./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.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/hard2_valuebound10.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 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 21:07:49,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 21:07:49,425 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 21:07:49,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 21:07:49,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 21:07:49,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 21:07:49,459 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 21:07:49,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 21:07:49,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 21:07:49,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 21:07:49,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 21:07:49,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 21:07:49,468 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 21:07:49,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 21:07:49,470 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 21:07:49,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 21:07:49,473 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 21:07:49,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 21:07:49,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 21:07:49,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 21:07:49,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 21:07:49,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 21:07:49,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 21:07:49,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 21:07:49,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 21:07:49,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 21:07:49,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 21:07:49,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 21:07:49,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 21:07:49,493 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 21:07:49,493 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 21:07:49,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 21:07:49,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 21:07:49,496 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 21:07:49,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 21:07:49,496 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 21:07:49,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 21:07:49,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 21:07:49,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 21:07:49,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 21:07:49,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 21:07:49,500 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 21:07:49,521 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 21:07:49,521 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 21:07:49,522 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 21:07:49,522 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 21:07:49,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 21:07:49,523 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 21:07:49,523 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 21:07:49,523 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 21:07:49,523 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 21:07:49,523 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 21:07:49,524 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 21:07:49,524 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 21:07:49,524 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 21:07:49,524 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 21:07:49,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 21:07:49,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 21:07:49,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 21:07:49,525 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 21:07:49,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 21:07:49,525 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 21:07:49,525 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 21:07:49,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 21:07:49,526 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 21:07:49,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 21:07:49,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:07:49,526 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 21:07:49,526 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 21:07:49,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 21:07:49,527 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 21:07:49,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 21:07:49,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 21:07:49,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 21:07:49,527 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 21:07:49,527 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 21:07:49,527 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 21:07:49,528 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 174cfd8cb6426614b32355f584844d4fc6265ba8fd3c3cda6c788ade64de4fc0 [2023-02-15 21:07:49,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 21:07:49,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 21:07:49,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 21:07:49,728 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 21:07:49,729 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 21:07:49,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2023-02-15 21:07:50,786 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 21:07:50,902 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 21:07:50,903 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound10.c [2023-02-15 21:07:50,906 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d09799a/f9a6317d15a847e19cf4137228f737a2/FLAG45a61c9dc [2023-02-15 21:07:50,915 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01d09799a/f9a6317d15a847e19cf4137228f737a2 [2023-02-15 21:07:50,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 21:07:50,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 21:07:50,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 21:07:50,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 21:07:50,926 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 21:07:50,926 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:07:50" (1/1) ... [2023-02-15 21:07:50,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a055fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:50, skipping insertion in model container [2023-02-15 21:07:50,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:07:50" (1/1) ... [2023-02-15 21:07:50,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 21:07:50,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 21:07:51,036 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/hard2_valuebound10.c[526,539] [2023-02-15 21:07:51,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:07:51,063 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 21:07:51,073 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/hard2_valuebound10.c[526,539] [2023-02-15 21:07:51,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:07:51,087 INFO L208 MainTranslator]: Completed translation [2023-02-15 21:07:51,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51 WrapperNode [2023-02-15 21:07:51,087 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 21:07:51,088 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 21:07:51,088 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 21:07:51,088 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 21:07:51,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,113 INFO L138 Inliner]: procedures = 14, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-02-15 21:07:51,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 21:07:51,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 21:07:51,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 21:07:51,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 21:07:51,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,121 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,129 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,142 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 21:07:51,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 21:07:51,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 21:07:51,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 21:07:51,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (1/1) ... [2023-02-15 21:07:51,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:07:51,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:07:51,168 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 21:07:51,186 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 21:07:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 21:07:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 21:07:51,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 21:07:51,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 21:07:51,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 21:07:51,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 21:07:51,238 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 21:07:51,240 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 21:07:51,331 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 21:07:51,334 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 21:07:51,334 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 21:07:51,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:07:51 BoogieIcfgContainer [2023-02-15 21:07:51,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 21:07:51,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 21:07:51,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 21:07:51,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 21:07:51,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 09:07:50" (1/3) ... [2023-02-15 21:07:51,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67932d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:07:51, skipping insertion in model container [2023-02-15 21:07:51,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:07:51" (2/3) ... [2023-02-15 21:07:51,340 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67932d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:07:51, skipping insertion in model container [2023-02-15 21:07:51,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:07:51" (3/3) ... [2023-02-15 21:07:51,341 INFO L112 eAbstractionObserver]: Analyzing ICFG hard2_valuebound10.c [2023-02-15 21:07:51,356 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 21:07:51,356 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 21:07:51,385 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 21:07:51,389 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;@4bf3958f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 21:07:51,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 21:07:51,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 21:07:51,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 21:07:51,397 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:07:51,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:07:51,398 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:07:51,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:07:51,401 INFO L85 PathProgramCache]: Analyzing trace with hash -586848446, now seen corresponding path program 1 times [2023-02-15 21:07:51,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:07:51,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312152220] [2023-02-15 21:07:51,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:51,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:07:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:07:51,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:07:51,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:07:51,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312152220] [2023-02-15 21:07:51,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312152220] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:07:51,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:07:51,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 21:07:51,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810589203] [2023-02-15 21:07:51,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:07:51,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 21:07:51,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:07:51,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 21:07:51,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 21:07:51,540 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:07:51,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:07:51,559 INFO L93 Difference]: Finished difference Result 49 states and 83 transitions. [2023-02-15 21:07:51,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 21:07:51,560 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 21:07:51,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:07:51,564 INFO L225 Difference]: With dead ends: 49 [2023-02-15 21:07:51,565 INFO L226 Difference]: Without dead ends: 22 [2023-02-15 21:07:51,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 21:07:51,570 INFO L413 NwaCegarLoop]: 34 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, 34 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 21:07:51,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:07:51,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-15 21:07:51,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-15 21:07:51,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 21:07:51,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 30 transitions. [2023-02-15 21:07:51,596 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 30 transitions. Word has length 9 [2023-02-15 21:07:51,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:07:51,598 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 30 transitions. [2023-02-15 21:07:51,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:07:51,598 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 30 transitions. [2023-02-15 21:07:51,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 21:07:51,599 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:07:51,599 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:07:51,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 21:07:51,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:07:51,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:07:51,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1188158916, now seen corresponding path program 1 times [2023-02-15 21:07:51,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:07:51,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77353121] [2023-02-15 21:07:51,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:51,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:07:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:07:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:07:51,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:07:51,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77353121] [2023-02-15 21:07:51,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77353121] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:07:51,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:07:51,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 21:07:51,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81842747] [2023-02-15 21:07:51,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:07:51,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:07:51,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:07:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:07:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:07:51,781 INFO L87 Difference]: Start difference. First operand 22 states and 30 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:07:51,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:07:51,821 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2023-02-15 21:07:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 21:07:51,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-15 21:07:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:07:51,822 INFO L225 Difference]: With dead ends: 35 [2023-02-15 21:07:51,822 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 21:07:51,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 21:07:51,823 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:07:51,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 92 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:07:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 21:07:51,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2023-02-15 21:07:51,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 21:07:51,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2023-02-15 21:07:51,830 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 9 [2023-02-15 21:07:51,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:07:51,830 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2023-02-15 21:07:51,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 21:07:51,830 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2023-02-15 21:07:51,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-15 21:07:51,831 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:07:51,831 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:07:51,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 21:07:51,831 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:07:51,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:07:51,832 INFO L85 PathProgramCache]: Analyzing trace with hash -697944935, now seen corresponding path program 1 times [2023-02-15 21:07:51,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:07:51,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711268090] [2023-02-15 21:07:51,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:51,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:07:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:07:51,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-15 21:07:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:07:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 21:07:51,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:07:51,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711268090] [2023-02-15 21:07:51,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711268090] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:07:51,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:07:51,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 21:07:51,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957999026] [2023-02-15 21:07:51,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:07:51,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:07:51,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:07:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:07:51,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:07:51,910 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 21:07:51,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:07:51,976 INFO L93 Difference]: Finished difference Result 39 states and 50 transitions. [2023-02-15 21:07:51,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 21:07:51,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-02-15 21:07:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:07:51,977 INFO L225 Difference]: With dead ends: 39 [2023-02-15 21:07:51,977 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 21:07:51,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 21:07:51,978 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 10 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:07:51,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 88 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:07:51,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 21:07:51,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2023-02-15 21:07:51,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 21:07:51,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2023-02-15 21:07:51,987 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 14 [2023-02-15 21:07:51,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:07:51,988 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2023-02-15 21:07:51,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 21:07:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2023-02-15 21:07:51,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 21:07:51,989 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:07:51,989 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:07:51,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 21:07:51,990 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:07:51,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:07:51,991 INFO L85 PathProgramCache]: Analyzing trace with hash 262992548, now seen corresponding path program 1 times [2023-02-15 21:07:51,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:07:51,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365926354] [2023-02-15 21:07:51,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:51,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:07:52,005 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:07:52,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300324033] [2023-02-15 21:07:52,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:52,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:52,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:07:52,013 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 21:07:52,014 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 21:07:52,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:07:52,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 21:07:52,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:07:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:07:52,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:07:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:07:52,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:07:52,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365926354] [2023-02-15 21:07:52,343 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:07:52,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300324033] [2023-02-15 21:07:52,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300324033] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:07:52,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:07:52,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2023-02-15 21:07:52,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816807641] [2023-02-15 21:07:52,346 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:07:52,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 21:07:52,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:07:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 21:07:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-15 21:07:52,348 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 21:07:52,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:07:52,513 INFO L93 Difference]: Finished difference Result 65 states and 84 transitions. [2023-02-15 21:07:52,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 21:07:52,514 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 19 [2023-02-15 21:07:52,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:07:52,517 INFO L225 Difference]: With dead ends: 65 [2023-02-15 21:07:52,518 INFO L226 Difference]: Without dead ends: 51 [2023-02-15 21:07:52,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-15 21:07:52,521 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:07:52,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 48 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:07:52,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-15 21:07:52,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-15 21:07:52,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 33 states have internal predecessors, (35), 15 states have call successors, (15), 5 states have call predecessors, (15), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-15 21:07:52,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2023-02-15 21:07:52,536 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 19 [2023-02-15 21:07:52,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:07:52,537 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2023-02-15 21:07:52,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 21:07:52,537 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2023-02-15 21:07:52,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 21:07:52,538 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:07:52,538 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:07:52,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 21:07:52,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:52,742 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:07:52,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:07:52,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1807142342, now seen corresponding path program 1 times [2023-02-15 21:07:52,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:07:52,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847371761] [2023-02-15 21:07:52,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:52,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:07:52,754 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:07:52,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526693980] [2023-02-15 21:07:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:52,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:52,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:07:52,789 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 21:07:52,796 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 21:07:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:07:52,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 21:07:52,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:07:52,964 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 21:07:52,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:07:53,083 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 21:07:53,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:07:53,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847371761] [2023-02-15 21:07:53,084 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:07:53,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526693980] [2023-02-15 21:07:53,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526693980] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:07:53,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:07:53,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2023-02-15 21:07:53,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240614878] [2023-02-15 21:07:53,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:07:53,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 21:07:53,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:07:53,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 21:07:53,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-15 21:07:53,091 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-15 21:07:53,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:07:53,200 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2023-02-15 21:07:53,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 21:07:53,200 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 26 [2023-02-15 21:07:53,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:07:53,202 INFO L225 Difference]: With dead ends: 66 [2023-02-15 21:07:53,202 INFO L226 Difference]: Without dead ends: 59 [2023-02-15 21:07:53,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-02-15 21:07:53,203 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:07:53,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 67 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:07:53,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-15 21:07:53,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2023-02-15 21:07:53,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.1714285714285715) internal successors, (41), 39 states have internal predecessors, (41), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-02-15 21:07:53,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2023-02-15 21:07:53,230 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 26 [2023-02-15 21:07:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:07:53,230 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2023-02-15 21:07:53,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-15 21:07:53,230 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2023-02-15 21:07:53,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 21:07:53,231 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:07:53,231 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:07:53,238 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 21:07:53,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:53,436 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:07:53,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:07:53,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1034157389, now seen corresponding path program 1 times [2023-02-15 21:07:53,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:07:53,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456363015] [2023-02-15 21:07:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:53,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:07:53,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:07:53,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440705230] [2023-02-15 21:07:53,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:53,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:53,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:07:53,456 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 21:07:53,478 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 21:07:53,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:07:53,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 21:07:53,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:07:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-15 21:07:53,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:07:54,432 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 15 proven. 29 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-15 21:07:54,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:07:54,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456363015] [2023-02-15 21:07:54,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:07:54,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440705230] [2023-02-15 21:07:54,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440705230] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:07:54,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:07:54,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-02-15 21:07:54,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522038393] [2023-02-15 21:07:54,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:07:54,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 21:07:54,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:07:54,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 21:07:54,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2023-02-15 21:07:54,435 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2023-02-15 21:07:56,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:07:56,893 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2023-02-15 21:07:56,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 21:07:56,894 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 56 [2023-02-15 21:07:56,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:07:56,895 INFO L225 Difference]: With dead ends: 142 [2023-02-15 21:07:56,895 INFO L226 Difference]: Without dead ends: 111 [2023-02-15 21:07:56,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-02-15 21:07:56,896 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 46 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 21:07:56,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 116 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 21:07:56,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-15 21:07:56,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2023-02-15 21:07:56,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 64 states have (on average 1.203125) internal successors, (77), 71 states have internal predecessors, (77), 31 states have call successors, (31), 10 states have call predecessors, (31), 10 states have return successors, (30), 24 states have call predecessors, (30), 30 states have call successors, (30) [2023-02-15 21:07:56,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 138 transitions. [2023-02-15 21:07:56,935 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 138 transitions. Word has length 56 [2023-02-15 21:07:56,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:07:56,944 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 138 transitions. [2023-02-15 21:07:56,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2666666666666666) internal successors, (34), 14 states have internal predecessors, (34), 7 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2023-02-15 21:07:56,945 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 138 transitions. [2023-02-15 21:07:56,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-02-15 21:07:56,947 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:07:56,948 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:07:56,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 21:07:57,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:57,153 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:07:57,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:07:57,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1199454569, now seen corresponding path program 1 times [2023-02-15 21:07:57,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:07:57,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245381360] [2023-02-15 21:07:57,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:57,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:07:57,168 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:07:57,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556630287] [2023-02-15 21:07:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:57,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:57,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:07:57,190 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 21:07:57,191 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 21:07:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:07:57,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-15 21:07:57,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:07:57,412 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-15 21:07:57,412 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:07:57,744 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 19 proven. 37 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-15 21:07:57,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:07:57,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245381360] [2023-02-15 21:07:57,744 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:07:57,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556630287] [2023-02-15 21:07:57,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556630287] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:07:57,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:07:57,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2023-02-15 21:07:57,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278153389] [2023-02-15 21:07:57,745 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:07:57,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 21:07:57,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:07:57,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 21:07:57,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-02-15 21:07:57,747 INFO L87 Difference]: Start difference. First operand 106 states and 138 transitions. Second operand has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2023-02-15 21:07:58,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:07:58,645 INFO L93 Difference]: Finished difference Result 161 states and 210 transitions. [2023-02-15 21:07:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-15 21:07:58,646 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) Word has length 67 [2023-02-15 21:07:58,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:07:58,647 INFO L225 Difference]: With dead ends: 161 [2023-02-15 21:07:58,647 INFO L226 Difference]: Without dead ends: 123 [2023-02-15 21:07:58,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2023-02-15 21:07:58,648 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 24 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 21:07:58,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 103 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 21:07:58,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-02-15 21:07:58,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2023-02-15 21:07:58,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 27 states have call successors, (27), 11 states have call predecessors, (27), 11 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2023-02-15 21:07:58,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 125 transitions. [2023-02-15 21:07:58,669 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 125 transitions. Word has length 67 [2023-02-15 21:07:58,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:07:58,669 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 125 transitions. [2023-02-15 21:07:58,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 15 states have internal predecessors, (36), 8 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 6 states have call successors, (20) [2023-02-15 21:07:58,669 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 125 transitions. [2023-02-15 21:07:58,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-02-15 21:07:58,670 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:07:58,670 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 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] [2023-02-15 21:07:58,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 21:07:58,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:58,875 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:07:58,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:07:58,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1728532070, now seen corresponding path program 1 times [2023-02-15 21:07:58,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:07:58,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3723704] [2023-02-15 21:07:58,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:58,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:07:58,882 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:07:58,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575982723] [2023-02-15 21:07:58,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:58,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:58,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:07:58,883 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 21:07:58,907 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 21:07:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:07:58,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-15 21:07:58,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:07:59,064 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-15 21:07:59,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:07:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2023-02-15 21:07:59,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:07:59,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3723704] [2023-02-15 21:07:59,297 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:07:59,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575982723] [2023-02-15 21:07:59,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575982723] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:07:59,297 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:07:59,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-15 21:07:59,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882728904] [2023-02-15 21:07:59,298 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:07:59,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 21:07:59,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:07:59,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 21:07:59,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-02-15 21:07:59,299 INFO L87 Difference]: Start difference. First operand 101 states and 125 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-15 21:07:59,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:07:59,473 INFO L93 Difference]: Finished difference Result 120 states and 144 transitions. [2023-02-15 21:07:59,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 21:07:59,473 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 72 [2023-02-15 21:07:59,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:07:59,474 INFO L225 Difference]: With dead ends: 120 [2023-02-15 21:07:59,474 INFO L226 Difference]: Without dead ends: 93 [2023-02-15 21:07:59,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-02-15 21:07:59,475 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 10 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:07:59,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 187 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:07:59,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-15 21:07:59,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-02-15 21:07:59,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.1206896551724137) internal successors, (65), 61 states have internal predecessors, (65), 23 states have call successors, (23), 11 states have call predecessors, (23), 11 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-15 21:07:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 110 transitions. [2023-02-15 21:07:59,491 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 110 transitions. Word has length 72 [2023-02-15 21:07:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:07:59,491 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 110 transitions. [2023-02-15 21:07:59,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2023-02-15 21:07:59,492 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 110 transitions. [2023-02-15 21:07:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-15 21:07:59,493 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:07:59,493 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:07:59,520 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 21:07:59,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:59,697 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:07:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:07:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1412721000, now seen corresponding path program 1 times [2023-02-15 21:07:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:07:59,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564614193] [2023-02-15 21:07:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:59,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:07:59,718 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:07:59,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51039486] [2023-02-15 21:07:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:07:59,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:07:59,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:07:59,719 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 21:07:59,753 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 21:07:59,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:07:59,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 21:07:59,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:07:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2023-02-15 21:07:59,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:07:59,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:07:59,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564614193] [2023-02-15 21:07:59,900 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:07:59,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51039486] [2023-02-15 21:07:59,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51039486] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:07:59,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:07:59,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 21:07:59,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710894631] [2023-02-15 21:07:59,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:07:59,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 21:07:59,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:07:59,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 21:07:59,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 21:07:59,902 INFO L87 Difference]: Start difference. First operand 93 states and 110 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-02-15 21:07:59,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:07:59,974 INFO L93 Difference]: Finished difference Result 125 states and 151 transitions. [2023-02-15 21:07:59,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 21:07:59,975 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2023-02-15 21:07:59,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:07:59,975 INFO L225 Difference]: With dead ends: 125 [2023-02-15 21:07:59,976 INFO L226 Difference]: Without dead ends: 88 [2023-02-15 21:07:59,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-15 21:07:59,976 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:07:59,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 101 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:07:59,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-15 21:08:00,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2023-02-15 21:08:00,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 18 states have call successors, (18), 10 states have call predecessors, (18), 10 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2023-02-15 21:08:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2023-02-15 21:08:00,008 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 86 [2023-02-15 21:08:00,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:08:00,008 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2023-02-15 21:08:00,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 4 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2023-02-15 21:08:00,008 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2023-02-15 21:08:00,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-15 21:08:00,009 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:08:00,009 INFO L195 NwaCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:08:00,016 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 21:08:00,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:08:00,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:08:00,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:08:00,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1193302554, now seen corresponding path program 2 times [2023-02-15 21:08:00,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:08:00,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083543966] [2023-02-15 21:08:00,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:08:00,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:08:00,225 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:08:00,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327383438] [2023-02-15 21:08:00,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:08:00,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:08:00,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:08:00,231 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 21:08:00,233 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 21:08:00,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:08:00,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:08:00,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-15 21:08:00,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:08:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-15 21:08:00,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:08:23,726 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 28 proven. 58 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-15 21:08:23,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:08:23,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083543966] [2023-02-15 21:08:23,727 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:08:23,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327383438] [2023-02-15 21:08:23,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327383438] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:08:23,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:08:23,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-02-15 21:08:23,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771013480] [2023-02-15 21:08:23,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:08:23,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 21:08:23,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:08:23,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 21:08:23,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2023-02-15 21:08:23,732 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand has 25 states, 25 states have (on average 1.76) internal successors, (44), 23 states have internal predecessors, (44), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) [2023-02-15 21:08:38,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:08:38,337 INFO L93 Difference]: Finished difference Result 153 states and 186 transitions. [2023-02-15 21:08:38,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-15 21:08:38,338 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 23 states have internal predecessors, (44), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) Word has length 86 [2023-02-15 21:08:38,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:08:38,338 INFO L225 Difference]: With dead ends: 153 [2023-02-15 21:08:38,338 INFO L226 Difference]: Without dead ends: 134 [2023-02-15 21:08:38,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=241, Invalid=1019, Unknown=0, NotChecked=0, Total=1260 [2023-02-15 21:08:38,341 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 65 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-15 21:08:38,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 156 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-15 21:08:38,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-02-15 21:08:38,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2023-02-15 21:08:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 79 states have (on average 1.1012658227848102) internal successors, (87), 82 states have internal predecessors, (87), 30 states have call successors, (30), 15 states have call predecessors, (30), 15 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-02-15 21:08:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2023-02-15 21:08:38,370 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 86 [2023-02-15 21:08:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:08:38,371 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2023-02-15 21:08:38,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.76) internal successors, (44), 23 states have internal predecessors, (44), 13 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 11 states have call predecessors, (26), 11 states have call successors, (26) [2023-02-15 21:08:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2023-02-15 21:08:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2023-02-15 21:08:38,376 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:08:38,376 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:08:38,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-15 21:08:38,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:08:38,582 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:08:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:08:38,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1373298297, now seen corresponding path program 2 times [2023-02-15 21:08:38,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:08:38,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294472528] [2023-02-15 21:08:38,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:08:38,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:08:38,594 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:08:38,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003771241] [2023-02-15 21:08:38,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:08:38,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:08:38,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:08:38,601 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 21:08:38,608 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 21:08:38,650 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:08:38,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:08:38,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-15 21:08:38,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:08:38,887 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-02-15 21:08:38,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:08:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-02-15 21:08:56,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:08:56,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294472528] [2023-02-15 21:08:56,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:08:56,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003771241] [2023-02-15 21:08:56,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003771241] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:08:56,817 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:08:56,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2023-02-15 21:08:56,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865606553] [2023-02-15 21:08:56,817 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:08:56,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 21:08:56,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:08:56,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 21:08:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2023-02-15 21:08:56,818 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 21 states have internal predecessors, (44), 12 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) [2023-02-15 21:09:14,557 WARN L233 SmtUtils]: Spent 17.41s on a formula simplification. DAG size of input: 159 DAG size of output: 93 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 21:09:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:09:17,913 INFO L93 Difference]: Finished difference Result 159 states and 184 transitions. [2023-02-15 21:09:17,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-15 21:09:17,914 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 21 states have internal predecessors, (44), 12 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) Word has length 91 [2023-02-15 21:09:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:09:17,915 INFO L225 Difference]: With dead ends: 159 [2023-02-15 21:09:17,915 INFO L226 Difference]: Without dead ends: 135 [2023-02-15 21:09:17,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=201, Invalid=669, Unknown=0, NotChecked=0, Total=870 [2023-02-15 21:09:17,916 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 34 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-15 21:09:17,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 164 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-15 21:09:17,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-02-15 21:09:17,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133. [2023-02-15 21:09:17,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 84 states have (on average 1.0833333333333333) internal successors, (91), 89 states have internal predecessors, (91), 31 states have call successors, (31), 17 states have call predecessors, (31), 17 states have return successors, (29), 26 states have call predecessors, (29), 29 states have call successors, (29) [2023-02-15 21:09:17,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 151 transitions. [2023-02-15 21:09:17,946 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 151 transitions. Word has length 91 [2023-02-15 21:09:17,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:09:17,947 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 151 transitions. [2023-02-15 21:09:17,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.8333333333333333) internal successors, (44), 21 states have internal predecessors, (44), 12 states have call successors, (30), 3 states have call predecessors, (30), 2 states have return successors, (28), 10 states have call predecessors, (28), 12 states have call successors, (28) [2023-02-15 21:09:17,947 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 151 transitions. [2023-02-15 21:09:17,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-15 21:09:17,948 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:09:17,948 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:09:17,963 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 21:09:18,163 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,SelfDestructingSolverStorable10 [2023-02-15 21:09:18,163 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:09:18,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:09:18,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1231859808, now seen corresponding path program 1 times [2023-02-15 21:09:18,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:09:18,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361163958] [2023-02-15 21:09:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:09:18,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:09:18,170 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:09:18,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1131245669] [2023-02-15 21:09:18,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:09:18,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:09:18,183 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:09:18,183 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 21:09:18,185 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 21:09:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:09:18,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-15 21:09:18,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:09:18,603 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 29 proven. 71 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-02-15 21:09:18,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:09:45,548 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 29 proven. 71 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-02-15 21:09:45,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:09:45,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361163958] [2023-02-15 21:09:45,548 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:09:45,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131245669] [2023-02-15 21:09:45,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131245669] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:09:45,549 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:09:45,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 25 [2023-02-15 21:09:45,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086052070] [2023-02-15 21:09:45,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:09:45,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-15 21:09:45,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:09:45,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-15 21:09:45,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-02-15 21:09:45,550 INFO L87 Difference]: Start difference. First operand 133 states and 151 transitions. Second operand has 25 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 13 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) [2023-02-15 21:10:07,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:10:07,704 INFO L93 Difference]: Finished difference Result 162 states and 190 transitions. [2023-02-15 21:10:07,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-15 21:10:07,705 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 13 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) Word has length 97 [2023-02-15 21:10:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:10:07,706 INFO L225 Difference]: With dead ends: 162 [2023-02-15 21:10:07,706 INFO L226 Difference]: Without dead ends: 155 [2023-02-15 21:10:07,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=311, Invalid=1171, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 21:10:07,706 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 59 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:10:07,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 159 Invalid, 1052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-02-15 21:10:07,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-15 21:10:07,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2023-02-15 21:10:07,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 90 states have (on average 1.0777777777777777) internal successors, (97), 94 states have internal predecessors, (97), 31 states have call successors, (31), 19 states have call predecessors, (31), 19 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2023-02-15 21:10:07,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 157 transitions. [2023-02-15 21:10:07,754 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 157 transitions. Word has length 97 [2023-02-15 21:10:07,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:10:07,754 INFO L495 AbstractCegarLoop]: Abstraction has 141 states and 157 transitions. [2023-02-15 21:10:07,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 2.0) internal successors, (46), 23 states have internal predecessors, (46), 13 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) [2023-02-15 21:10:07,755 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 157 transitions. [2023-02-15 21:10:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-02-15 21:10:07,755 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:10:07,756 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:10:07,762 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 21:10:07,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:10:07,961 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:10:07,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:10:07,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1474759586, now seen corresponding path program 2 times [2023-02-15 21:10:07,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:10:07,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566842625] [2023-02-15 21:10:07,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:10:07,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:10:07,971 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:10:07,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2047782673] [2023-02-15 21:10:07,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:10:07,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:10:07,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:10:07,973 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 21:10:07,975 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 21:10:08,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:10:08,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:10:08,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-15 21:10:08,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:10:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 38 proven. 62 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-02-15 21:10:08,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:10:17,958 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 38 proven. 62 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-02-15 21:10:17,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:10:17,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566842625] [2023-02-15 21:10:17,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:10:17,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2047782673] [2023-02-15 21:10:17,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2047782673] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:10:17,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:10:17,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2023-02-15 21:10:17,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639298837] [2023-02-15 21:10:17,960 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:10:17,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-15 21:10:17,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:10:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-15 21:10:17,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-02-15 21:10:17,974 INFO L87 Difference]: Start difference. First operand 141 states and 157 transitions. Second operand has 22 states, 20 states have (on average 2.3) internal successors, (46), 21 states have internal predecessors, (46), 13 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) [2023-02-15 21:10:22,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-15 21:10:25,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:10:25,598 INFO L93 Difference]: Finished difference Result 166 states and 193 transitions. [2023-02-15 21:10:25,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-15 21:10:25,599 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 21 states have internal predecessors, (46), 13 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) Word has length 97 [2023-02-15 21:10:25,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:10:25,600 INFO L225 Difference]: With dead ends: 166 [2023-02-15 21:10:25,600 INFO L226 Difference]: Without dead ends: 133 [2023-02-15 21:10:25,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 169 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=199, Invalid=671, Unknown=0, NotChecked=0, Total=870 [2023-02-15 21:10:25,600 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 38 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 83 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:10:25,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 135 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 683 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2023-02-15 21:10:25,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-02-15 21:10:25,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 113. [2023-02-15 21:10:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 71 states have (on average 1.0845070422535212) internal successors, (77), 75 states have internal predecessors, (77), 26 states have call successors, (26), 15 states have call predecessors, (26), 15 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-02-15 21:10:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2023-02-15 21:10:25,640 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 97 [2023-02-15 21:10:25,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:10:25,641 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2023-02-15 21:10:25,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 21 states have internal predecessors, (46), 13 states have call successors, (32), 3 states have call predecessors, (32), 2 states have return successors, (30), 10 states have call predecessors, (30), 11 states have call successors, (30) [2023-02-15 21:10:25,641 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2023-02-15 21:10:25,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-02-15 21:10:25,641 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:10:25,642 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:10:25,651 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 21:10:25,845 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,SelfDestructingSolverStorable12 [2023-02-15 21:10:25,846 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:10:25,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:10:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash -906483629, now seen corresponding path program 3 times [2023-02-15 21:10:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:10:25,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832313340] [2023-02-15 21:10:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:10:25,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:10:25,860 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:10:25,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815221849] [2023-02-15 21:10:25,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 21:10:25,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:10:25,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:10:25,861 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 21:10:25,889 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 21:10:25,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-15 21:10:25,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:10:25,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 51 conjunts are in the unsatisfiable core [2023-02-15 21:10:25,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:10:26,440 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 127 proven. 57 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2023-02-15 21:10:26,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:10:56,710 WARN L233 SmtUtils]: Spent 10.40s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 21:12:12,307 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse17 (div |c_ULTIMATE.start_main_~p~0#1| 2)) (.cse3 (= 0 (mod |c_ULTIMATE.start_main_~d~0#1| 2))) (.cse35 (< |c_ULTIMATE.start_main_~d~0#1| 0)) (.cse2 (div |c_ULTIMATE.start_main_~d~0#1| 2))) (let ((.cse5 (+ .cse2 1)) (.cse4 (not .cse35)) (.cse0 (and (not .cse3) .cse35)) (.cse21 (< |c_ULTIMATE.start_main_~p~0#1| 0)) (.cse13 (* |c_ULTIMATE.start_main_~B~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse20 (= 0 (mod |c_ULTIMATE.start_main_~p~0#1| 2))) (.cse1 (* |c_ULTIMATE.start_main_~B~0#1| .cse17))) (and (or (and (or .cse0 (not (= .cse1 .cse2))) (or .cse3 .cse4 (not (= .cse1 .cse5)))) (let ((.cse19 (div .cse1 2)) (.cse9 (= 0 (mod .cse1 2))) (.cse18 (< .cse1 0))) (let ((.cse6 (and (not .cse9) .cse18)) (.cse7 (+ .cse19 |c_ULTIMATE.start_main_~A~0#1|)) (.cse11 (+ .cse19 |c_ULTIMATE.start_main_~A~0#1| 1)) (.cse10 (not .cse18)) (.cse12 (* |c_ULTIMATE.start_main_~B~0#1| (div |c_ULTIMATE.start_main_~p~0#1| 4))) (.cse15 (= 0 (mod .cse17 2))) (.cse14 (< .cse17 0))) (and (or (let ((.cse8 (+ |c_ULTIMATE.start_main_~B~0#1| .cse12 .cse13 |c_ULTIMATE.start_main_~r~0#1|))) (and (or .cse6 (= .cse7 .cse8)) (or .cse9 .cse10 (= .cse11 .cse8)))) (not .cse14) .cse15) (or (let ((.cse16 (+ .cse12 .cse13 |c_ULTIMATE.start_main_~r~0#1|))) (and (or .cse6 (= .cse7 .cse16)) (or .cse9 (= .cse11 .cse16) .cse10))) (and (not .cse15) .cse14))))) (and (not .cse20) .cse21)) (let ((.cse22 (+ |c_ULTIMATE.start_main_~B~0#1| .cse1))) (or (and (or .cse3 (not (= .cse22 .cse5)) .cse4) (or .cse0 (not (= .cse22 .cse2)))) (not .cse21) (let ((.cse32 (+ .cse17 1)) (.cse34 (div .cse22 2)) (.cse33 (< .cse22 0)) (.cse27 (= 0 (mod .cse22 2)))) (let ((.cse29 (and .cse33 (not .cse27))) (.cse28 (+ |c_ULTIMATE.start_main_~A~0#1| .cse34)) (.cse24 (+ |c_ULTIMATE.start_main_~A~0#1| .cse34 1)) (.cse26 (not .cse33)) (.cse30 (* (div .cse32 2) |c_ULTIMATE.start_main_~B~0#1|)) (.cse23 (= 0 (mod .cse32 2)))) (and (or .cse23 (let ((.cse25 (+ |c_ULTIMATE.start_main_~B~0#1| .cse30 .cse13 |c_ULTIMATE.start_main_~r~0#1|))) (and (or (= .cse24 .cse25) .cse26 .cse27) (or (= .cse28 .cse25) .cse29)))) (or (let ((.cse31 (+ .cse30 .cse13 |c_ULTIMATE.start_main_~r~0#1|))) (and (or .cse29 (= .cse28 .cse31)) (or (= .cse24 .cse31) .cse26 .cse27))) (not .cse23))))) .cse20))))) is different from true