./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/partial_mod_count_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/array-programs/partial_mod_count_1.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 a899e425fabfbfedb683b8dde873d61190b064645b1f5edf26c70c4b83dfe4a2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-11 22:30:53,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-11 22:30:53,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-11 22:30:53,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-11 22:30:53,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-11 22:30:53,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-11 22:30:53,300 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-11 22:30:53,302 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-11 22:30:53,303 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-11 22:30:53,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-11 22:30:53,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-11 22:30:53,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-11 22:30:53,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-11 22:30:53,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-11 22:30:53,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-11 22:30:53,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-11 22:30:53,314 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-11 22:30:53,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-11 22:30:53,316 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-11 22:30:53,320 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-11 22:30:53,321 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-11 22:30:53,322 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-11 22:30:53,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-11 22:30:53,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-11 22:30:53,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-11 22:30:53,333 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-11 22:30:53,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-11 22:30:53,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-11 22:30:53,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-11 22:30:53,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-11 22:30:53,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-11 22:30:53,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-11 22:30:53,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-11 22:30:53,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-11 22:30:53,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-11 22:30:53,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-11 22:30:53,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-11 22:30:53,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-11 22:30:53,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-11 22:30:53,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-11 22:30:53,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-11 22:30:53,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-11 22:30:53,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-11 22:30:53,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-11 22:30:53,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-11 22:30:53,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-11 22:30:53,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-11 22:30:53,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-11 22:30:53,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-11 22:30:53,367 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-11 22:30:53,367 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-11 22:30:53,367 INFO L138 SettingsManager]: * Use SBE=true [2022-07-11 22:30:53,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-11 22:30:53,368 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-11 22:30:53,368 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-11 22:30:53,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-11 22:30:53,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-11 22:30:53,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-11 22:30:53,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-11 22:30:53,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-11 22:30:53,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-11 22:30:53,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-11 22:30:53,370 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-11 22:30:53,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-11 22:30:53,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-11 22:30:53,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-11 22:30:53,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-11 22:30:53,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:30:53,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-11 22:30:53,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-11 22:30:53,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-11 22:30:53,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-11 22:30:53,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-11 22:30:53,371 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-11 22:30:53,371 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-11 22:30:53,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-11 22:30:53,372 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a899e425fabfbfedb683b8dde873d61190b064645b1f5edf26c70c4b83dfe4a2 [2022-07-11 22:30:53,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-11 22:30:53,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-11 22:30:53,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-11 22:30:53,540 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-11 22:30:53,541 INFO L275 PluginConnector]: CDTParser initialized [2022-07-11 22:30:53,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_1.c [2022-07-11 22:30:53,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0da281ef0/3223bf726a0944df81a9a111960be872/FLAG3c7891cf4 [2022-07-11 22:30:53,961 INFO L306 CDTParser]: Found 1 translation units. [2022-07-11 22:30:53,962 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_1.c [2022-07-11 22:30:53,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0da281ef0/3223bf726a0944df81a9a111960be872/FLAG3c7891cf4 [2022-07-11 22:30:53,980 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0da281ef0/3223bf726a0944df81a9a111960be872 [2022-07-11 22:30:53,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-11 22:30:53,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-11 22:30:53,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-11 22:30:53,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-11 22:30:53,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-11 22:30:53,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:30:53" (1/1) ... [2022-07-11 22:30:53,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a689f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:53, skipping insertion in model container [2022-07-11 22:30:53,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.07 10:30:53" (1/1) ... [2022-07-11 22:30:53,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-11 22:30:54,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-11 22:30:54,126 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_1.c[323,336] [2022-07-11 22:30:54,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:30:54,154 INFO L203 MainTranslator]: Completed pre-run [2022-07-11 22:30:54,166 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_1.c[323,336] [2022-07-11 22:30:54,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-11 22:30:54,185 INFO L208 MainTranslator]: Completed translation [2022-07-11 22:30:54,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54 WrapperNode [2022-07-11 22:30:54,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-11 22:30:54,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-11 22:30:54,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-11 22:30:54,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-11 22:30:54,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (1/1) ... [2022-07-11 22:30:54,197 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (1/1) ... [2022-07-11 22:30:54,216 INFO L137 Inliner]: procedures = 13, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-07-11 22:30:54,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-11 22:30:54,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-11 22:30:54,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-11 22:30:54,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-11 22:30:54,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (1/1) ... [2022-07-11 22:30:54,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (1/1) ... [2022-07-11 22:30:54,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (1/1) ... [2022-07-11 22:30:54,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (1/1) ... [2022-07-11 22:30:54,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (1/1) ... [2022-07-11 22:30:54,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (1/1) ... [2022-07-11 22:30:54,249 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (1/1) ... [2022-07-11 22:30:54,252 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-11 22:30:54,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-11 22:30:54,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-11 22:30:54,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-11 22:30:54,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (1/1) ... [2022-07-11 22:30:54,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-11 22:30:54,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:30:54,280 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) [2022-07-11 22:30:54,286 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 [2022-07-11 22:30:54,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-11 22:30:54,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-11 22:30:54,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-11 22:30:54,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-11 22:30:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-11 22:30:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-11 22:30:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-11 22:30:54,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-11 22:30:54,353 INFO L234 CfgBuilder]: Building ICFG [2022-07-11 22:30:54,354 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-11 22:30:54,496 INFO L275 CfgBuilder]: Performing block encoding [2022-07-11 22:30:54,500 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-11 22:30:54,500 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-11 22:30:54,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:30:54 BoogieIcfgContainer [2022-07-11 22:30:54,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-11 22:30:54,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-11 22:30:54,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-11 22:30:54,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-11 22:30:54,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.07 10:30:53" (1/3) ... [2022-07-11 22:30:54,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8a67d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:30:54, skipping insertion in model container [2022-07-11 22:30:54,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.07 10:30:54" (2/3) ... [2022-07-11 22:30:54,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d8a67d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.07 10:30:54, skipping insertion in model container [2022-07-11 22:30:54,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.07 10:30:54" (3/3) ... [2022-07-11 22:30:54,508 INFO L111 eAbstractionObserver]: Analyzing ICFG partial_mod_count_1.c [2022-07-11 22:30:54,517 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-11 22:30:54,518 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-11 22:30:54,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-11 22:30:54,586 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fdbf50d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1fa6418 [2022-07-11 22:30:54,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-11 22:30:54,596 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:54,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-11 22:30:54,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:30:54,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:30:54,603 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:30:54,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:30:54,607 INFO L85 PathProgramCache]: Analyzing trace with hash -694175938, now seen corresponding path program 1 times [2022-07-11 22:30:54,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:30:54,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956686417] [2022-07-11 22:30:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:30:54,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:30:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:30:54,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:30:54,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:30:54,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956686417] [2022-07-11 22:30:54,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956686417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:30:54,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:30:54,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-11 22:30:54,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904194250] [2022-07-11 22:30:54,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:30:54,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-11 22:30:54,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:30:54,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-11 22:30:54,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-11 22:30:54,753 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:54,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:30:54,764 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-07-11 22:30:54,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-11 22:30:54,766 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-11 22:30:54,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:30:54,771 INFO L225 Difference]: With dead ends: 31 [2022-07-11 22:30:54,771 INFO L226 Difference]: Without dead ends: 14 [2022-07-11 22:30:54,776 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 [2022-07-11 22:30:54,780 INFO L413 NwaCegarLoop]: 21 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, 21 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 [2022-07-11 22:30:54,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:30:54,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-07-11 22:30:54,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-07-11 22:30:54,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-07-11 22:30:54,805 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 9 [2022-07-11 22:30:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:30:54,805 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-07-11 22:30:54,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:54,806 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-07-11 22:30:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-11 22:30:54,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:30:54,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:30:54,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-11 22:30:54,807 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:30:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:30:54,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1866781837, now seen corresponding path program 1 times [2022-07-11 22:30:54,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:30:54,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741238704] [2022-07-11 22:30:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:30:54,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:30:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:30:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:30:54,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:30:54,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741238704] [2022-07-11 22:30:54,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741238704] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:30:54,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:30:54,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-11 22:30:54,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5758019] [2022-07-11 22:30:54,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:30:54,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-11 22:30:54,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:30:54,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-11 22:30:54,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-11 22:30:54,884 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:54,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:30:54,913 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2022-07-11 22:30:54,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-11 22:30:54,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-11 22:30:54,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:30:54,914 INFO L225 Difference]: With dead ends: 37 [2022-07-11 22:30:54,914 INFO L226 Difference]: Without dead ends: 25 [2022-07-11 22:30:54,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-11 22:30:54,915 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:30:54,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 14 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:30:54,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-11 22:30:54,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2022-07-11 22:30:54,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:54,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-07-11 22:30:54,920 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 9 [2022-07-11 22:30:54,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:30:54,929 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-07-11 22:30:54,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:54,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-07-11 22:30:54,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-11 22:30:54,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:30:54,934 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:30:54,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-11 22:30:54,934 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:30:54,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:30:54,937 INFO L85 PathProgramCache]: Analyzing trace with hash 97563565, now seen corresponding path program 1 times [2022-07-11 22:30:54,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:30:54,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764285220] [2022-07-11 22:30:54,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:30:54,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:30:54,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:30:54,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:30:54,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:30:54,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764285220] [2022-07-11 22:30:54,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764285220] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-11 22:30:54,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625300790] [2022-07-11 22:30:54,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:30:54,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:30:54,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:30:55,000 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) [2022-07-11 22:30:55,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-11 22:30:55,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:30:55,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-11 22:30:55,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:30:55,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:30:55,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:30:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:30:55,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625300790] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:30:55,136 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-11 22:30:55,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-07-11 22:30:55,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385643562] [2022-07-11 22:30:55,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-11 22:30:55,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-11 22:30:55,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:30:55,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-11 22:30:55,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-07-11 22:30:55,138 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:55,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:30:55,237 INFO L93 Difference]: Finished difference Result 61 states and 75 transitions. [2022-07-11 22:30:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-11 22:30:55,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-11 22:30:55,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:30:55,238 INFO L225 Difference]: With dead ends: 61 [2022-07-11 22:30:55,238 INFO L226 Difference]: Without dead ends: 49 [2022-07-11 22:30:55,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2022-07-11 22:30:55,239 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 104 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:30:55,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 32 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:30:55,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-11 22:30:55,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 24. [2022-07-11 22:30:55,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:55,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-07-11 22:30:55,244 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 12 [2022-07-11 22:30:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:30:55,245 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-07-11 22:30:55,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:55,245 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-07-11 22:30:55,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-11 22:30:55,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:30:55,246 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:30:55,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-11 22:30:55,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:30:55,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:30:55,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:30:55,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1361285581, now seen corresponding path program 1 times [2022-07-11 22:30:55,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:30:55,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491692816] [2022-07-11 22:30:55,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:30:55,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:30:55,470 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:30:55,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2045451580] [2022-07-11 22:30:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:30:55,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:30:55,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:30:55,473 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) [2022-07-11 22:30:55,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-11 22:30:55,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:30:55,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-11 22:30:55,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:30:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:30:55,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:30:55,646 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-11 22:30:55,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:30:55,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491692816] [2022-07-11 22:30:55,647 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:30:55,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045451580] [2022-07-11 22:30:55,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045451580] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:30:55,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:30:55,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-07-11 22:30:55,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285008515] [2022-07-11 22:30:55,648 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:30:55,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-11 22:30:55,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:30:55,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-11 22:30:55,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-07-11 22:30:55,649 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:55,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:30:55,871 INFO L93 Difference]: Finished difference Result 131 states and 157 transitions. [2022-07-11 22:30:55,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-11 22:30:55,872 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-11 22:30:55,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:30:55,876 INFO L225 Difference]: With dead ends: 131 [2022-07-11 22:30:55,876 INFO L226 Difference]: Without dead ends: 117 [2022-07-11 22:30:55,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2022-07-11 22:30:55,880 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 324 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:30:55,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 62 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-11 22:30:55,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-11 22:30:55,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 42. [2022-07-11 22:30:55,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-07-11 22:30:55,895 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 21 [2022-07-11 22:30:55,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:30:55,896 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-07-11 22:30:55,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:55,896 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-07-11 22:30:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-11 22:30:55,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:30:55,897 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:30:55,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-11 22:30:56,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-11 22:30:56,112 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:30:56,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:30:56,112 INFO L85 PathProgramCache]: Analyzing trace with hash 194524081, now seen corresponding path program 2 times [2022-07-11 22:30:56,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:30:56,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931609766] [2022-07-11 22:30:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:30:56,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:30:56,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:30:56,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1083037883] [2022-07-11 22:30:56,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 22:30:56,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:30:56,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:30:56,147 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) [2022-07-11 22:30:56,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-11 22:30:56,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-11 22:30:56,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:30:56,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-11 22:30:56,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:30:56,354 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-07-11 22:30:56,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-11 22:30:56,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:30:56,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931609766] [2022-07-11 22:30:56,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:30:56,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083037883] [2022-07-11 22:30:56,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083037883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-11 22:30:56,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-11 22:30:56,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-11 22:30:56,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149797027] [2022-07-11 22:30:56,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-11 22:30:56,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-11 22:30:56,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:30:56,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-11 22:30:56,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-11 22:30:56,357 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:56,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:30:56,410 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2022-07-11 22:30:56,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-11 22:30:56,411 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-07-11 22:30:56,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:30:56,412 INFO L225 Difference]: With dead ends: 61 [2022-07-11 22:30:56,412 INFO L226 Difference]: Without dead ends: 59 [2022-07-11 22:30:56,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-11 22:30:56,413 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:30:56,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 28 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:30:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-11 22:30:56,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2022-07-11 22:30:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.1886792452830188) internal successors, (63), 53 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-07-11 22:30:56,418 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 39 [2022-07-11 22:30:56,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:30:56,418 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-07-11 22:30:56,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:56,419 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-07-11 22:30:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-11 22:30:56,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:30:56,419 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:30:56,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-11 22:30:56,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:30:56,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:30:56,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:30:56,631 INFO L85 PathProgramCache]: Analyzing trace with hash -838184220, now seen corresponding path program 1 times [2022-07-11 22:30:56,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:30:56,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813294033] [2022-07-11 22:30:56,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:30:56,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:30:56,659 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:30:56,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262473132] [2022-07-11 22:30:56,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:30:56,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:30:56,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:30:56,660 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) [2022-07-11 22:30:56,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-11 22:30:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-11 22:30:56,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-11 22:30:56,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:30:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:30:56,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:30:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:30:57,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:30:57,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813294033] [2022-07-11 22:30:57,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:30:57,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262473132] [2022-07-11 22:30:57,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262473132] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:30:57,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:30:57,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2022-07-11 22:30:57,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956706524] [2022-07-11 22:30:57,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:30:57,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-11 22:30:57,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:30:57,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-11 22:30:57,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=347, Unknown=0, NotChecked=0, Total=650 [2022-07-11 22:30:57,072 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:57,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:30:57,505 INFO L93 Difference]: Finished difference Result 547 states and 646 transitions. [2022-07-11 22:30:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-11 22:30:57,506 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-07-11 22:30:57,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:30:57,509 INFO L225 Difference]: With dead ends: 547 [2022-07-11 22:30:57,509 INFO L226 Difference]: Without dead ends: 512 [2022-07-11 22:30:57,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=589, Invalid=743, Unknown=0, NotChecked=0, Total=1332 [2022-07-11 22:30:57,513 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 983 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-11 22:30:57,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 134 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-11 22:30:57,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-07-11 22:30:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 90. [2022-07-11 22:30:57,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 89 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:57,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 105 transitions. [2022-07-11 22:30:57,539 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 105 transitions. Word has length 45 [2022-07-11 22:30:57,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:30:57,539 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 105 transitions. [2022-07-11 22:30:57,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 25 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:30:57,539 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 105 transitions. [2022-07-11 22:30:57,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-07-11 22:30:57,540 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:30:57,540 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 11, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:30:57,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-11 22:30:57,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:30:57,754 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:30:57,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:30:57,755 INFO L85 PathProgramCache]: Analyzing trace with hash 1895724964, now seen corresponding path program 2 times [2022-07-11 22:30:57,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:30:57,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207741825] [2022-07-11 22:30:57,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:30:57,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:30:57,783 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:30:57,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725629050] [2022-07-11 22:30:57,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-11 22:30:57,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:30:57,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:30:57,785 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) [2022-07-11 22:30:57,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-11 22:30:57,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-11 22:30:57,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:30:57,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 25 conjunts are in the unsatisfiable core [2022-07-11 22:30:57,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:30:58,257 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:30:58,258 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:30:58,759 INFO L134 CoverageAnalysis]: Checked inductivity of 719 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-11 22:30:58,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:30:58,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207741825] [2022-07-11 22:30:58,760 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:30:58,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725629050] [2022-07-11 22:30:58,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725629050] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:30:58,760 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:30:58,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49 [2022-07-11 22:30:58,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084362493] [2022-07-11 22:30:58,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:30:58,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-11 22:30:58,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:30:58,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-11 22:30:58,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1179, Invalid=1271, Unknown=0, NotChecked=0, Total=2450 [2022-07-11 22:30:58,762 INFO L87 Difference]: Start difference. First operand 90 states and 105 transitions. Second operand has 50 states, 50 states have (on average 2.94) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:31:00,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:00,100 INFO L93 Difference]: Finished difference Result 1135 states and 1342 transitions. [2022-07-11 22:31:00,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-11 22:31:00,101 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.94) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2022-07-11 22:31:00,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:00,104 INFO L225 Difference]: With dead ends: 1135 [2022-07-11 22:31:00,104 INFO L226 Difference]: Without dead ends: 1082 [2022-07-11 22:31:00,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2329, Invalid=2927, Unknown=0, NotChecked=0, Total=5256 [2022-07-11 22:31:00,107 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1681 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 312 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 312 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-11 22:31:00,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1681 Valid, 278 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [312 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-11 22:31:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2022-07-11 22:31:00,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 162. [2022-07-11 22:31:00,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.173913043478261) internal successors, (189), 161 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:31:00,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2022-07-11 22:31:00,124 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 81 [2022-07-11 22:31:00,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:00,125 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2022-07-11 22:31:00,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.94) internal successors, (147), 49 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:31:00,126 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2022-07-11 22:31:00,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-11 22:31:00,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:00,130 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:00,148 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-11 22:31:00,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:00,336 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash 694735140, now seen corresponding path program 3 times [2022-07-11 22:31:00,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:00,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821651605] [2022-07-11 22:31:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:00,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:00,378 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:31:00,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [850286082] [2022-07-11 22:31:00,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-11 22:31:00,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:00,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:00,380 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) [2022-07-11 22:31:00,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-11 22:31:00,465 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-11 22:31:00,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:31:00,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-11 22:31:00,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:31:00,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-07-11 22:31:00,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:31:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 3155 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2022-07-11 22:31:01,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:01,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821651605] [2022-07-11 22:31:01,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:31:01,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850286082] [2022-07-11 22:31:01,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850286082] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:31:01,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:31:01,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-07-11 22:31:01,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098291314] [2022-07-11 22:31:01,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:31:01,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-11 22:31:01,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:01,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-11 22:31:01,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-07-11 22:31:01,645 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:31:01,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:01,765 INFO L93 Difference]: Finished difference Result 193 states and 228 transitions. [2022-07-11 22:31:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-11 22:31:01,766 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2022-07-11 22:31:01,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:01,768 INFO L225 Difference]: With dead ends: 193 [2022-07-11 22:31:01,768 INFO L226 Difference]: Without dead ends: 191 [2022-07-11 22:31:01,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 294 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=188, Unknown=0, NotChecked=0, Total=306 [2022-07-11 22:31:01,769 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 163 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-11 22:31:01,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 42 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-11 22:31:01,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-07-11 22:31:01,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 186. [2022-07-11 22:31:01,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 1.172972972972973) internal successors, (217), 185 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:31:01,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 217 transitions. [2022-07-11 22:31:01,786 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 217 transitions. Word has length 153 [2022-07-11 22:31:01,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:01,787 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 217 transitions. [2022-07-11 22:31:01,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.272727272727273) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:31:01,788 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 217 transitions. [2022-07-11 22:31:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-11 22:31:01,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:01,789 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:01,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-11 22:31:01,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:01,999 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:02,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:02,000 INFO L85 PathProgramCache]: Analyzing trace with hash -86837392, now seen corresponding path program 4 times [2022-07-11 22:31:02,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:02,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970366835] [2022-07-11 22:31:02,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:02,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:02,035 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:31:02,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1921683188] [2022-07-11 22:31:02,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-11 22:31:02,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:02,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:02,046 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) [2022-07-11 22:31:02,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-11 22:31:02,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-11 22:31:02,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-11 22:31:02,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-11 22:31:02,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-11 22:31:02,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3231 backedges. 737 proven. 1689 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-07-11 22:31:02,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-11 22:31:04,409 INFO L134 CoverageAnalysis]: Checked inductivity of 3231 backedges. 737 proven. 1689 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-07-11 22:31:04,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-11 22:31:04,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970366835] [2022-07-11 22:31:04,410 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-11 22:31:04,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921683188] [2022-07-11 22:31:04,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921683188] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-11 22:31:04,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-11 22:31:04,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 63 [2022-07-11 22:31:04,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61095109] [2022-07-11 22:31:04,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-11 22:31:04,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-07-11 22:31:04,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-11 22:31:04,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-07-11 22:31:04,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1221, Invalid=2685, Unknown=0, NotChecked=0, Total=3906 [2022-07-11 22:31:04,413 INFO L87 Difference]: Start difference. First operand 186 states and 217 transitions. Second operand has 63 states, 63 states have (on average 3.4444444444444446) internal successors, (217), 63 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:31:09,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-11 22:31:09,943 INFO L93 Difference]: Finished difference Result 1036 states and 1266 transitions. [2022-07-11 22:31:09,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-07-11 22:31:09,944 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.4444444444444446) internal successors, (217), 63 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 177 [2022-07-11 22:31:09,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-11 22:31:09,946 INFO L225 Difference]: With dead ends: 1036 [2022-07-11 22:31:09,946 INFO L226 Difference]: Without dead ends: 1034 [2022-07-11 22:31:09,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 531 GetRequests, 290 SyntacticMatches, 1 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22544 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=15355, Invalid=42967, Unknown=0, NotChecked=0, Total=58322 [2022-07-11 22:31:09,955 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 914 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 583 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 2353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-11 22:31:09,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 680 Invalid, 2353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-11 22:31:09,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2022-07-11 22:31:09,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 234. [2022-07-11 22:31:09,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.1716738197424892) internal successors, (273), 233 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:31:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 273 transitions. [2022-07-11 22:31:09,977 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 273 transitions. Word has length 177 [2022-07-11 22:31:09,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-11 22:31:09,978 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 273 transitions. [2022-07-11 22:31:09,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.4444444444444446) internal successors, (217), 63 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-11 22:31:09,978 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 273 transitions. [2022-07-11 22:31:09,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-07-11 22:31:09,979 INFO L187 NwaCegarLoop]: Found error trace [2022-07-11 22:31:09,979 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 23, 23, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2022-07-11 22:31:09,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-11 22:31:10,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:10,194 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-11 22:31:10,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-11 22:31:10,195 INFO L85 PathProgramCache]: Analyzing trace with hash -148776952, now seen corresponding path program 5 times [2022-07-11 22:31:10,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-11 22:31:10,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515127294] [2022-07-11 22:31:10,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-11 22:31:10,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-11 22:31:10,242 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-11 22:31:10,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079733801] [2022-07-11 22:31:10,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-11 22:31:10,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-11 22:31:10,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-11 22:31:10,253 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) [2022-07-11 22:31:10,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process