./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound100.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 4d17ed8dd7de3007f02b2c3df3a75e1fbb5469b0133c538c149df8a118a565d0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 03:44:23,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 03:44:23,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 03:44:23,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 03:44:23,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 03:44:23,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 03:44:23,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 03:44:23,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 03:44:23,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 03:44:23,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 03:44:23,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 03:44:23,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 03:44:23,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 03:44:23,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 03:44:23,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 03:44:23,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 03:44:23,368 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 03:44:23,369 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 03:44:23,371 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 03:44:23,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 03:44:23,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 03:44:23,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 03:44:23,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 03:44:23,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 03:44:23,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 03:44:23,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 03:44:23,380 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 03:44:23,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 03:44:23,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 03:44:23,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 03:44:23,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 03:44:23,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 03:44:23,383 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 03:44:23,384 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 03:44:23,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 03:44:23,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 03:44:23,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 03:44:23,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 03:44:23,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 03:44:23,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 03:44:23,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 03:44:23,388 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 03:44:23,406 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 03:44:23,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 03:44:23,407 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 03:44:23,407 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 03:44:23,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 03:44:23,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 03:44:23,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 03:44:23,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 03:44:23,417 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 03:44:23,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 03:44:23,418 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 03:44:23,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 03:44:23,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 03:44:23,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 03:44:23,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 03:44:23,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 03:44:23,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 03:44:23,419 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 03:44:23,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 03:44:23,419 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 03:44:23,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 03:44:23,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 03:44:23,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 03:44:23,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 03:44:23,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 03:44:23,420 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 03:44:23,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 03:44:23,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 03:44:23,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 03:44:23,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 03:44:23,421 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 03:44:23,421 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 03:44:23,422 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 03:44:23,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 03:44:23,422 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 03:44:23,422 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d17ed8dd7de3007f02b2c3df3a75e1fbb5469b0133c538c149df8a118a565d0 [2023-02-18 03:44:23,626 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 03:44:23,642 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 03:44:23,644 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 03:44:23,645 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 03:44:23,645 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 03:44:23,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound100.c [2023-02-18 03:44:24,710 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 03:44:24,876 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 03:44:24,877 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound100.c [2023-02-18 03:44:24,883 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f67caef/ba8e4f4547a64047a4fed0988796b335/FLAG94ed94a9b [2023-02-18 03:44:24,897 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b9f67caef/ba8e4f4547a64047a4fed0988796b335 [2023-02-18 03:44:24,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 03:44:24,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 03:44:24,904 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 03:44:24,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 03:44:24,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 03:44:24,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:44:24" (1/1) ... [2023-02-18 03:44:24,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a4fd80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:24, skipping insertion in model container [2023-02-18 03:44:24,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:44:24" (1/1) ... [2023-02-18 03:44:24,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 03:44:24,935 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 03:44:25,077 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound100.c[524,537] [2023-02-18 03:44:25,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 03:44:25,108 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 03:44:25,118 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_unwindbound100.c[524,537] [2023-02-18 03:44:25,125 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 03:44:25,135 INFO L208 MainTranslator]: Completed translation [2023-02-18 03:44:25,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25 WrapperNode [2023-02-18 03:44:25,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 03:44:25,137 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 03:44:25,137 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 03:44:25,137 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 03:44:25,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,169 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2023-02-18 03:44:25,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 03:44:25,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 03:44:25,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 03:44:25,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 03:44:25,176 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,185 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 03:44:25,188 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 03:44:25,188 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 03:44:25,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 03:44:25,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (1/1) ... [2023-02-18 03:44:25,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 03:44:25,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:25,218 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 03:44:25,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 03:44:25,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 03:44:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 03:44:25,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 03:44:25,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 03:44:25,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 03:44:25,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 03:44:25,315 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 03:44:25,318 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 03:44:25,499 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 03:44:25,504 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 03:44:25,504 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-18 03:44:25,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:44:25 BoogieIcfgContainer [2023-02-18 03:44:25,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 03:44:25,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 03:44:25,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 03:44:25,509 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 03:44:25,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 03:44:24" (1/3) ... [2023-02-18 03:44:25,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2865ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:44:25, skipping insertion in model container [2023-02-18 03:44:25,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:44:25" (2/3) ... [2023-02-18 03:44:25,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2865ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:44:25, skipping insertion in model container [2023-02-18 03:44:25,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:44:25" (3/3) ... [2023-02-18 03:44:25,511 INFO L112 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound100.c [2023-02-18 03:44:25,538 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 03:44:25,539 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 03:44:25,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 03:44:25,616 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@40da1f3a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 03:44:25,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 03:44:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 03:44:25,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 03:44:25,625 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:25,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:25,626 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:25,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:25,631 INFO L85 PathProgramCache]: Analyzing trace with hash -563977895, now seen corresponding path program 1 times [2023-02-18 03:44:25,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:25,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056165162] [2023-02-18 03:44:25,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:25,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:44:25,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:25,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056165162] [2023-02-18 03:44:25,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 03:44:25,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263330701] [2023-02-18 03:44:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:25,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:25,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:25,754 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:25,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 03:44:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:44:25,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 03:44:25,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:25,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:25,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 03:44:25,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263330701] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 03:44:25,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 03:44:25,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 03:44:25,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013150313] [2023-02-18 03:44:25,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 03:44:25,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 03:44:25,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:25,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 03:44:25,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 03:44:25,862 INFO L87 Difference]: Start difference. First operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 03:44:25,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:44:25,878 INFO L93 Difference]: Finished difference Result 43 states and 63 transitions. [2023-02-18 03:44:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 03:44:25,880 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 03:44:25,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:44:25,886 INFO L225 Difference]: With dead ends: 43 [2023-02-18 03:44:25,887 INFO L226 Difference]: Without dead ends: 19 [2023-02-18 03:44:25,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 03:44:25,892 INFO L413 NwaCegarLoop]: 29 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, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 03:44:25,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 03:44:25,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-18 03:44:25,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-18 03:44:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:44:25,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-02-18 03:44:25,921 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 9 [2023-02-18 03:44:25,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:44:25,921 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-02-18 03:44:25,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 03:44:25,922 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-02-18 03:44:25,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 03:44:25,922 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:25,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:25,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 03:44:26,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-18 03:44:26,127 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1986058659, now seen corresponding path program 1 times [2023-02-18 03:44:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:26,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141064289] [2023-02-18 03:44:26,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:26,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:26,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:44:26,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:26,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141064289] [2023-02-18 03:44:26,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 03:44:26,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868107128] [2023-02-18 03:44:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:26,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:26,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:26,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:26,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 03:44:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:44:26,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 03:44:26,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:26,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 03:44:26,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868107128] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 03:44:26,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 03:44:26,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 03:44:26,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443249861] [2023-02-18 03:44:26,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 03:44:26,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 03:44:26,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:26,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 03:44:26,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 03:44:26,226 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 03:44:26,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:44:26,240 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2023-02-18 03:44:26,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 03:44:26,241 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 03:44:26,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:44:26,241 INFO L225 Difference]: With dead ends: 29 [2023-02-18 03:44:26,241 INFO L226 Difference]: Without dead ends: 21 [2023-02-18 03:44:26,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 03:44:26,243 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 03:44:26,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 03:44:26,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-18 03:44:26,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-18 03:44:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:44:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2023-02-18 03:44:26,249 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 10 [2023-02-18 03:44:26,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:44:26,250 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2023-02-18 03:44:26,250 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 03:44:26,250 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2023-02-18 03:44:26,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 03:44:26,250 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:26,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:26,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 03:44:26,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-18 03:44:26,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:26,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:26,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1984271199, now seen corresponding path program 1 times [2023-02-18 03:44:26,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:26,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607513652] [2023-02-18 03:44:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:26,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:26,471 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:44:26,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723006809] [2023-02-18 03:44:26,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:26,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:26,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:26,478 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:26,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 03:44:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:44:26,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 03:44:26,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:26,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 03:44:26,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:26,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607513652] [2023-02-18 03:44:26,577 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 03:44:26,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723006809] [2023-02-18 03:44:26,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723006809] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 03:44:26,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 03:44:26,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 03:44:26,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582020314] [2023-02-18 03:44:26,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 03:44:26,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 03:44:26,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:26,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 03:44:26,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 03:44:26,580 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 03:44:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:44:26,637 INFO L93 Difference]: Finished difference Result 34 states and 45 transitions. [2023-02-18 03:44:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 03:44:26,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 03:44:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:44:26,639 INFO L225 Difference]: With dead ends: 34 [2023-02-18 03:44:26,639 INFO L226 Difference]: Without dead ends: 32 [2023-02-18 03:44:26,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 03:44:26,640 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 9 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 03:44:26,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 52 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 03:44:26,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-18 03:44:26,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2023-02-18 03:44:26,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 03:44:26,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-02-18 03:44:26,647 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 10 [2023-02-18 03:44:26,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:44:26,648 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-02-18 03:44:26,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 03:44:26,648 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-02-18 03:44:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-18 03:44:26,649 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:26,649 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:26,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 03:44:26,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:26,854 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:26,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:26,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1194524114, now seen corresponding path program 1 times [2023-02-18 03:44:26,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:26,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628317649] [2023-02-18 03:44:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:26,869 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:44:26,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676846863] [2023-02-18 03:44:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:26,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:26,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:26,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:26,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 03:44:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:44:26,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 03:44:26,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:27,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 03:44:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:27,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:27,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628317649] [2023-02-18 03:44:27,299 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 03:44:27,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676846863] [2023-02-18 03:44:27,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676846863] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 03:44:27,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 03:44:27,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2023-02-18 03:44:27,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080438993] [2023-02-18 03:44:27,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 03:44:27,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 03:44:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:27,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 03:44:27,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-02-18 03:44:27,303 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:44:27,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:44:27,617 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2023-02-18 03:44:27,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 03:44:27,617 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-02-18 03:44:27,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:44:27,619 INFO L225 Difference]: With dead ends: 47 [2023-02-18 03:44:27,619 INFO L226 Difference]: Without dead ends: 45 [2023-02-18 03:44:27,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-02-18 03:44:27,621 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 79 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 03:44:27,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 76 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 03:44:27,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-18 03:44:27,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2023-02-18 03:44:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 25 states have internal predecessors, (28), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 03:44:27,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-02-18 03:44:27,633 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2023-02-18 03:44:27,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:44:27,633 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-02-18 03:44:27,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 12 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:44:27,639 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-02-18 03:44:27,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 03:44:27,640 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:27,640 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:27,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 03:44:27,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:27,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:27,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:27,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1756733383, now seen corresponding path program 1 times [2023-02-18 03:44:27,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:27,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601953196] [2023-02-18 03:44:27,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:27,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:27,863 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:44:27,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [937419984] [2023-02-18 03:44:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:27,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:27,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:27,867 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:27,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 03:44:27,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:44:27,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 03:44:27,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:27,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 03:44:27,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:27,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:27,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601953196] [2023-02-18 03:44:27,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 03:44:27,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [937419984] [2023-02-18 03:44:27,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [937419984] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 03:44:27,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 03:44:27,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-18 03:44:27,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741664092] [2023-02-18 03:44:27,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 03:44:27,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 03:44:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:27,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 03:44:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-18 03:44:27,949 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:44:28,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:44:28,039 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2023-02-18 03:44:28,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 03:44:28,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-18 03:44:28,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:44:28,043 INFO L225 Difference]: With dead ends: 95 [2023-02-18 03:44:28,043 INFO L226 Difference]: Without dead ends: 85 [2023-02-18 03:44:28,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-18 03:44:28,046 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 56 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 03:44:28,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 150 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 03:44:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2023-02-18 03:44:28,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2023-02-18 03:44:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 61 states have internal predecessors, (77), 13 states have call successors, (13), 9 states have call predecessors, (13), 8 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 03:44:28,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2023-02-18 03:44:28,078 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 19 [2023-02-18 03:44:28,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:44:28,078 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2023-02-18 03:44:28,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:44:28,079 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2023-02-18 03:44:28,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 03:44:28,079 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:28,080 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:28,091 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 03:44:28,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:28,286 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:28,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:28,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1754945923, now seen corresponding path program 1 times [2023-02-18 03:44:28,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:28,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556614615] [2023-02-18 03:44:28,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:28,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:28,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:44:28,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227510627] [2023-02-18 03:44:28,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:28,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:28,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:28,298 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:28,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 03:44:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:44:28,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-18 03:44:28,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:28,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:28,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 03:44:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:29,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:29,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556614615] [2023-02-18 03:44:29,519 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 03:44:29,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227510627] [2023-02-18 03:44:29,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227510627] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 03:44:29,520 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 03:44:29,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2023-02-18 03:44:29,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655581170] [2023-02-18 03:44:29,521 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 03:44:29,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-18 03:44:29,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:29,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-18 03:44:29,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-02-18 03:44:29,523 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:44:31,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:44:31,367 INFO L93 Difference]: Finished difference Result 119 states and 156 transitions. [2023-02-18 03:44:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 03:44:31,368 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-18 03:44:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:44:31,370 INFO L225 Difference]: With dead ends: 119 [2023-02-18 03:44:31,371 INFO L226 Difference]: Without dead ends: 113 [2023-02-18 03:44:31,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2023-02-18 03:44:31,373 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 111 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-02-18 03:44:31,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 83 Invalid, 325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-02-18 03:44:31,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-02-18 03:44:31,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 71. [2023-02-18 03:44:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 56 states have internal predecessors, (72), 9 states have call successors, (9), 8 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 03:44:31,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2023-02-18 03:44:31,401 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 19 [2023-02-18 03:44:31,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:44:31,402 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2023-02-18 03:44:31,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 16 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:44:31,403 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2023-02-18 03:44:31,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 03:44:31,405 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:31,405 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:31,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 03:44:31,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:31,613 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:31,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:31,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1942139802, now seen corresponding path program 1 times [2023-02-18 03:44:31,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:31,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948235476] [2023-02-18 03:44:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:31,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:31,631 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:44:31,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165336647] [2023-02-18 03:44:31,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:31,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:31,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:31,645 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:31,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 03:44:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 03:44:31,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-18 03:44:31,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 03:44:31,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 03:44:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 03:44:31,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:31,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948235476] [2023-02-18 03:44:31,770 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 03:44:31,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165336647] [2023-02-18 03:44:31,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165336647] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 03:44:31,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 03:44:31,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-02-18 03:44:31,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132798540] [2023-02-18 03:44:31,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 03:44:31,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 03:44:31,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:31,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 03:44:31,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-18 03:44:31,772 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:44:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:44:31,920 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2023-02-18 03:44:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 03:44:31,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-02-18 03:44:31,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:44:31,922 INFO L225 Difference]: With dead ends: 78 [2023-02-18 03:44:31,922 INFO L226 Difference]: Without dead ends: 58 [2023-02-18 03:44:31,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-18 03:44:31,923 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 03:44:31,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 84 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 03:44:31,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-18 03:44:31,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-02-18 03:44:31,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 47 states have internal predecessors, (60), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 03:44:31,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2023-02-18 03:44:31,938 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 21 [2023-02-18 03:44:31,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:44:31,938 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2023-02-18 03:44:31,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 03:44:31,938 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2023-02-18 03:44:31,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-18 03:44:31,939 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:31,939 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:31,948 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 03:44:32,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:32,145 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:32,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:32,145 INFO L85 PathProgramCache]: Analyzing trace with hash 136508765, now seen corresponding path program 2 times [2023-02-18 03:44:32,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:32,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171688250] [2023-02-18 03:44:32,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:32,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:32,157 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:44:32,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2059853758] [2023-02-18 03:44:32,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 03:44:32,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:32,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:32,159 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:32,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 03:44:32,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 03:44:32,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 03:44:32,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 03:44:32,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:32,254 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:32,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 03:44:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 03:44:32,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:32,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171688250] [2023-02-18 03:44:32,306 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 03:44:32,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059853758] [2023-02-18 03:44:32,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059853758] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 03:44:32,307 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 03:44:32,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-18 03:44:32,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119523455] [2023-02-18 03:44:32,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 03:44:32,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 03:44:32,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:32,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 03:44:32,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-18 03:44:32,309 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-18 03:44:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:44:32,444 INFO L93 Difference]: Finished difference Result 132 states and 169 transitions. [2023-02-18 03:44:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 03:44:32,445 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 46 [2023-02-18 03:44:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:44:32,447 INFO L225 Difference]: With dead ends: 132 [2023-02-18 03:44:32,447 INFO L226 Difference]: Without dead ends: 124 [2023-02-18 03:44:32,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-02-18 03:44:32,449 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 208 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 03:44:32,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 175 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 03:44:32,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-02-18 03:44:32,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2023-02-18 03:44:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 100 states have (on average 1.32) internal successors, (132), 101 states have internal predecessors, (132), 12 states have call successors, (12), 11 states have call predecessors, (12), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-18 03:44:32,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 155 transitions. [2023-02-18 03:44:32,489 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 155 transitions. Word has length 46 [2023-02-18 03:44:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:44:32,490 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 155 transitions. [2023-02-18 03:44:32,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.428571428571429) internal successors, (62), 14 states have internal predecessors, (62), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-18 03:44:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 155 transitions. [2023-02-18 03:44:32,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-02-18 03:44:32,497 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:32,497 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:32,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 03:44:32,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-18 03:44:32,701 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:32,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:32,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1689445411, now seen corresponding path program 3 times [2023-02-18 03:44:32,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:32,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546871260] [2023-02-18 03:44:32,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:32,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:32,712 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:44:32,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208761551] [2023-02-18 03:44:32,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 03:44:32,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:32,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:32,714 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:32,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 03:44:32,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-18 03:44:32,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 03:44:32,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 03:44:32,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:32,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 03:44:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2023-02-18 03:44:33,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:33,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546871260] [2023-02-18 03:44:33,138 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 03:44:33,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208761551] [2023-02-18 03:44:33,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208761551] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 03:44:33,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 03:44:33,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2023-02-18 03:44:33,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558719819] [2023-02-18 03:44:33,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 03:44:33,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-18 03:44:33,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:33,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-18 03:44:33,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=369, Unknown=0, NotChecked=0, Total=650 [2023-02-18 03:44:33,141 INFO L87 Difference]: Start difference. First operand 124 states and 155 transitions. Second operand has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-18 03:44:33,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:44:33,536 INFO L93 Difference]: Finished difference Result 264 states and 343 transitions. [2023-02-18 03:44:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-02-18 03:44:33,536 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Word has length 100 [2023-02-18 03:44:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:44:33,540 INFO L225 Difference]: With dead ends: 264 [2023-02-18 03:44:33,540 INFO L226 Difference]: Without dead ends: 256 [2023-02-18 03:44:33,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=796, Invalid=1366, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 03:44:33,543 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 477 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 03:44:33,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 319 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 03:44:33,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-02-18 03:44:33,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2023-02-18 03:44:33,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 208 states have (on average 1.3269230769230769) internal successors, (276), 209 states have internal predecessors, (276), 24 states have call successors, (24), 23 states have call predecessors, (24), 23 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-02-18 03:44:33,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 323 transitions. [2023-02-18 03:44:33,597 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 323 transitions. Word has length 100 [2023-02-18 03:44:33,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:44:33,598 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 323 transitions. [2023-02-18 03:44:33,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 4.923076923076923) internal successors, (128), 26 states have internal predecessors, (128), 21 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-02-18 03:44:33,599 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 323 transitions. [2023-02-18 03:44:33,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2023-02-18 03:44:33,603 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:33,603 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:33,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 03:44:33,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:33,810 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:33,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:33,810 INFO L85 PathProgramCache]: Analyzing trace with hash 482330845, now seen corresponding path program 4 times [2023-02-18 03:44:33,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:33,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536176288] [2023-02-18 03:44:33,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:33,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:33,835 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:44:33,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [964452885] [2023-02-18 03:44:33,835 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 03:44:33,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:33,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:33,836 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:33,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 03:44:34,038 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 03:44:34,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 03:44:34,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-18 03:44:34,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2167 backedges. 44 proven. 2123 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:34,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 03:44:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 2167 backedges. 44 proven. 1199 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2023-02-18 03:44:34,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:34,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536176288] [2023-02-18 03:44:34,974 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 03:44:34,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964452885] [2023-02-18 03:44:34,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964452885] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 03:44:34,974 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 03:44:34,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 26] total 50 [2023-02-18 03:44:34,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542924105] [2023-02-18 03:44:34,975 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 03:44:34,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-02-18 03:44:34,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:34,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-02-18 03:44:34,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1133, Invalid=1317, Unknown=0, NotChecked=0, Total=2450 [2023-02-18 03:44:34,978 INFO L87 Difference]: Start difference. First operand 256 states and 323 transitions. Second operand has 50 states, 50 states have (on average 5.2) internal successors, (260), 50 states have internal predecessors, (260), 45 states have call successors, (45), 24 states have call predecessors, (45), 23 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-02-18 03:44:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:44:36,321 INFO L93 Difference]: Finished difference Result 528 states and 691 transitions. [2023-02-18 03:44:36,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-02-18 03:44:36,324 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 5.2) internal successors, (260), 50 states have internal predecessors, (260), 45 states have call successors, (45), 24 states have call predecessors, (45), 23 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) Word has length 208 [2023-02-18 03:44:36,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:44:36,327 INFO L225 Difference]: With dead ends: 528 [2023-02-18 03:44:36,327 INFO L226 Difference]: Without dead ends: 520 [2023-02-18 03:44:36,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1288 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=3316, Invalid=5614, Unknown=0, NotChecked=0, Total=8930 [2023-02-18 03:44:36,336 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 1217 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 03:44:36,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 679 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 03:44:36,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2023-02-18 03:44:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 520. [2023-02-18 03:44:36,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 520 states, 424 states have (on average 1.330188679245283) internal successors, (564), 425 states have internal predecessors, (564), 48 states have call successors, (48), 47 states have call predecessors, (48), 47 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-02-18 03:44:36,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 659 transitions. [2023-02-18 03:44:36,441 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 659 transitions. Word has length 208 [2023-02-18 03:44:36,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:44:36,441 INFO L495 AbstractCegarLoop]: Abstraction has 520 states and 659 transitions. [2023-02-18 03:44:36,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 5.2) internal successors, (260), 50 states have internal predecessors, (260), 45 states have call successors, (45), 24 states have call predecessors, (45), 23 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-02-18 03:44:36,442 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 659 transitions. [2023-02-18 03:44:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2023-02-18 03:44:36,448 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:44:36,448 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:44:36,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 03:44:36,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-18 03:44:36,656 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:44:36,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:44:36,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1031888163, now seen corresponding path program 5 times [2023-02-18 03:44:36,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:44:36,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986384008] [2023-02-18 03:44:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:44:36,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:44:36,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:44:36,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1997080012] [2023-02-18 03:44:36,677 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 03:44:36,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:44:36,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:44:36,679 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:44:36,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 03:44:55,902 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-02-18 03:44:55,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 03:44:55,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 95 conjunts are in the unsatisfiable core [2023-02-18 03:44:55,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 03:44:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 9499 backedges. 92 proven. 9407 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 03:44:56,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 03:44:59,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9499 backedges. 92 proven. 5267 refuted. 0 times theorem prover too weak. 4140 trivial. 0 not checked. [2023-02-18 03:44:59,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 03:44:59,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986384008] [2023-02-18 03:44:59,022 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 03:44:59,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997080012] [2023-02-18 03:44:59,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997080012] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 03:44:59,022 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 03:44:59,023 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 50] total 98 [2023-02-18 03:44:59,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460588480] [2023-02-18 03:44:59,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 03:44:59,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2023-02-18 03:44:59,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 03:44:59,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2023-02-18 03:44:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4565, Invalid=4941, Unknown=0, NotChecked=0, Total=9506 [2023-02-18 03:44:59,031 INFO L87 Difference]: Start difference. First operand 520 states and 659 transitions. Second operand has 98 states, 98 states have (on average 5.346938775510204) internal successors, (524), 98 states have internal predecessors, (524), 93 states have call successors, (93), 48 states have call predecessors, (93), 47 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-02-18 03:45:04,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 03:45:04,431 INFO L93 Difference]: Finished difference Result 1056 states and 1387 transitions. [2023-02-18 03:45:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2023-02-18 03:45:04,431 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 5.346938775510204) internal successors, (524), 98 states have internal predecessors, (524), 93 states have call successors, (93), 48 states have call predecessors, (93), 47 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) Word has length 424 [2023-02-18 03:45:04,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 03:45:04,437 INFO L225 Difference]: With dead ends: 1056 [2023-02-18 03:45:04,437 INFO L226 Difference]: Without dead ends: 1048 [2023-02-18 03:45:04,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 939 GetRequests, 750 SyntacticMatches, 0 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5452 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=13540, Invalid=22750, Unknown=0, NotChecked=0, Total=36290 [2023-02-18 03:45:04,446 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 2296 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-18 03:45:04,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 1225 Invalid, 815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-18 03:45:04,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2023-02-18 03:45:04,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1048. [2023-02-18 03:45:04,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 856 states have (on average 1.3317757009345794) internal successors, (1140), 857 states have internal predecessors, (1140), 96 states have call successors, (96), 95 states have call predecessors, (96), 95 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2023-02-18 03:45:04,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1331 transitions. [2023-02-18 03:45:04,596 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1331 transitions. Word has length 424 [2023-02-18 03:45:04,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 03:45:04,597 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1331 transitions. [2023-02-18 03:45:04,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 5.346938775510204) internal successors, (524), 98 states have internal predecessors, (524), 93 states have call successors, (93), 48 states have call predecessors, (93), 47 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2023-02-18 03:45:04,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1331 transitions. [2023-02-18 03:45:04,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2023-02-18 03:45:04,620 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 03:45:04,620 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 03:45:04,640 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-02-18 03:45:04,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-18 03:45:04,836 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 03:45:04,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 03:45:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1549948637, now seen corresponding path program 6 times [2023-02-18 03:45:04,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 03:45:04,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369315608] [2023-02-18 03:45:04,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 03:45:04,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 03:45:04,890 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 03:45:04,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264518107] [2023-02-18 03:45:04,890 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 03:45:04,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 03:45:04,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 03:45:04,891 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 03:45:04,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process