./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound20.i --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/divbin_unwindbound20.i -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 7e073a4c36b82f2b6062e496bb836cd3d16667ec7228f4ab2b6689e74fa81265 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 01:43:35,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 01:43:35,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 01:43:35,048 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 01:43:35,049 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 01:43:35,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 01:43:35,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 01:43:35,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 01:43:35,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 01:43:35,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 01:43:35,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 01:43:35,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 01:43:35,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 01:43:35,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 01:43:35,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 01:43:35,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 01:43:35,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 01:43:35,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 01:43:35,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 01:43:35,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 01:43:35,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 01:43:35,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 01:43:35,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 01:43:35,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 01:43:35,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 01:43:35,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 01:43:35,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 01:43:35,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 01:43:35,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 01:43:35,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 01:43:35,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 01:43:35,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 01:43:35,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 01:43:35,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 01:43:35,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 01:43:35,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 01:43:35,091 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 01:43:35,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 01:43:35,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 01:43:35,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 01:43:35,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 01:43:35,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 01:43:35,123 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 01:43:35,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 01:43:35,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 01:43:35,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 01:43:35,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 01:43:35,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 01:43:35,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 01:43:35,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 01:43:35,126 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 01:43:35,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 01:43:35,126 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 01:43:35,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 01:43:35,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 01:43:35,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 01:43:35,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 01:43:35,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 01:43:35,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 01:43:35,128 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 01:43:35,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 01:43:35,128 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 01:43:35,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 01:43:35,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 01:43:35,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 01:43:35,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 01:43:35,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 01:43:35,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 01:43:35,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 01:43:35,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 01:43:35,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 01:43:35,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 01:43:35,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 01:43:35,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 01:43:35,130 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 01:43:35,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 01:43:35,131 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 01:43:35,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e073a4c36b82f2b6062e496bb836cd3d16667ec7228f4ab2b6689e74fa81265 [2023-02-18 01:43:35,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 01:43:35,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 01:43:35,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 01:43:35,363 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 01:43:35,363 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 01:43:35,364 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound20.i [2023-02-18 01:43:36,541 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 01:43:36,698 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 01:43:36,698 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin_unwindbound20.i [2023-02-18 01:43:36,705 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8cec5ac8/90dc873449494b8c87257ede5e39b54c/FLAG9f5315569 [2023-02-18 01:43:36,723 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8cec5ac8/90dc873449494b8c87257ede5e39b54c [2023-02-18 01:43:36,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 01:43:36,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 01:43:36,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 01:43:36,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 01:43:36,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 01:43:36,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707924b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36, skipping insertion in model container [2023-02-18 01:43:36,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 01:43:36,754 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 01:43:36,850 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/divbin_unwindbound20.i[950,963] [2023-02-18 01:43:36,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 01:43:36,867 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 01:43:36,875 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/divbin_unwindbound20.i[950,963] [2023-02-18 01:43:36,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 01:43:36,889 INFO L208 MainTranslator]: Completed translation [2023-02-18 01:43:36,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36 WrapperNode [2023-02-18 01:43:36,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 01:43:36,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 01:43:36,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 01:43:36,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 01:43:36,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,912 INFO L138 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2023-02-18 01:43:36,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 01:43:36,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 01:43:36,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 01:43:36,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 01:43:36,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,919 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,925 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,927 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 01:43:36,928 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 01:43:36,928 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 01:43:36,928 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 01:43:36,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (1/1) ... [2023-02-18 01:43:36,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 01:43:36,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:43:36,954 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 01:43:36,961 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 01:43:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 01:43:36,994 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 01:43:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 01:43:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 01:43:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 01:43:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 01:43:36,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 01:43:36,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 01:43:37,042 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 01:43:37,043 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 01:43:37,211 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 01:43:37,237 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 01:43:37,237 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 01:43:37,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:43:37 BoogieIcfgContainer [2023-02-18 01:43:37,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 01:43:37,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 01:43:37,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 01:43:37,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 01:43:37,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 01:43:36" (1/3) ... [2023-02-18 01:43:37,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519956f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:43:37, skipping insertion in model container [2023-02-18 01:43:37,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 01:43:36" (2/3) ... [2023-02-18 01:43:37,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519956f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 01:43:37, skipping insertion in model container [2023-02-18 01:43:37,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 01:43:37" (3/3) ... [2023-02-18 01:43:37,245 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound20.i [2023-02-18 01:43:37,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 01:43:37,273 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 01:43:37,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 01:43:37,325 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;@36a2abb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 01:43:37,325 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 01:43:37,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:43:37,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 01:43:37,334 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:43:37,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:43:37,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:43:37,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:43:37,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1267887399, now seen corresponding path program 1 times [2023-02-18 01:43:37,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:43:37,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543133962] [2023-02-18 01:43:37,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:37,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:43:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:43:37,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:43:37,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543133962] [2023-02-18 01:43:37,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 01:43:37,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925755281] [2023-02-18 01:43:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:37,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:43:37,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:43:37,481 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 01:43:37,482 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 01:43:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:43:37,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 01:43:37,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:43:37,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 01:43:37,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:43:37,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925755281] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:43:37,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:43:37,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 01:43:37,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427778939] [2023-02-18 01:43:37,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:43:37,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 01:43:37,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:43:37,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 01:43:37,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 01:43:37,614 INFO L87 Difference]: Start difference. First operand has 28 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 01:43:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:43:37,627 INFO L93 Difference]: Finished difference Result 53 states and 76 transitions. [2023-02-18 01:43:37,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 01:43:37,629 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-18 01:43:37,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:43:37,633 INFO L225 Difference]: With dead ends: 53 [2023-02-18 01:43:37,634 INFO L226 Difference]: Without dead ends: 24 [2023-02-18 01:43:37,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 01:43:37,638 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:43:37,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:43:37,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-18 01:43:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-02-18 01:43:37,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 01:43:37,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2023-02-18 01:43:37,664 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 19 [2023-02-18 01:43:37,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:43:37,664 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2023-02-18 01:43:37,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 01:43:37,665 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2023-02-18 01:43:37,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 01:43:37,667 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:43:37,667 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:43:37,676 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 01:43:37,875 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 01:43:37,876 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:43:37,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:43:37,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1485611193, now seen corresponding path program 1 times [2023-02-18 01:43:37,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:43:37,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022511578] [2023-02-18 01:43:37,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:37,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:43:37,902 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:43:37,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313553759] [2023-02-18 01:43:37,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:37,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:43:37,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:43:37,929 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 01:43:37,930 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 01:43:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:43:37,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 01:43:37,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:43:38,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:43:38,025 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:43:38,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:43:38,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022511578] [2023-02-18 01:43:38,026 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:43:38,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313553759] [2023-02-18 01:43:38,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313553759] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:43:38,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:43:38,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 01:43:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018721956] [2023-02-18 01:43:38,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:43:38,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 01:43:38,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:43:38,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 01:43:38,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 01:43:38,032 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:43:38,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:43:38,061 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2023-02-18 01:43:38,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 01:43:38,061 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-02-18 01:43:38,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:43:38,062 INFO L225 Difference]: With dead ends: 38 [2023-02-18 01:43:38,062 INFO L226 Difference]: Without dead ends: 26 [2023-02-18 01:43:38,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 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 01:43:38,063 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:43:38,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 71 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:43:38,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-18 01:43:38,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-18 01:43:38,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-18 01:43:38,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2023-02-18 01:43:38,070 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 21 [2023-02-18 01:43:38,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:43:38,071 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2023-02-18 01:43:38,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:43:38,071 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2023-02-18 01:43:38,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 01:43:38,072 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:43:38,072 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:43:38,077 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 01:43:38,277 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 01:43:38,278 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:43:38,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:43:38,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1580975129, now seen corresponding path program 1 times [2023-02-18 01:43:38,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:43:38,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859551293] [2023-02-18 01:43:38,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:38,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:43:38,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:43:38,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668313687] [2023-02-18 01:43:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:38,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:43:38,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:43:38,305 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 01:43:38,307 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 01:43:38,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:43:38,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 01:43:38,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:43:38,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:43:38,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:43:38,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:43:38,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859551293] [2023-02-18 01:43:38,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:43:38,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668313687] [2023-02-18 01:43:38,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668313687] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:43:38,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:43:38,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-18 01:43:38,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518450877] [2023-02-18 01:43:38,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:43:38,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 01:43:38,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:43:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 01:43:38,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-02-18 01:43:38,577 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 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 01:43:38,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:43:38,702 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2023-02-18 01:43:38,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 01:43:38,703 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 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 22 [2023-02-18 01:43:38,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:43:38,704 INFO L225 Difference]: With dead ends: 38 [2023-02-18 01:43:38,704 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 01:43:38,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-18 01:43:38,705 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:43:38,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 122 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:43:38,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 01:43:38,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-02-18 01:43:38,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:43:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2023-02-18 01:43:38,711 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 22 [2023-02-18 01:43:38,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:43:38,711 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2023-02-18 01:43:38,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 7 states have internal predecessors, (14), 3 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 01:43:38,712 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2023-02-18 01:43:38,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 01:43:38,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:43:38,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:43:38,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 01:43:38,921 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 01:43:38,922 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:43:38,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:43:38,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1106421036, now seen corresponding path program 1 times [2023-02-18 01:43:38,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:43:38,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769392316] [2023-02-18 01:43:38,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:38,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:43:38,936 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:43:38,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [755043067] [2023-02-18 01:43:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:38,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:43:38,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:43:38,963 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 01:43:38,969 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 01:43:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:43:39,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 01:43:39,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:43:39,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:43:39,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:43:39,066 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:43:39,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:43:39,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769392316] [2023-02-18 01:43:39,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:43:39,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755043067] [2023-02-18 01:43:39,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755043067] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:43:39,076 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:43:39,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-18 01:43:39,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411059456] [2023-02-18 01:43:39,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:43:39,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 01:43:39,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:43:39,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 01:43:39,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-18 01:43:39,078 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 01:43:39,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:43:39,147 INFO L93 Difference]: Finished difference Result 69 states and 88 transitions. [2023-02-18 01:43:39,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 01:43:39,148 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2023-02-18 01:43:39,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:43:39,151 INFO L225 Difference]: With dead ends: 69 [2023-02-18 01:43:39,151 INFO L226 Difference]: Without dead ends: 57 [2023-02-18 01:43:39,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 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 01:43:39,152 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 29 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:43:39,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 139 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:43:39,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-18 01:43:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 43. [2023-02-18 01:43:39,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 35 states have internal predecessors, (43), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:43:39,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2023-02-18 01:43:39,160 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2023-02-18 01:43:39,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:43:39,161 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2023-02-18 01:43:39,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 01:43:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2023-02-18 01:43:39,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 01:43:39,162 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:43:39,162 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:43:39,167 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 01:43:39,367 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 01:43:39,368 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:43:39,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:43:39,368 INFO L85 PathProgramCache]: Analyzing trace with hash -450968108, now seen corresponding path program 1 times [2023-02-18 01:43:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:43:39,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957106422] [2023-02-18 01:43:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:39,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:43:39,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:43:39,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697351019] [2023-02-18 01:43:39,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:39,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:43:39,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:43:39,388 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 01:43:39,391 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 01:43:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:43:39,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 01:43:39,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:43:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-18 01:43:39,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:43:39,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:43:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957106422] [2023-02-18 01:43:39,442 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:43:39,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697351019] [2023-02-18 01:43:39,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697351019] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:43:39,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:43:39,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 01:43:39,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100347826] [2023-02-18 01:43:39,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:43:39,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 01:43:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:43:39,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 01:43:39,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 01:43:39,444 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:43:39,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:43:39,475 INFO L93 Difference]: Finished difference Result 55 states and 67 transitions. [2023-02-18 01:43:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 01:43:39,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-02-18 01:43:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:43:39,476 INFO L225 Difference]: With dead ends: 55 [2023-02-18 01:43:39,477 INFO L226 Difference]: Without dead ends: 52 [2023-02-18 01:43:39,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 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 01:43:39,478 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:43:39,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 81 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:43:39,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-18 01:43:39,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2023-02-18 01:43:39,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 36 states have internal predecessors, (45), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:43:39,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2023-02-18 01:43:39,484 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 25 [2023-02-18 01:43:39,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:43:39,484 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2023-02-18 01:43:39,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 01:43:39,484 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2023-02-18 01:43:39,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 01:43:39,485 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:43:39,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:43:39,492 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 01:43:39,690 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 01:43:39,691 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:43:39,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:43:39,692 INFO L85 PathProgramCache]: Analyzing trace with hash -791365823, now seen corresponding path program 1 times [2023-02-18 01:43:39,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:43:39,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750230396] [2023-02-18 01:43:39,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:39,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:43:39,701 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:43:39,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1335922461] [2023-02-18 01:43:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:39,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:43:39,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:43:39,703 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 01:43:39,710 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 01:43:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:43:39,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 01:43:39,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:43:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:43:39,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 01:43:39,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:43:39,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750230396] [2023-02-18 01:43:39,776 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:43:39,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335922461] [2023-02-18 01:43:39,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335922461] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 01:43:39,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 01:43:39,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 01:43:39,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833201514] [2023-02-18 01:43:39,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 01:43:39,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 01:43:39,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:43:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 01:43:39,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 01:43:39,778 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 01:43:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:43:39,800 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2023-02-18 01:43:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 01:43:39,800 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-02-18 01:43:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:43:39,801 INFO L225 Difference]: With dead ends: 69 [2023-02-18 01:43:39,801 INFO L226 Difference]: Without dead ends: 44 [2023-02-18 01:43:39,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 01:43:39,802 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:43:39,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:43:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-18 01:43:39,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-02-18 01:43:39,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 36 states have internal predecessors, (44), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:43:39,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2023-02-18 01:43:39,809 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 31 [2023-02-18 01:43:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:43:39,809 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2023-02-18 01:43:39,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 01:43:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2023-02-18 01:43:39,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-18 01:43:39,827 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:43:39,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:43:39,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-18 01:43:40,032 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 01:43:40,033 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:43:40,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:43:40,033 INFO L85 PathProgramCache]: Analyzing trace with hash 675416052, now seen corresponding path program 1 times [2023-02-18 01:43:40,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:43:40,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920085010] [2023-02-18 01:43:40,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:40,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:43:40,058 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:43:40,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801916214] [2023-02-18 01:43:40,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:40,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:43:40,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:43:40,085 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 01:43:40,088 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 01:43:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:43:40,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 01:43:40,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:43:40,196 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-18 01:43:40,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:43:41,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:43:41,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920085010] [2023-02-18 01:43:41,082 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:43:41,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801916214] [2023-02-18 01:43:41,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801916214] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 01:43:41,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:43:41,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2023-02-18 01:43:41,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958168630] [2023-02-18 01:43:41,083 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 01:43:41,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 01:43:41,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:43:41,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 01:43:41,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-02-18 01:43:41,086 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 01:43:41,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:43:41,150 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2023-02-18 01:43:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 01:43:41,150 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2023-02-18 01:43:41,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:43:41,151 INFO L225 Difference]: With dead ends: 55 [2023-02-18 01:43:41,151 INFO L226 Difference]: Without dead ends: 52 [2023-02-18 01:43:41,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-02-18 01:43:41,152 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 9 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:43:41,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 102 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:43:41,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-18 01:43:41,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-02-18 01:43:41,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 42 states have internal predecessors, (50), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 01:43:41,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2023-02-18 01:43:41,157 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 34 [2023-02-18 01:43:41,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:43:41,158 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2023-02-18 01:43:41,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 01:43:41,158 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2023-02-18 01:43:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-18 01:43:41,159 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:43:41,159 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:43:41,166 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 01:43:41,367 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 01:43:41,367 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:43:41,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:43:41,368 INFO L85 PathProgramCache]: Analyzing trace with hash 886516180, now seen corresponding path program 2 times [2023-02-18 01:43:41,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:43:41,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346387134] [2023-02-18 01:43:41,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:41,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:43:41,390 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:43:41,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709471028] [2023-02-18 01:43:41,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 01:43:41,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:43:41,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:43:41,403 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 01:43:41,414 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 01:43:41,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 01:43:41,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 01:43:41,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-18 01:43:41,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:43:51,482 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 01:43:51,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:43:51,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:43:51,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346387134] [2023-02-18 01:43:51,710 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:43:51,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709471028] [2023-02-18 01:43:51,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709471028] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 01:43:51,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:43:51,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-02-18 01:43:51,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530657546] [2023-02-18 01:43:51,711 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 01:43:51,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 01:43:51,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:43:51,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 01:43:51,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-02-18 01:43:51,712 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:43:51,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:43:51,841 INFO L93 Difference]: Finished difference Result 90 states and 106 transitions. [2023-02-18 01:43:51,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 01:43:51,841 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 43 [2023-02-18 01:43:51,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:43:51,842 INFO L225 Difference]: With dead ends: 90 [2023-02-18 01:43:51,842 INFO L226 Difference]: Without dead ends: 52 [2023-02-18 01:43:51,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-02-18 01:43:51,843 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 28 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:43:51,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 133 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:43:51,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-18 01:43:51,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-02-18 01:43:51,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 42 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 01:43:51,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2023-02-18 01:43:51,847 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 43 [2023-02-18 01:43:51,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:43:51,847 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2023-02-18 01:43:51,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 9 states have internal predecessors, (28), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:43:51,847 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2023-02-18 01:43:51,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-18 01:43:51,848 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:43:51,848 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:43:51,856 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 01:43:52,055 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 01:43:52,057 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:43:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:43:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash -2006317561, now seen corresponding path program 3 times [2023-02-18 01:43:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:43:52,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771582930] [2023-02-18 01:43:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:43:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:43:52,066 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:43:52,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550517418] [2023-02-18 01:43:52,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 01:43:52,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:43:52,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:43:52,068 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 01:43:52,070 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 01:44:06,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 01:44:06,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 01:44:06,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 47 conjunts are in the unsatisfiable core [2023-02-18 01:44:06,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:44:14,878 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 01:44:14,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:44:42,936 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse45 (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296))) (let ((.cse0 (= (mod |c_ULTIMATE.start_main_~b~0#1| 2) 0)) (.cse25 (div .cse45 2)) (.cse83 (< .cse45 0))) (let ((.cse3 (not .cse83)) (.cse2 (* 2 .cse25 |c_ULTIMATE.start_main_~q~0#1|)) (.cse27 (and (not .cse0) .cse83)) (.cse22 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse12 (* 4294967295 .cse25)) (.cse21 (mod |c_ULTIMATE.start_main_~B~0#1| 4294967296))) (and (or .cse0 (not (= .cse1 (mod (+ |c_ULTIMATE.start_main_~r~0#1| .cse2 (* 2 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296))) .cse3 (forall ((|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647_165| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120| Int) (|aux_div_v_ULTIMATE.start_main_~b~0#1_33_50| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| Int)) (let ((.cse24 (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| (- 4294967296)))) (let ((.cse18 (+ (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72| (- 4294967296)) .cse24 (* (- 8589934592) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647|) (* (- 8589934592) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306|) (* |aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61| (- 4294967296)) .cse25 (* |aux_div_v_ULTIMATE.start_main_~b~0#1_33_50| (- 4294967296)) 1 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647_165| (- 4294967296))))) (let ((.cse17 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647_165| 4294967296) .cse18)) (.cse23 (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| 4294967296))) (let ((.cse11 (+ .cse17 (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|) (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132|) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| (- 2)) .cse23 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| 8589934592)))) (let ((.cse10 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| 2) .cse11))) (let ((.cse5 (+ (* 2 |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|) .cse10)) (.cse20 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| 2))) (let ((.cse9 (+ .cse5 .cse20))) (let ((.cse4 (+ .cse24 .cse9 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| (- 4294967296)) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| 8589934592)))) (let ((.cse8 (+ .cse4 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| 4294967296)))) (let ((.cse7 (+ .cse8 .cse23))) (let ((.cse19 (+ (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72| 4294967296) .cse7))) (let ((.cse14 (* (- 2147483648) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94|)) (.cse15 (* (- 2147483648) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83|)) (.cse16 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| 4294967296)) (.cse13 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| 2147483648)) (.cse6 (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61| 4294967296) .cse19))) (or (> 0 .cse4) (> 0 .cse5) (>= .cse6 4294967296) (>= .cse7 4294967296) (>= .cse8 4294967296) (> 0 .cse7) (> 0 .cse9) (> 0 .cse8) (>= .cse9 8589934592) (>= .cse10 2) (>= .cse11 2) (< (* (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306|) 4294967296) (+ (* (- 1) (mod (+ 4294967295 |c_ULTIMATE.start_main_~r~0#1| .cse12) 4294967296)) (+ .cse13 (+ .cse14 .cse15 .cse16 (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|))))) (> 0 .cse17) (>= .cse18 4294967296) (>= .cse5 2) (< .cse16 (+ (- 4294967295) (+ (+ (+ .cse14 (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|)) .cse15 .cse16) .cse13) (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| 2147483648)))) (>= .cse17 8589934592) (>= .cse19 4294967296) (= (mod (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| 4 |c_ULTIMATE.start_main_~q~0#1|) .cse20 4294967295 |c_ULTIMATE.start_main_~r~0#1| .cse12) 4294967296) .cse1) (> 0 .cse19) (>= .cse4 4294967296) (= .cse6 .cse21) (> 0 .cse11) (> 0 .cse18) (not (>= .cse22 .cse19)) (> 0 .cse10) (> 0 .cse6)))))))))))))))) (or (and (let ((.cse26 (div .cse45 4))) (or (not (= (mod .cse25 2) 0)) (not (= (mod (+ (* .cse26 4 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse1)) .cse27 (forall ((|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120| Int) (|aux_div_v_ULTIMATE.start_main_~b~0#1_33_50| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| Int)) (let ((.cse39 (* (- 2147483648) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83|))) (let ((.cse32 (+ (* 2 (+ .cse26 (* (- 2147483648) |aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61|) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| (- 4294967296)) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| (- 4294967296)) (* (- 2147483648) |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72|) .cse39 (* |aux_div_v_ULTIMATE.start_main_~b~0#1_33_50| (- 2147483648)))) 0)) (.cse44 (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| 4294967296))) (let ((.cse31 (+ (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|) (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132|) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| (- 2)) .cse32 .cse44 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| 8589934592)))) (let ((.cse34 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| 2) .cse31))) (let ((.cse29 (+ (* 2 |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|) .cse34)) (.cse43 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| 2))) (let ((.cse28 (+ .cse29 .cse43))) (let ((.cse35 (+ .cse28 (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| (- 4294967296)) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| (- 4294967296)) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| 8589934592)))) (let ((.cse42 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| 4294967296) .cse35))) (let ((.cse30 (+ .cse44 .cse42))) (let ((.cse33 (+ (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72| 4294967296) .cse30))) (let ((.cse40 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| 2147483648)) (.cse38 (* (- 2147483648) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94|)) (.cse37 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| 4294967296)) (.cse36 (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61| 4294967296) .cse33)) (.cse41 (* .cse26 4294967294))) (or (> 0 .cse28) (> 0 .cse29) (>= .cse30 4294967296) (>= .cse29 2) (>= .cse31 2) (>= .cse32 8589934592) (> 0 .cse31) (> 0 .cse32) (>= .cse33 4294967296) (not (>= .cse22 .cse33)) (>= .cse28 8589934592) (> 0 .cse34) (> 0 .cse35) (>= .cse36 4294967296) (> 0 .cse30) (< .cse37 (+ (- 4294967295) (+ (+ (+ .cse38 (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|)) .cse39 .cse37) .cse40) (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| 2147483648)))) (< (* (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306|) 4294967296) (+ (* (- 1) (mod (+ |c_ULTIMATE.start_main_~r~0#1| .cse41) 4294967296)) (+ .cse40 (+ .cse38 .cse39 .cse37 (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|))))) (>= .cse42 4294967296) (>= .cse35 4294967296) (= .cse36 .cse21) (>= .cse34 2) (> 0 .cse36) (> 0 .cse42) (= (mod (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| 4 |c_ULTIMATE.start_main_~q~0#1|) .cse43 |c_ULTIMATE.start_main_~r~0#1| .cse41) 4294967296) .cse1) (> 0 .cse33)))))))))))))))) (let ((.cse47 (+ .cse25 1))) (let ((.cse46 (div .cse47 2))) (or (not (= (mod (+ (* .cse46 4 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse1)) (not (= (mod .cse47 2) 0)) .cse0 .cse3 (forall ((|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120| Int) (|aux_div_v_ULTIMATE.start_main_~b~0#1_33_50| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| Int)) (let ((.cse59 (* (- 2147483648) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83|))) (let ((.cse48 (+ (* (+ .cse46 (* (- 2147483648) |aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61|) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| (- 4294967296)) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| (- 4294967296)) (* (- 2147483648) |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72|) .cse59 (* |aux_div_v_ULTIMATE.start_main_~b~0#1_33_50| (- 2147483648))) 2) 0)) (.cse64 (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| 4294967296))) (let ((.cse50 (+ (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|) (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132|) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| (- 2)) .cse48 .cse64 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| 8589934592)))) (let ((.cse55 (+ .cse50 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| 2)))) (let ((.cse54 (+ .cse55 (* 2 |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|))) (.cse62 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| 2))) (let ((.cse52 (+ .cse54 .cse62))) (let ((.cse49 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| (- 4294967296)) .cse52 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| (- 4294967296)) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| 8589934592)))) (let ((.cse63 (+ .cse49 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| 4294967296)))) (let ((.cse56 (+ .cse63 .cse64))) (let ((.cse53 (+ .cse56 (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72| 4294967296)))) (let ((.cse60 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| 2147483648)) (.cse58 (* (- 2147483648) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94|)) (.cse57 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| 4294967296)) (.cse61 (* .cse46 4294967294)) (.cse51 (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61| 4294967296) .cse53))) (or (>= .cse48 8589934592) (> 0 .cse49) (> 0 .cse48) (>= .cse49 4294967296) (>= .cse50 2) (> 0 .cse51) (> 0 .cse52) (> 0 .cse53) (>= .cse52 8589934592) (>= .cse54 2) (>= .cse55 2) (>= .cse56 4294967296) (> 0 .cse54) (>= .cse53 4294967296) (> 0 .cse55) (< .cse57 (+ (- 4294967295) (+ (+ (+ .cse58 (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|)) .cse59 .cse57) .cse60) (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| 2147483648)))) (= .cse21 .cse51) (< (* (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306|) 4294967296) (+ (+ .cse60 (+ .cse58 .cse59 .cse57 (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|))) (* (- 1) (mod (+ .cse61 |c_ULTIMATE.start_main_~r~0#1|) 4294967296)))) (not (>= .cse22 .cse53)) (= (mod (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| 4 |c_ULTIMATE.start_main_~q~0#1|) .cse61 .cse62 |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse1) (>= .cse51 4294967296) (>= .cse63 4294967296) (> 0 .cse56) (> 0 .cse63) (> 0 .cse50)))))))))))))))))) (>= 0 2)) (or (not (= (mod (+ |c_ULTIMATE.start_main_~r~0#1| .cse2) 4294967296) .cse1)) .cse27 (forall ((|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647_165| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120| Int) (|aux_div_v_ULTIMATE.start_main_~b~0#1_33_50| Int) (|aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| Int)) (let ((.cse82 (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| (- 4294967296)))) (let ((.cse79 (+ (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72| (- 4294967296)) .cse82 (* (- 8589934592) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647|) (* (- 8589934592) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306|) (* |aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61| (- 4294967296)) .cse25 (* |aux_div_v_ULTIMATE.start_main_~b~0#1_33_50| (- 4294967296)) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647_165| (- 4294967296))))) (let ((.cse74 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647_165| 4294967296) .cse79)) (.cse81 (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| 4294967296))) (let ((.cse78 (+ (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|) (* (- 2) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132|) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| (- 2)) .cse74 .cse81 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| 8589934592)))) (let ((.cse66 (+ .cse78 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| 2)))) (let ((.cse77 (+ .cse66 (* 2 |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|))) (.cse80 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| 2))) (let ((.cse69 (+ .cse77 .cse80))) (let ((.cse65 (+ .cse82 .cse69 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| (- 4294967296)) (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| 8589934592)))) (let ((.cse76 (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| 4294967296) .cse65))) (let ((.cse75 (+ .cse76 .cse81))) (let ((.cse68 (+ (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72| 4294967296) .cse75))) (let ((.cse71 (* (- 2147483648) |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94|)) (.cse72 (* (- 2147483648) |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83|)) (.cse73 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306| 4294967296)) (.cse70 (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94| 2147483648)) (.cse67 (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61| 4294967296) .cse68))) (or (>= .cse65 4294967296) (> 0 .cse66) (> 0 .cse67) (> 0 .cse68) (>= .cse66 2) (>= .cse69 8589934592) (< (* (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132_647| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306|) 4294967296) (+ (* (- 1) (mod (+ |c_ULTIMATE.start_main_~r~0#1| .cse12) 4294967296)) (+ .cse70 (+ .cse71 .cse72 .cse73 (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|))))) (> 0 .cse74) (>= .cse75 4294967296) (>= .cse76 4294967296) (> 0 .cse77) (> 0 .cse65) (< .cse73 (+ (- 4294967295) (+ (+ (+ .cse71 (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| (+ |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120_132| |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108_120|)) .cse72 .cse73) .cse70) (* |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83| 2147483648)))) (> 0 .cse78) (>= .cse78 2) (> 0 .cse76) (>= .cse67 4294967296) (not (>= .cse22 .cse68)) (> 0 .cse69) (>= .cse77 2) (>= .cse68 4294967296) (>= .cse79 4294967296) (> 0 .cse79) (> 0 .cse75) (= .cse1 (mod (+ (* |aux_div_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~b~0#1_33_50_61_72_83_94_306_108| 4 |c_ULTIMATE.start_main_~q~0#1|) .cse80 |c_ULTIMATE.start_main_~r~0#1| .cse12) 4294967296)) (>= .cse74 8589934592) (= .cse21 .cse67)))))))))))))))))))) is different from true [2023-02-18 01:44:43,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:44:43,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771582930] [2023-02-18 01:44:43,460 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:44:43,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550517418] [2023-02-18 01:44:43,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550517418] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 01:44:43,461 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:44:43,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-02-18 01:44:43,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90598647] [2023-02-18 01:44:43,461 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 01:44:43,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-18 01:44:43,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:44:43,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-18 01:44:43,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=4, NotChecked=44, Total=600 [2023-02-18 01:44:43,463 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-18 01:44:52,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:44:53,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:44:55,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:44:57,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:44:59,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:45:01,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:45:03,042 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:45:04,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:45:06,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:45:08,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:45:09,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:45:11,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:45:14,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:45:16,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:45:16,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:45:16,762 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2023-02-18 01:45:16,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-18 01:45:16,762 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 46 [2023-02-18 01:45:16,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:45:16,764 INFO L225 Difference]: With dead ends: 90 [2023-02-18 01:45:16,764 INFO L226 Difference]: Without dead ends: 86 [2023-02-18 01:45:16,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=4, NotChecked=54, Total=870 [2023-02-18 01:45:16,765 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 38 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 14 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2023-02-18 01:45:16,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 334 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 431 Invalid, 5 Unknown, 0 Unchecked, 27.4s Time] [2023-02-18 01:45:16,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-18 01:45:16,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2023-02-18 01:45:16,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.1515151515151516) internal successors, (76), 69 states have internal predecessors, (76), 11 states have call successors, (11), 8 states have call predecessors, (11), 7 states have return successors, (10), 7 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 01:45:16,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2023-02-18 01:45:16,773 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 46 [2023-02-18 01:45:16,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:45:16,773 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2023-02-18 01:45:16,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-18 01:45:16,774 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2023-02-18 01:45:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-18 01:45:16,777 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:45:16,777 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:45:16,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-18 01:45:16,977 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 01:45:16,978 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:45:16,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:45:16,978 INFO L85 PathProgramCache]: Analyzing trace with hash 397465844, now seen corresponding path program 4 times [2023-02-18 01:45:16,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:45:16,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563531493] [2023-02-18 01:45:16,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:45:16,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:45:16,994 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:45:16,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359916317] [2023-02-18 01:45:16,994 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 01:45:16,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:45:16,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:45:17,018 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 01:45:17,020 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 01:45:19,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 01:45:19,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 01:45:19,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-18 01:45:19,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:45:27,769 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 01:45:27,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:45:44,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:45:44,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563531493] [2023-02-18 01:45:44,608 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:45:44,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359916317] [2023-02-18 01:45:44,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359916317] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 01:45:44,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:45:44,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-02-18 01:45:44,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110424402] [2023-02-18 01:45:44,609 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 01:45:44,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-18 01:45:44,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:45:44,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-18 01:45:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=446, Unknown=3, NotChecked=0, Total=552 [2023-02-18 01:45:44,617 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:45:59,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:01,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:03,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:05,488 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:07,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:09,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:11,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:13,154 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:15,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:16,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:18,813 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:20,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:22,107 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:23,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:25,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:27,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:46:29,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:46:31,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:46:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:46:32,857 INFO L93 Difference]: Finished difference Result 127 states and 146 transitions. [2023-02-18 01:46:32,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-18 01:46:32,858 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 49 [2023-02-18 01:46:32,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:46:32,858 INFO L225 Difference]: With dead ends: 127 [2023-02-18 01:46:32,859 INFO L226 Difference]: Without dead ends: 125 [2023-02-18 01:46:32,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 28.5s TimeCoverageRelationStatistics Valid=129, Invalid=621, Unknown=6, NotChecked=0, Total=756 [2023-02-18 01:46:32,859 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 38 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 9 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.2s IncrementalHoareTripleChecker+Time [2023-02-18 01:46:32,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 376 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 436 Invalid, 12 Unknown, 0 Unchecked, 37.2s Time] [2023-02-18 01:46:32,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-18 01:46:32,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 106. [2023-02-18 01:46:32,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 86 states have internal predecessors, (97), 13 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 01:46:32,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2023-02-18 01:46:32,875 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 49 [2023-02-18 01:46:32,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:46:32,875 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2023-02-18 01:46:32,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.125) internal successors, (34), 14 states have internal predecessors, (34), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:46:32,875 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2023-02-18 01:46:32,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-18 01:46:32,880 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:46:32,880 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:46:32,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-02-18 01:46:33,086 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 01:46:33,086 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:46:33,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:46:33,087 INFO L85 PathProgramCache]: Analyzing trace with hash 395678384, now seen corresponding path program 1 times [2023-02-18 01:46:33,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:46:33,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423435328] [2023-02-18 01:46:33,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:46:33,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:46:33,095 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:46:33,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783809251] [2023-02-18 01:46:33,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:46:33,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:46:33,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:46:33,097 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 01:46:33,099 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 01:46:33,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:46:33,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 01:46:33,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:46:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 01:46:33,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:46:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 01:46:33,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:46:33,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423435328] [2023-02-18 01:46:33,252 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:46:33,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783809251] [2023-02-18 01:46:33,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783809251] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:46:33,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:46:33,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-02-18 01:46:33,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657035465] [2023-02-18 01:46:33,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:46:33,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 01:46:33,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:46:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 01:46:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2023-02-18 01:46:33,254 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 7 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-18 01:46:33,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:46:33,447 INFO L93 Difference]: Finished difference Result 394 states and 458 transitions. [2023-02-18 01:46:33,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-02-18 01:46:33,448 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 7 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) Word has length 49 [2023-02-18 01:46:33,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:46:33,450 INFO L225 Difference]: With dead ends: 394 [2023-02-18 01:46:33,451 INFO L226 Difference]: Without dead ends: 387 [2023-02-18 01:46:33,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=259, Invalid=497, Unknown=0, NotChecked=0, Total=756 [2023-02-18 01:46:33,452 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 185 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 01:46:33,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 294 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 01:46:33,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2023-02-18 01:46:33,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 337. [2023-02-18 01:46:33,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 260 states have (on average 1.226923076923077) internal successors, (319), 269 states have internal predecessors, (319), 43 states have call successors, (43), 34 states have call predecessors, (43), 33 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-02-18 01:46:33,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 396 transitions. [2023-02-18 01:46:33,489 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 396 transitions. Word has length 49 [2023-02-18 01:46:33,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:46:33,490 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 396 transitions. [2023-02-18 01:46:33,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 18 states have internal predecessors, (68), 7 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-18 01:46:33,490 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 396 transitions. [2023-02-18 01:46:33,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-02-18 01:46:33,492 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:46:33,492 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:46:33,497 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 01:46:33,697 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 01:46:33,697 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:46:33,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:46:33,698 INFO L85 PathProgramCache]: Analyzing trace with hash -2122494090, now seen corresponding path program 1 times [2023-02-18 01:46:33,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:46:33,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81692837] [2023-02-18 01:46:33,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:46:33,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:46:33,708 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:46:33,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638840738] [2023-02-18 01:46:33,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:46:33,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:46:33,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:46:33,710 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 01:46:33,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 01:46:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:46:37,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-18 01:46:37,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:47:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-18 01:47:13,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:47:37,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:47:37,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81692837] [2023-02-18 01:47:37,573 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:47:37,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638840738] [2023-02-18 01:47:37,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638840738] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 01:47:37,573 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:47:37,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-02-18 01:47:37,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159035560] [2023-02-18 01:47:37,574 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 01:47:37,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 01:47:37,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:47:37,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 01:47:37,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=447, Unknown=5, NotChecked=0, Total=552 [2023-02-18 01:47:37,575 INFO L87 Difference]: Start difference. First operand 337 states and 396 transitions. Second operand has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:47:40,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:47:44,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:47:56,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:47:58,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:48:00,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:48:01,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:48:05,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:48:07,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:48:19,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:48:21,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:48:23,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:48:26,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:48:26,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:48:26,383 INFO L93 Difference]: Finished difference Result 356 states and 418 transitions. [2023-02-18 01:48:26,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-18 01:48:26,384 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 49 [2023-02-18 01:48:26,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:48:26,386 INFO L225 Difference]: With dead ends: 356 [2023-02-18 01:48:26,386 INFO L226 Difference]: Without dead ends: 351 [2023-02-18 01:48:26,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 47.7s TimeCoverageRelationStatistics Valid=125, Invalid=624, Unknown=7, NotChecked=0, Total=756 [2023-02-18 01:48:26,387 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 48 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 11 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2023-02-18 01:48:26,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 376 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 560 Invalid, 9 Unknown, 0 Unchecked, 31.6s Time] [2023-02-18 01:48:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2023-02-18 01:48:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 337. [2023-02-18 01:48:26,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 260 states have (on average 1.226923076923077) internal successors, (319), 269 states have internal predecessors, (319), 43 states have call successors, (43), 34 states have call predecessors, (43), 33 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2023-02-18 01:48:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 396 transitions. [2023-02-18 01:48:26,451 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 396 transitions. Word has length 49 [2023-02-18 01:48:26,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:48:26,451 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 396 transitions. [2023-02-18 01:48:26,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.176470588235294) internal successors, (37), 15 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:48:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 396 transitions. [2023-02-18 01:48:26,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-18 01:48:26,452 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:48:26,452 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:48:26,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-02-18 01:48:26,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-18 01:48:26,659 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:48:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:48:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash 2114127183, now seen corresponding path program 1 times [2023-02-18 01:48:26,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:48:26,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565933530] [2023-02-18 01:48:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:48:26,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:48:26,668 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:48:26,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877584197] [2023-02-18 01:48:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:48:26,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:48:26,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:48:26,670 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:48:26,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 01:48:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:48:26,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 01:48:26,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:48:26,736 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-18 01:48:26,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:48:26,761 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-18 01:48:26,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:48:26,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565933530] [2023-02-18 01:48:26,762 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:48:26,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877584197] [2023-02-18 01:48:26,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877584197] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:48:26,762 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:48:26,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2023-02-18 01:48:26,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502062304] [2023-02-18 01:48:26,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:48:26,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 01:48:26,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:48:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 01:48:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-02-18 01:48:26,764 INFO L87 Difference]: Start difference. First operand 337 states and 396 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 01:48:27,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:48:27,255 INFO L93 Difference]: Finished difference Result 374 states and 431 transitions. [2023-02-18 01:48:27,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 01:48:27,256 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 52 [2023-02-18 01:48:27,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:48:27,259 INFO L225 Difference]: With dead ends: 374 [2023-02-18 01:48:27,259 INFO L226 Difference]: Without dead ends: 327 [2023-02-18 01:48:27,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-02-18 01:48:27,260 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 01:48:27,261 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 127 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 01:48:27,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2023-02-18 01:48:27,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 304. [2023-02-18 01:48:27,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 239 states have (on average 1.205020920502092) internal successors, (288), 248 states have internal predecessors, (288), 33 states have call successors, (33), 31 states have call predecessors, (33), 31 states have return successors, (32), 24 states have call predecessors, (32), 32 states have call successors, (32) [2023-02-18 01:48:27,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 353 transitions. [2023-02-18 01:48:27,294 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 353 transitions. Word has length 52 [2023-02-18 01:48:27,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:48:27,294 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 353 transitions. [2023-02-18 01:48:27,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 01:48:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 353 transitions. [2023-02-18 01:48:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-02-18 01:48:27,295 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:48:27,295 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:48:27,302 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-18 01:48:27,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-18 01:48:27,503 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:48:27,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:48:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1797561273, now seen corresponding path program 1 times [2023-02-18 01:48:27,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:48:27,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937777597] [2023-02-18 01:48:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:48:27,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:48:27,511 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:48:27,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939629077] [2023-02-18 01:48:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:48:27,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:48:27,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:48:27,513 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:48:27,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 01:48:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 01:48:27,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 01:48:27,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:48:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-02-18 01:48:27,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:48:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-18 01:48:27,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:48:27,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937777597] [2023-02-18 01:48:27,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:48:27,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939629077] [2023-02-18 01:48:27,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939629077] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 01:48:27,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 01:48:27,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-18 01:48:27,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110157696] [2023-02-18 01:48:27,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 01:48:27,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 01:48:27,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:48:27,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 01:48:27,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-18 01:48:27,609 INFO L87 Difference]: Start difference. First operand 304 states and 353 transitions. Second operand has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 01:48:27,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:48:27,718 INFO L93 Difference]: Finished difference Result 508 states and 577 transitions. [2023-02-18 01:48:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-18 01:48:27,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 51 [2023-02-18 01:48:27,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:48:27,719 INFO L225 Difference]: With dead ends: 508 [2023-02-18 01:48:27,719 INFO L226 Difference]: Without dead ends: 310 [2023-02-18 01:48:27,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 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 01:48:27,720 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 103 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 01:48:27,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 167 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 01:48:27,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-02-18 01:48:27,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 304. [2023-02-18 01:48:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 239 states have (on average 1.1799163179916319) internal successors, (282), 248 states have internal predecessors, (282), 33 states have call successors, (33), 31 states have call predecessors, (33), 31 states have return successors, (32), 24 states have call predecessors, (32), 32 states have call successors, (32) [2023-02-18 01:48:27,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 347 transitions. [2023-02-18 01:48:27,759 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 347 transitions. Word has length 51 [2023-02-18 01:48:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:48:27,759 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 347 transitions. [2023-02-18 01:48:27,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 01:48:27,760 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 347 transitions. [2023-02-18 01:48:27,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-18 01:48:27,760 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:48:27,760 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:48:27,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-18 01:48:27,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:48:27,962 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:48:27,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:48:27,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1519157991, now seen corresponding path program 5 times [2023-02-18 01:48:27,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:48:27,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997433858] [2023-02-18 01:48:27,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:48:27,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:48:27,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:48:27,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76313465] [2023-02-18 01:48:27,972 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 01:48:27,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:48:27,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:48:27,973 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:48:27,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 01:54:54,732 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-02-18 01:54:54,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 01:54:54,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-18 01:54:54,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 01:55:13,039 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 3 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-18 01:55:13,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 01:55:39,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 01:55:39,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997433858] [2023-02-18 01:55:39,911 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 01:55:39,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76313465] [2023-02-18 01:55:39,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76313465] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 01:55:39,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 01:55:39,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2023-02-18 01:55:39,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729866674] [2023-02-18 01:55:39,911 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 01:55:39,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-18 01:55:39,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 01:55:39,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-18 01:55:39,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=566, Unknown=12, NotChecked=0, Total=702 [2023-02-18 01:55:39,912 INFO L87 Difference]: Start difference. First operand 304 states and 347 transitions. Second operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:55:43,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-18 01:56:12,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:56:16,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [0] [2023-02-18 01:56:18,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:56:21,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 01:56:21,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 01:56:21,433 INFO L93 Difference]: Finished difference Result 344 states and 390 transitions. [2023-02-18 01:56:21,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 01:56:21,433 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 52 [2023-02-18 01:56:21,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 01:56:21,437 INFO L225 Difference]: With dead ends: 344 [2023-02-18 01:56:21,437 INFO L226 Difference]: Without dead ends: 342 [2023-02-18 01:56:21,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 69.1s TimeCoverageRelationStatistics Valid=161, Invalid=811, Unknown=20, NotChecked=0, Total=992 [2023-02-18 01:56:21,447 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 45 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 13 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2023-02-18 01:56:21,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 494 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 629 Invalid, 3 Unknown, 0 Unchecked, 15.7s Time] [2023-02-18 01:56:21,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2023-02-18 01:56:21,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 322. [2023-02-18 01:56:21,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 253 states have (on average 1.1778656126482214) internal successors, (298), 262 states have internal predecessors, (298), 35 states have call successors, (35), 33 states have call predecessors, (35), 33 states have return successors, (34), 26 states have call predecessors, (34), 34 states have call successors, (34) [2023-02-18 01:56:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 367 transitions. [2023-02-18 01:56:21,500 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 367 transitions. Word has length 52 [2023-02-18 01:56:21,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 01:56:21,500 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 367 transitions. [2023-02-18 01:56:21,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 17 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 01:56:21,500 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 367 transitions. [2023-02-18 01:56:21,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-18 01:56:21,501 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 01:56:21,502 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 01:56:21,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-18 01:56:21,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-18 01:56:21,703 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 01:56:21,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 01:56:21,704 INFO L85 PathProgramCache]: Analyzing trace with hash 272650529, now seen corresponding path program 6 times [2023-02-18 01:56:21,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 01:56:21,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388016343] [2023-02-18 01:56:21,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 01:56:21,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 01:56:21,720 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 01:56:21,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2033232708] [2023-02-18 01:56:21,720 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 01:56:21,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 01:56:21,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 01:56:21,724 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 01:56:21,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 01:56:29,782 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-02-18 01:56:29,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 01:56:29,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-18 01:56:29,788 INFO L286 TraceCheckSpWp]: Computing forward predicates...