 20:47:15,305 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2023-02-15 20:47:15,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:47:15,306 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-02-15 20:47:15,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 20:47:15,306 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-02-15 20:47:15,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-15 20:47:15,307 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:47:15,307 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:47:15,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-15 20:47:15,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:15,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:47:15,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:47:15,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2023-02-15 20:47:15,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:47:15,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418974478] [2023-02-15 20:47:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:47:15,509 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:15,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:47:15,513 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:47:15,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 20:47:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:47:15,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 20:47:15,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:47:16,141 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-15 20:47:16,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:47:16,710 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:47:16,711 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 20:47:16,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418974478] [2023-02-15 20:47:16,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418974478] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:47:16,714 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:47:16,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-15 20:47:16,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937740623] [2023-02-15 20:47:16,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:47:16,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 20:47:16,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 20:47:16,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 20:47:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:47:16,719 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 20:47:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:47:24,190 INFO L93 Difference]: Finished difference Result 114 states and 162 transitions. [2023-02-15 20:47:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 20:47:24,197 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 35 [2023-02-15 20:47:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:47:24,198 INFO L225 Difference]: With dead ends: 114 [2023-02-15 20:47:24,198 INFO L226 Difference]: Without dead ends: 107 [2023-02-15 20:47:24,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2023-02-15 20:47:24,200 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 171 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2023-02-15 20:47:24,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 195 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2023-02-15 20:47:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-15 20:47:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 53. [2023-02-15 20:47:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 37 states have internal predecessors, (44), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-15 20:47:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2023-02-15 20:47:24,218 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 35 [2023-02-15 20:47:24,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:47:24,219 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2023-02-15 20:47:24,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 20:47:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2023-02-15 20:47:24,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 20:47:24,220 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:47:24,220 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:47:24,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-15 20:47:24,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:24,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:47:24,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:47:24,433 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2023-02-15 20:47:24,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:47:24,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971056588] [2023-02-15 20:47:24,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:47:24,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:24,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:47:24,437 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:47:24,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 20:47:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:47:24,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 20:47:24,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:47:25,363 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:47:25,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:47:31,119 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:47:31,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 20:47:31,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971056588] [2023-02-15 20:47:31,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971056588] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:47:31,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:47:31,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-02-15 20:47:31,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320125981] [2023-02-15 20:47:31,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:47:31,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:47:31,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 20:47:31,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:47:31,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-15 20:47:31,120 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 20:47:39,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:47:39,907 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2023-02-15 20:47:39,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:47:39,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-02-15 20:47:39,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:47:39,959 INFO L225 Difference]: With dead ends: 61 [2023-02-15 20:47:39,959 INFO L226 Difference]: Without dead ends: 59 [2023-02-15 20:47:39,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:47:39,960 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-02-15 20:47:39,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 128 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-02-15 20:47:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-15 20:47:39,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2023-02-15 20:47:39,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-15 20:47:39,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2023-02-15 20:47:39,978 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 38 [2023-02-15 20:47:39,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:47:39,980 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2023-02-15 20:47:39,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 20:47:39,980 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2023-02-15 20:47:39,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 20:47:39,983 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:47:39,983 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:47:39,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-15 20:47:40,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:40,193 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:47:40,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:47:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2023-02-15 20:47:40,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:47:40,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369279941] [2023-02-15 20:47:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:47:40,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:47:40,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:47:40,195 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:47:40,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-15 20:47:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:47:40,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-15 20:47:40,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:47:42,143 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:47:42,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:48:22,850 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:48:22,851 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 20:48:22,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369279941] [2023-02-15 20:48:22,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369279941] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:48:22,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:48:22,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10] total 24 [2023-02-15 20:48:22,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207549227] [2023-02-15 20:48:22,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:48:22,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 20:48:22,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 20:48:22,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 20:48:22,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-02-15 20:48:22,852 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 19 states have internal predecessors, (37), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 20:48:49,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-15 20:49:34,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-15 20:49:35,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-15 20:50:06,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:50:06,605 INFO L93 Difference]: Finished difference Result 131 states and 178 transitions. [2023-02-15 20:50:06,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 20:50:06,638 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 19 states have internal predecessors, (37), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 38 [2023-02-15 20:50:06,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:50:06,639 INFO L225 Difference]: With dead ends: 131 [2023-02-15 20:50:06,639 INFO L226 Difference]: Without dead ends: 107 [2023-02-15 20:50:06,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 80.1s TimeCoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2023-02-15 20:50:06,642 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 152 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 109 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 55.2s IncrementalHoareTripleChecker+Time [2023-02-15 20:50:06,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 289 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 614 Invalid, 1 Unknown, 0 Unchecked, 55.2s Time] [2023-02-15 20:50:06,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-15 20:50:06,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 80. [2023-02-15 20:50:06,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.2105263157894737) internal successors, (69), 58 states have internal predecessors, (69), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-15 20:50:06,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2023-02-15 20:50:06,669 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 38 [2023-02-15 20:50:06,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:50:06,670 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2023-02-15 20:50:06,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 19 states have internal predecessors, (37), 6 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-15 20:50:06,670 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2023-02-15 20:50:06,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 20:50:06,670 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:50:06,670 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:50:06,681 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-02-15 20:50:06,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:50:06,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:50:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:50:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2023-02-15 20:50:06,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:50:06,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619495966] [2023-02-15 20:50:06,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:50:06,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:50:06,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:50:06,884 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:50:06,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-15 20:50:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:50:07,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-15 20:50:07,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:50:08,118 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-15 20:50:08,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:50:13,045 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-15 20:50:13,045 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 20:50:13,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619495966] [2023-02-15 20:50:13,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619495966] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:50:13,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:50:13,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-02-15 20:50:13,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135820030] [2023-02-15 20:50:13,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:50:13,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:50:13,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 20:50:13,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:50:13,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:50:13,046 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:50:16,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-15 20:50:21,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-15 20:50:21,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:50:21,926 INFO L93 Difference]: Finished difference Result 107 states and 143 transitions. [2023-02-15 20:50:21,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:50:21,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2023-02-15 20:50:21,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:50:21,943 INFO L225 Difference]: With dead ends: 107 [2023-02-15 20:50:21,943 INFO L226 Difference]: Without dead ends: 105 [2023-02-15 20:50:21,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-02-15 20:50:21,944 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2023-02-15 20:50:21,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 124 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-02-15 20:50:21,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-02-15 20:50:21,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 102. [2023-02-15 20:50:21,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.2272727272727273) internal successors, (81), 67 states have internal predecessors, (81), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-02-15 20:50:21,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 138 transitions. [2023-02-15 20:50:21,976 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 138 transitions. Word has length 43 [2023-02-15 20:50:21,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:50:21,978 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 138 transitions. [2023-02-15 20:50:21,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 20:50:21,978 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 138 transitions. [2023-02-15 20:50:21,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 20:50:21,980 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:50:21,980 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:50:21,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-15 20:50:22,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:50:22,192 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:50:22,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:50:22,193 INFO L85 PathProgramCache]: Analyzing trace with hash -2141198011, now seen corresponding path program 1 times [2023-02-15 20:50:22,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 20:50:22,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406875947] [2023-02-15 20:50:22,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:50:22,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 20:50:22,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 20:50:22,199 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 20:50:22,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-15 20:50:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:50:22,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 20:50:22,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:50:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 20:50:23,920 INFO L328 TraceCheckSpWp]: Computing backward predicates...