./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/egcd2-ll_unwindbound100.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 30672bd579b7f25ffa685cb80d8a419cb542781c19afe0226ba5d9d3cf26984c --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 17:14:22,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 17:14:22,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 17:14:22,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 17:14:22,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 17:14:22,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 17:14:22,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 17:14:22,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 17:14:22,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 17:14:22,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 17:14:22,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 17:14:22,076 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 17:14:22,076 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 17:14:22,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 17:14:22,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 17:14:22,079 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 17:14:22,080 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 17:14:22,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 17:14:22,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 17:14:22,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 17:14:22,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 17:14:22,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 17:14:22,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 17:14:22,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 17:14:22,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 17:14:22,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 17:14:22,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 17:14:22,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 17:14:22,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 17:14:22,093 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 17:14:22,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 17:14:22,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 17:14:22,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 17:14:22,095 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 17:14:22,096 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 17:14:22,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 17:14:22,097 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 17:14:22,097 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 17:14:22,098 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 17:14:22,098 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 17:14:22,104 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 17:14:22,105 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 17:14:22,132 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 17:14:22,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 17:14:22,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 17:14:22,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 17:14:22,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 17:14:22,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 17:14:22,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 17:14:22,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 17:14:22,136 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 17:14:22,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 17:14:22,137 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 17:14:22,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 17:14:22,138 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 17:14:22,138 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 17:14:22,138 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 17:14:22,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 17:14:22,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 17:14:22,138 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 17:14:22,139 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 17:14:22,139 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 17:14:22,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 17:14:22,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 17:14:22,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 17:14:22,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 17:14:22,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 17:14:22,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 17:14:22,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 17:14:22,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 17:14:22,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 17:14:22,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 17:14:22,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 17:14:22,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 17:14:22,141 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 17:14:22,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 17:14:22,142 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 17:14:22,142 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 30672bd579b7f25ffa685cb80d8a419cb542781c19afe0226ba5d9d3cf26984c [2023-02-18 17:14:22,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 17:14:22,404 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 17:14:22,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 17:14:22,409 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 17:14:22,410 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 17:14:22,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound100.c [2023-02-18 17:14:23,603 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 17:14:23,808 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 17:14:23,808 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound100.c [2023-02-18 17:14:23,815 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c52d9ba3/c716634c707643ddbcc00a6ad0e7b3ba/FLAG87cb11c00 [2023-02-18 17:14:23,827 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c52d9ba3/c716634c707643ddbcc00a6ad0e7b3ba [2023-02-18 17:14:23,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 17:14:23,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 17:14:23,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 17:14:23,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 17:14:23,834 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 17:14:23,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 05:14:23" (1/1) ... [2023-02-18 17:14:23,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21fcaf16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:23, skipping insertion in model container [2023-02-18 17:14:23,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 05:14:23" (1/1) ... [2023-02-18 17:14:23,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 17:14:23,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 17:14:23,979 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/egcd2-ll_unwindbound100.c[490,503] [2023-02-18 17:14:23,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 17:14:24,003 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 17:14:24,013 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/egcd2-ll_unwindbound100.c[490,503] [2023-02-18 17:14:24,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 17:14:24,032 INFO L208 MainTranslator]: Completed translation [2023-02-18 17:14:24,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24 WrapperNode [2023-02-18 17:14:24,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 17:14:24,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 17:14:24,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 17:14:24,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 17:14:24,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,042 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,057 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 84 [2023-02-18 17:14:24,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 17:14:24,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 17:14:24,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 17:14:24,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 17:14:24,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 17:14:24,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 17:14:24,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 17:14:24,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 17:14:24,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (1/1) ... [2023-02-18 17:14:24,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 17:14:24,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:24,108 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 17:14:24,136 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 17:14:24,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 17:14:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-18 17:14:24,154 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-18 17:14:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 17:14:24,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 17:14:24,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 17:14:24,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 17:14:24,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 17:14:24,219 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 17:14:24,221 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 17:14:24,399 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 17:14:24,417 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 17:14:24,417 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 17:14:24,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:14:24 BoogieIcfgContainer [2023-02-18 17:14:24,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 17:14:24,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 17:14:24,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 17:14:24,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 17:14:24,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 05:14:23" (1/3) ... [2023-02-18 17:14:24,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6d1356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 05:14:24, skipping insertion in model container [2023-02-18 17:14:24,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 05:14:24" (2/3) ... [2023-02-18 17:14:24,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6d1356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 05:14:24, skipping insertion in model container [2023-02-18 17:14:24,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 05:14:24" (3/3) ... [2023-02-18 17:14:24,425 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound100.c [2023-02-18 17:14:24,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 17:14:24,477 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 17:14:24,529 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 17:14:24,536 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;@61740305, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 17:14:24,537 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 17:14:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-18 17:14:24,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 17:14:24,547 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:24,548 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:24,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:24,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:24,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1022199732, now seen corresponding path program 1 times [2023-02-18 17:14:24,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:24,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330691165] [2023-02-18 17:14:24,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:24,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:24,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:24,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:24,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330691165] [2023-02-18 17:14:24,676 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 17:14:24,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288633418] [2023-02-18 17:14:24,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:24,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:24,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:24,679 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 17:14:24,683 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 17:14:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:24,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 17:14:24,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:24,765 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-18 17:14:24,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 17:14:24,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288633418] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 17:14:24,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 17:14:24,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 17:14:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422562517] [2023-02-18 17:14:24,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:14:24,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 17:14:24,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:24,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 17:14:24,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 17:14:24,800 INFO L87 Difference]: Start difference. First operand has 34 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 17:14:24,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:24,824 INFO L93 Difference]: Finished difference Result 65 states and 104 transitions. [2023-02-18 17:14:24,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 17:14:24,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2023-02-18 17:14:24,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:24,835 INFO L225 Difference]: With dead ends: 65 [2023-02-18 17:14:24,835 INFO L226 Difference]: Without dead ends: 30 [2023-02-18 17:14:24,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 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 17:14:24,843 INFO L413 NwaCegarLoop]: 45 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, 45 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 17:14:24,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 17:14:24,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-18 17:14:24,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-18 17:14:24,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 19 states have internal predecessors, (22), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 17:14:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 41 transitions. [2023-02-18 17:14:24,900 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 41 transitions. Word has length 28 [2023-02-18 17:14:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:24,900 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 41 transitions. [2023-02-18 17:14:24,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 17:14:24,904 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 41 transitions. [2023-02-18 17:14:24,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 17:14:24,907 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:24,907 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:24,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 17:14:25,117 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 17:14:25,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:25,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:25,118 INFO L85 PathProgramCache]: Analyzing trace with hash -455220980, now seen corresponding path program 1 times [2023-02-18 17:14:25,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:25,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281682765] [2023-02-18 17:14:25,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:25,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:25,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:25,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178488581] [2023-02-18 17:14:25,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:25,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:25,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:25,148 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 17:14:25,151 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 17:14:25,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:25,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 17:14:25,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:25,256 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 17:14:25,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 17:14:25,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:25,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281682765] [2023-02-18 17:14:25,259 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:25,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178488581] [2023-02-18 17:14:25,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178488581] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 17:14:25,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 17:14:25,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 17:14:25,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817414916] [2023-02-18 17:14:25,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:14:25,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 17:14:25,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:25,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 17:14:25,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 17:14:25,267 INFO L87 Difference]: Start difference. First operand 30 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 17:14:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:25,284 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2023-02-18 17:14:25,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 17:14:25,285 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-02-18 17:14:25,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:25,286 INFO L225 Difference]: With dead ends: 40 [2023-02-18 17:14:25,286 INFO L226 Difference]: Without dead ends: 32 [2023-02-18 17:14:25,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 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 17:14:25,288 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 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 17:14:25,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 17:14:25,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-18 17:14:25,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2023-02-18 17:14:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 17:14:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 43 transitions. [2023-02-18 17:14:25,296 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 43 transitions. Word has length 29 [2023-02-18 17:14:25,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:25,298 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 43 transitions. [2023-02-18 17:14:25,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 17:14:25,298 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 43 transitions. [2023-02-18 17:14:25,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 17:14:25,299 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:25,299 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:25,307 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 17:14:25,500 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 17:14:25,500 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:25,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:25,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1233535180, now seen corresponding path program 1 times [2023-02-18 17:14:25,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:25,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803513446] [2023-02-18 17:14:25,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:25,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:25,513 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:25,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [534214249] [2023-02-18 17:14:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:25,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:25,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:25,515 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 17:14:25,522 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 17:14:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:25,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 17:14:25,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:25,640 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 17:14:25,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:25,713 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 17:14:25,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:25,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803513446] [2023-02-18 17:14:25,718 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:25,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534214249] [2023-02-18 17:14:25,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534214249] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:14:25,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:14:25,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-02-18 17:14:25,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289607285] [2023-02-18 17:14:25,722 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:14:25,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 17:14:25,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:25,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 17:14:25,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 17:14:25,726 INFO L87 Difference]: Start difference. First operand 32 states and 43 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 17:14:25,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:25,808 INFO L93 Difference]: Finished difference Result 49 states and 67 transitions. [2023-02-18 17:14:25,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 17:14:25,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 30 [2023-02-18 17:14:25,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:25,810 INFO L225 Difference]: With dead ends: 49 [2023-02-18 17:14:25,810 INFO L226 Difference]: Without dead ends: 41 [2023-02-18 17:14:25,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-02-18 17:14:25,811 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 29 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:25,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 92 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 17:14:25,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-18 17:14:25,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2023-02-18 17:14:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 20 states have (on average 1.25) internal successors, (25), 21 states have internal predecessors, (25), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 17:14:25,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2023-02-18 17:14:25,819 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 30 [2023-02-18 17:14:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:25,819 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2023-02-18 17:14:25,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 17:14:25,820 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2023-02-18 17:14:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 17:14:25,821 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:25,821 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:25,826 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 17:14:26,025 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 17:14:26,026 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:26,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:26,026 INFO L85 PathProgramCache]: Analyzing trace with hash -73118621, now seen corresponding path program 1 times [2023-02-18 17:14:26,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:26,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424635881] [2023-02-18 17:14:26,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:26,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:26,041 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:26,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500637689] [2023-02-18 17:14:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:26,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:26,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:26,045 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 17:14:26,057 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 17:14:26,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:26,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 17:14:26,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:26,177 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 17:14:26,177 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 17:14:26,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:26,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424635881] [2023-02-18 17:14:26,208 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:26,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500637689] [2023-02-18 17:14:26,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500637689] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 17:14:26,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 17:14:26,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2023-02-18 17:14:26,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303240021] [2023-02-18 17:14:26,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:14:26,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 17:14:26,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:26,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 17:14:26,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-02-18 17:14:26,210 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 17:14:26,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:26,250 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2023-02-18 17:14:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 17:14:26,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 32 [2023-02-18 17:14:26,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:26,252 INFO L225 Difference]: With dead ends: 39 [2023-02-18 17:14:26,252 INFO L226 Difference]: Without dead ends: 37 [2023-02-18 17:14:26,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-18 17:14:26,254 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 8 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:26,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 114 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 17:14:26,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-18 17:14:26,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-18 17:14:26,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 24 states have internal predecessors, (28), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 17:14:26,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2023-02-18 17:14:26,261 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 32 [2023-02-18 17:14:26,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:26,262 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2023-02-18 17:14:26,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 17:14:26,262 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2023-02-18 17:14:26,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 17:14:26,263 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:26,263 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:26,273 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 17:14:26,469 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 17:14:26,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:26,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:26,470 INFO L85 PathProgramCache]: Analyzing trace with hash 96561445, now seen corresponding path program 1 times [2023-02-18 17:14:26,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:26,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818620398] [2023-02-18 17:14:26,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:26,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:26,481 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:26,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13263208] [2023-02-18 17:14:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:26,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:26,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:26,483 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 17:14:26,507 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 17:14:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:26,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 17:14:26,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:26,551 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 17:14:26,551 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 17:14:26,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:26,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818620398] [2023-02-18 17:14:26,552 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:26,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13263208] [2023-02-18 17:14:26,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13263208] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 17:14:26,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 17:14:26,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 17:14:26,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532194922] [2023-02-18 17:14:26,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:14:26,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 17:14:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:26,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 17:14:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 17:14:26,555 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 17:14:26,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:26,571 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2023-02-18 17:14:26,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 17:14:26,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2023-02-18 17:14:26,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:26,572 INFO L225 Difference]: With dead ends: 62 [2023-02-18 17:14:26,572 INFO L226 Difference]: Without dead ends: 39 [2023-02-18 17:14:26,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 17:14:26,574 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:26,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 17:14:26,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-18 17:14:26,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-02-18 17:14:26,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.2) internal successors, (30), 26 states have internal predecessors, (30), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 17:14:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 49 transitions. [2023-02-18 17:14:26,582 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 49 transitions. Word has length 35 [2023-02-18 17:14:26,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:26,582 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 49 transitions. [2023-02-18 17:14:26,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-18 17:14:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 49 transitions. [2023-02-18 17:14:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-18 17:14:26,584 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:26,584 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:26,594 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 17:14:26,790 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 17:14:26,790 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:26,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:26,791 INFO L85 PathProgramCache]: Analyzing trace with hash 433790877, now seen corresponding path program 1 times [2023-02-18 17:14:26,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:26,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730392038] [2023-02-18 17:14:26,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:26,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:26,812 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:26,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098680617] [2023-02-18 17:14:26,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:26,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:26,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:26,815 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 17:14:26,827 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 17:14:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:26,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 17:14:26,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:26,983 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 17:14:26,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 17:14:27,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:27,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730392038] [2023-02-18 17:14:27,039 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:27,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098680617] [2023-02-18 17:14:27,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098680617] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 17:14:27,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 17:14:27,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-02-18 17:14:27,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194335328] [2023-02-18 17:14:27,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:14:27,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 17:14:27,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:27,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 17:14:27,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-18 17:14:27,043 INFO L87 Difference]: Start difference. First operand 39 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-18 17:14:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:27,099 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2023-02-18 17:14:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 17:14:27,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-02-18 17:14:27,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:27,102 INFO L225 Difference]: With dead ends: 53 [2023-02-18 17:14:27,102 INFO L226 Difference]: Without dead ends: 51 [2023-02-18 17:14:27,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-18 17:14:27,105 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:27,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 140 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 17:14:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-18 17:14:27,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2023-02-18 17:14:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-18 17:14:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 65 transitions. [2023-02-18 17:14:27,122 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 65 transitions. Word has length 37 [2023-02-18 17:14:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:27,123 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 65 transitions. [2023-02-18 17:14:27,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-18 17:14:27,126 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 65 transitions. [2023-02-18 17:14:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 17:14:27,131 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:27,131 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:27,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 17:14:27,337 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 17:14:27,338 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:27,338 INFO L85 PathProgramCache]: Analyzing trace with hash -553232285, now seen corresponding path program 1 times [2023-02-18 17:14:27,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:27,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038852788] [2023-02-18 17:14:27,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:27,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:27,351 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:27,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [337195504] [2023-02-18 17:14:27,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:27,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:27,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:27,356 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 17:14:27,382 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 17:14:27,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:27,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 17:14:27,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:27,469 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-18 17:14:27,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:27,500 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 17:14:27,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:27,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038852788] [2023-02-18 17:14:27,501 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:27,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337195504] [2023-02-18 17:14:27,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337195504] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 17:14:27,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 17:14:27,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 13 [2023-02-18 17:14:27,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137771438] [2023-02-18 17:14:27,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:14:27,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 17:14:27,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:27,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 17:14:27,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-02-18 17:14:27,503 INFO L87 Difference]: Start difference. First operand 50 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 17:14:27,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:27,547 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2023-02-18 17:14:27,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 17:14:27,547 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-02-18 17:14:27,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:27,548 INFO L225 Difference]: With dead ends: 57 [2023-02-18 17:14:27,548 INFO L226 Difference]: Without dead ends: 55 [2023-02-18 17:14:27,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2023-02-18 17:14:27,550 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 7 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:27,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 131 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 17:14:27,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-18 17:14:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2023-02-18 17:14:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 35 states have internal predecessors, (41), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-18 17:14:27,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2023-02-18 17:14:27,560 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 42 [2023-02-18 17:14:27,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:27,560 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2023-02-18 17:14:27,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-18 17:14:27,561 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2023-02-18 17:14:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 17:14:27,561 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:27,561 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:27,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-18 17:14:27,769 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 17:14:27,769 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:27,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:27,770 INFO L85 PathProgramCache]: Analyzing trace with hash 2115683101, now seen corresponding path program 1 times [2023-02-18 17:14:27,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:27,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841816742] [2023-02-18 17:14:27,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:27,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:27,781 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:27,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941801725] [2023-02-18 17:14:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:27,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:27,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:27,784 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 17:14:27,809 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 17:14:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:27,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-18 17:14:27,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-18 17:14:27,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:27,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:27,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841816742] [2023-02-18 17:14:27,993 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:27,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941801725] [2023-02-18 17:14:27,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941801725] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 17:14:27,993 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 17:14:27,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-18 17:14:27,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123517242] [2023-02-18 17:14:27,994 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 17:14:27,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 17:14:27,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:27,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 17:14:27,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-18 17:14:27,996 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-18 17:14:28,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:28,109 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2023-02-18 17:14:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 17:14:28,109 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-02-18 17:14:28,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:28,110 INFO L225 Difference]: With dead ends: 61 [2023-02-18 17:14:28,110 INFO L226 Difference]: Without dead ends: 59 [2023-02-18 17:14:28,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-02-18 17:14:28,112 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:28,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 115 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 17:14:28,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-18 17:14:28,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2023-02-18 17:14:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-18 17:14:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2023-02-18 17:14:28,130 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 47 [2023-02-18 17:14:28,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:28,131 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2023-02-18 17:14:28,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-18 17:14:28,132 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2023-02-18 17:14:28,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-18 17:14:28,133 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:28,133 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:28,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-18 17:14:28,339 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 17:14:28,340 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash -879665460, now seen corresponding path program 1 times [2023-02-18 17:14:28,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:28,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539769842] [2023-02-18 17:14:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:28,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:28,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2068490483] [2023-02-18 17:14:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:28,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:28,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:28,352 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 17:14:28,360 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 17:14:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:28,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 17:14:28,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-18 17:14:28,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-18 17:14:28,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:28,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539769842] [2023-02-18 17:14:28,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:28,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068490483] [2023-02-18 17:14:28,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068490483] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:14:28,467 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:14:28,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-02-18 17:14:28,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241187117] [2023-02-18 17:14:28,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:14:28,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 17:14:28,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 17:14:28,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-18 17:14:28,471 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-02-18 17:14:28,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:28,610 INFO L93 Difference]: Finished difference Result 211 states and 250 transitions. [2023-02-18 17:14:28,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 17:14:28,611 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 56 [2023-02-18 17:14:28,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:28,615 INFO L225 Difference]: With dead ends: 211 [2023-02-18 17:14:28,616 INFO L226 Difference]: Without dead ends: 203 [2023-02-18 17:14:28,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-02-18 17:14:28,618 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 80 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:28,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 186 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 17:14:28,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-02-18 17:14:28,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 195. [2023-02-18 17:14:28,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 125 states have (on average 1.192) internal successors, (149), 129 states have internal predecessors, (149), 44 states have call successors, (44), 25 states have call predecessors, (44), 25 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-02-18 17:14:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 233 transitions. [2023-02-18 17:14:28,664 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 233 transitions. Word has length 56 [2023-02-18 17:14:28,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:28,665 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 233 transitions. [2023-02-18 17:14:28,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-02-18 17:14:28,665 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 233 transitions. [2023-02-18 17:14:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-18 17:14:28,669 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:28,669 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:28,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 17:14:28,875 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 17:14:28,876 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:28,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:28,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1506412172, now seen corresponding path program 1 times [2023-02-18 17:14:28,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:28,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477263421] [2023-02-18 17:14:28,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:28,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:28,886 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:28,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744855215] [2023-02-18 17:14:28,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:28,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:28,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:28,888 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 17:14:28,890 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 17:14:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:28,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 17:14:28,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-18 17:14:28,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:29,004 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-18 17:14:29,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:29,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477263421] [2023-02-18 17:14:29,005 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:29,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744855215] [2023-02-18 17:14:29,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744855215] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:14:29,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:14:29,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-02-18 17:14:29,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057222453] [2023-02-18 17:14:29,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:14:29,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 17:14:29,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:29,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 17:14:29,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-18 17:14:29,007 INFO L87 Difference]: Start difference. First operand 195 states and 233 transitions. Second operand has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-18 17:14:29,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:29,215 INFO L93 Difference]: Finished difference Result 279 states and 364 transitions. [2023-02-18 17:14:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 17:14:29,215 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 57 [2023-02-18 17:14:29,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:29,219 INFO L225 Difference]: With dead ends: 279 [2023-02-18 17:14:29,219 INFO L226 Difference]: Without dead ends: 259 [2023-02-18 17:14:29,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 100 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-02-18 17:14:29,222 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 70 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:29,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 334 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 17:14:29,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2023-02-18 17:14:29,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 235. [2023-02-18 17:14:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 152 states have (on average 1.2236842105263157) internal successors, (186), 155 states have internal predecessors, (186), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-02-18 17:14:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 299 transitions. [2023-02-18 17:14:29,256 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 299 transitions. Word has length 57 [2023-02-18 17:14:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:29,257 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 299 transitions. [2023-02-18 17:14:29,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.0) internal successors, (27), 8 states have internal predecessors, (27), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-18 17:14:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 299 transitions. [2023-02-18 17:14:29,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-18 17:14:29,258 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:29,259 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:29,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 17:14:29,464 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 17:14:29,464 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:29,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1869160295, now seen corresponding path program 1 times [2023-02-18 17:14:29,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:29,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530042204] [2023-02-18 17:14:29,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:29,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:29,474 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:29,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474775799] [2023-02-18 17:14:29,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:29,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:29,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:29,476 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 17:14:29,479 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 17:14:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:29,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 17:14:29,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-18 17:14:29,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-18 17:14:29,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:29,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530042204] [2023-02-18 17:14:29,582 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:29,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474775799] [2023-02-18 17:14:29,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474775799] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:14:29,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:14:29,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-02-18 17:14:29,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539130750] [2023-02-18 17:14:29,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:14:29,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 17:14:29,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:29,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 17:14:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-18 17:14:29,585 INFO L87 Difference]: Start difference. First operand 235 states and 299 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-02-18 17:14:29,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:29,710 INFO L93 Difference]: Finished difference Result 344 states and 448 transitions. [2023-02-18 17:14:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 17:14:29,710 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 59 [2023-02-18 17:14:29,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:29,712 INFO L225 Difference]: With dead ends: 344 [2023-02-18 17:14:29,712 INFO L226 Difference]: Without dead ends: 248 [2023-02-18 17:14:29,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-02-18 17:14:29,713 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 74 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:29,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 200 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 17:14:29,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-02-18 17:14:29,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 244. [2023-02-18 17:14:29,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 161 states have (on average 1.173913043478261) internal successors, (189), 164 states have internal predecessors, (189), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2023-02-18 17:14:29,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 302 transitions. [2023-02-18 17:14:29,736 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 302 transitions. Word has length 59 [2023-02-18 17:14:29,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:29,737 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 302 transitions. [2023-02-18 17:14:29,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 10 states have internal predecessors, (41), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2023-02-18 17:14:29,737 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 302 transitions. [2023-02-18 17:14:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-18 17:14:29,738 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:29,738 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:29,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 17:14:29,944 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 17:14:29,944 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash 991223133, now seen corresponding path program 1 times [2023-02-18 17:14:29,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:29,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681261338] [2023-02-18 17:14:29,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:29,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:29,953 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:29,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [972168717] [2023-02-18 17:14:29,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:29,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:29,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:29,955 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 17:14:29,957 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 17:14:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:30,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-18 17:14:30,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:30,089 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-02-18 17:14:30,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:30,155 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-02-18 17:14:30,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:30,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681261338] [2023-02-18 17:14:30,156 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:30,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972168717] [2023-02-18 17:14:30,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972168717] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:14:30,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:14:30,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2023-02-18 17:14:30,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985504344] [2023-02-18 17:14:30,157 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:14:30,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 17:14:30,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:30,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 17:14:30,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-02-18 17:14:30,158 INFO L87 Difference]: Start difference. First operand 244 states and 302 transitions. Second operand has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-02-18 17:14:30,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:30,733 INFO L93 Difference]: Finished difference Result 330 states and 429 transitions. [2023-02-18 17:14:30,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 17:14:30,734 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) Word has length 64 [2023-02-18 17:14:30,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:30,737 INFO L225 Difference]: With dead ends: 330 [2023-02-18 17:14:30,737 INFO L226 Difference]: Without dead ends: 324 [2023-02-18 17:14:30,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2023-02-18 17:14:30,738 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 66 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:30,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 345 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 17:14:30,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-02-18 17:14:30,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 291. [2023-02-18 17:14:30,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 194 states have (on average 1.1958762886597938) internal successors, (232), 203 states have internal predecessors, (232), 69 states have call successors, (69), 27 states have call predecessors, (69), 27 states have return successors, (65), 60 states have call predecessors, (65), 65 states have call successors, (65) [2023-02-18 17:14:30,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 366 transitions. [2023-02-18 17:14:30,773 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 366 transitions. Word has length 64 [2023-02-18 17:14:30,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:30,773 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 366 transitions. [2023-02-18 17:14:30,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 8 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 7 states have call predecessors, (16), 7 states have call successors, (16) [2023-02-18 17:14:30,773 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 366 transitions. [2023-02-18 17:14:30,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-18 17:14:30,774 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:30,774 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:30,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 17:14:30,980 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 17:14:30,980 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:30,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:30,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1694315171, now seen corresponding path program 2 times [2023-02-18 17:14:30,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:30,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780745790] [2023-02-18 17:14:30,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:30,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:30,988 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:30,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619281247] [2023-02-18 17:14:30,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 17:14:30,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:30,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:30,990 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 17:14:31,019 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 17:14:31,060 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 17:14:31,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 17:14:31,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-18 17:14:31,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:31,153 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 26 proven. 21 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-02-18 17:14:31,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:31,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:31,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780745790] [2023-02-18 17:14:31,213 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:31,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619281247] [2023-02-18 17:14:31,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619281247] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 17:14:31,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 17:14:31,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-02-18 17:14:31,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394801129] [2023-02-18 17:14:31,214 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 17:14:31,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 17:14:31,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:31,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 17:14:31,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-02-18 17:14:31,215 INFO L87 Difference]: Start difference. First operand 291 states and 366 transitions. Second operand has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-02-18 17:14:31,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:31,711 INFO L93 Difference]: Finished difference Result 315 states and 393 transitions. [2023-02-18 17:14:31,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 17:14:31,712 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 69 [2023-02-18 17:14:31,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:31,714 INFO L225 Difference]: With dead ends: 315 [2023-02-18 17:14:31,714 INFO L226 Difference]: Without dead ends: 313 [2023-02-18 17:14:31,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-02-18 17:14:31,715 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 40 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:31,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 198 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 17:14:31,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2023-02-18 17:14:31,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 310. [2023-02-18 17:14:31,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 206 states have (on average 1.1941747572815533) internal successors, (246), 215 states have internal predecessors, (246), 73 states have call successors, (73), 30 states have call predecessors, (73), 30 states have return successors, (69), 64 states have call predecessors, (69), 69 states have call successors, (69) [2023-02-18 17:14:31,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 388 transitions. [2023-02-18 17:14:31,755 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 388 transitions. Word has length 69 [2023-02-18 17:14:31,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:31,756 INFO L495 AbstractCegarLoop]: Abstraction has 310 states and 388 transitions. [2023-02-18 17:14:31,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.5) internal successors, (30), 10 states have internal predecessors, (30), 5 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2023-02-18 17:14:31,756 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 388 transitions. [2023-02-18 17:14:31,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-02-18 17:14:31,757 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:31,757 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:31,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-18 17:14:31,963 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 17:14:31,963 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:31,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1349365539, now seen corresponding path program 3 times [2023-02-18 17:14:31,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:31,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050257399] [2023-02-18 17:14:31,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:31,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:31,983 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:31,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1680901550] [2023-02-18 17:14:31,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 17:14:31,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:31,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:31,989 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 17:14:31,996 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 17:14:32,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 17:14:32,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 17:14:32,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-18 17:14:32,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 37 proven. 16 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-02-18 17:14:32,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-02-18 17:14:33,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:33,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050257399] [2023-02-18 17:14:33,447 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:33,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680901550] [2023-02-18 17:14:33,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680901550] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:14:33,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:14:33,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 24 [2023-02-18 17:14:33,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157640390] [2023-02-18 17:14:33,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:14:33,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-18 17:14:33,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:33,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-18 17:14:33,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2023-02-18 17:14:33,450 INFO L87 Difference]: Start difference. First operand 310 states and 388 transitions. Second operand has 24 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 11 states have call predecessors, (22), 8 states have call successors, (22) [2023-02-18 17:14:37,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:14:40,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:14:47,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:14:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:14:52,621 INFO L93 Difference]: Finished difference Result 402 states and 527 transitions. [2023-02-18 17:14:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-02-18 17:14:52,621 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 11 states have call predecessors, (22), 8 states have call successors, (22) Word has length 74 [2023-02-18 17:14:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:14:52,623 INFO L225 Difference]: With dead ends: 402 [2023-02-18 17:14:52,624 INFO L226 Difference]: Without dead ends: 398 [2023-02-18 17:14:52,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 121 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=302, Invalid=1338, Unknown=0, NotChecked=0, Total=1640 [2023-02-18 17:14:52,625 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 184 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 157 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2023-02-18 17:14:52,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 267 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 797 Invalid, 2 Unknown, 0 Unchecked, 17.1s Time] [2023-02-18 17:14:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-02-18 17:14:52,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 367. [2023-02-18 17:14:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 241 states have (on average 1.2157676348547717) internal successors, (293), 250 states have internal predecessors, (293), 93 states have call successors, (93), 33 states have call predecessors, (93), 32 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2023-02-18 17:14:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 475 transitions. [2023-02-18 17:14:52,722 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 475 transitions. Word has length 74 [2023-02-18 17:14:52,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:14:52,722 INFO L495 AbstractCegarLoop]: Abstraction has 367 states and 475 transitions. [2023-02-18 17:14:52,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 states have internal predecessors, (49), 9 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (22), 11 states have call predecessors, (22), 8 states have call successors, (22) [2023-02-18 17:14:52,723 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 475 transitions. [2023-02-18 17:14:52,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-02-18 17:14:52,724 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:14:52,724 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:14:52,730 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 17:14:52,924 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 17:14:52,925 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:14:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:14:52,925 INFO L85 PathProgramCache]: Analyzing trace with hash -484140586, now seen corresponding path program 1 times [2023-02-18 17:14:52,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:14:52,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469164436] [2023-02-18 17:14:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:52,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:14:52,946 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:14:52,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2087054861] [2023-02-18 17:14:52,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:14:52,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:14:52,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:14:52,949 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 17:14:52,952 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 17:14:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:14:53,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 43 conjunts are in the unsatisfiable core [2023-02-18 17:14:53,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:14:53,120 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2023-02-18 17:14:53,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:14:53,824 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-02-18 17:14:53,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:14:53,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469164436] [2023-02-18 17:14:53,825 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:14:53,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087054861] [2023-02-18 17:14:53,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2087054861] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:14:53,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:14:53,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-02-18 17:14:53,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619930868] [2023-02-18 17:14:53,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:14:53,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 17:14:53,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:14:53,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 17:14:53,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2023-02-18 17:14:53,828 INFO L87 Difference]: Start difference. First operand 367 states and 475 transitions. Second operand has 21 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-02-18 17:15:01,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:15:01,714 INFO L93 Difference]: Finished difference Result 523 states and 722 transitions. [2023-02-18 17:15:01,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-02-18 17:15:01,714 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 80 [2023-02-18 17:15:01,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:15:01,717 INFO L225 Difference]: With dead ends: 523 [2023-02-18 17:15:01,717 INFO L226 Difference]: Without dead ends: 512 [2023-02-18 17:15:01,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=375, Invalid=1605, Unknown=0, NotChecked=0, Total=1980 [2023-02-18 17:15:01,718 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 169 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-02-18 17:15:01,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 670 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-02-18 17:15:01,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2023-02-18 17:15:01,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 478. [2023-02-18 17:15:01,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 311 states have (on average 1.2668810289389068) internal successors, (394), 321 states have internal predecessors, (394), 133 states have call successors, (133), 33 states have call predecessors, (133), 33 states have return successors, (131), 123 states have call predecessors, (131), 131 states have call successors, (131) [2023-02-18 17:15:01,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 658 transitions. [2023-02-18 17:15:01,862 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 658 transitions. Word has length 80 [2023-02-18 17:15:01,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:15:01,863 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 658 transitions. [2023-02-18 17:15:01,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 2.3157894736842106) internal successors, (44), 18 states have internal predecessors, (44), 10 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2023-02-18 17:15:01,863 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 658 transitions. [2023-02-18 17:15:01,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-02-18 17:15:01,864 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:15:01,864 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:15:01,871 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 17:15:02,070 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 17:15:02,070 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:15:02,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:15:02,071 INFO L85 PathProgramCache]: Analyzing trace with hash 164622435, now seen corresponding path program 4 times [2023-02-18 17:15:02,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:15:02,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43592145] [2023-02-18 17:15:02,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:15:02,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:15:02,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:15:02,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1190395839] [2023-02-18 17:15:02,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 17:15:02,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:15:02,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:15:02,089 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 17:15:02,090 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 17:15:02,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 17:15:02,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 17:15:02,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 17:15:02,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:15:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2023-02-18 17:15:02,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 17:15:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:15:02,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43592145] [2023-02-18 17:15:02,157 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:15:02,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1190395839] [2023-02-18 17:15:02,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1190395839] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 17:15:02,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 17:15:02,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 17:15:02,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682821495] [2023-02-18 17:15:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 17:15:02,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 17:15:02,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:15:02,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 17:15:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 17:15:02,159 INFO L87 Difference]: Start difference. First operand 478 states and 658 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-02-18 17:15:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:15:02,395 INFO L93 Difference]: Finished difference Result 745 states and 1090 transitions. [2023-02-18 17:15:02,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 17:15:02,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 96 [2023-02-18 17:15:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:15:02,398 INFO L225 Difference]: With dead ends: 745 [2023-02-18 17:15:02,399 INFO L226 Difference]: Without dead ends: 513 [2023-02-18 17:15:02,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 17:15:02,400 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 13 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 17:15:02,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 163 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 17:15:02,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-02-18 17:15:02,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 470. [2023-02-18 17:15:02,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 303 states have (on average 1.2640264026402641) internal successors, (383), 311 states have internal predecessors, (383), 133 states have call successors, (133), 33 states have call predecessors, (133), 33 states have return successors, (131), 125 states have call predecessors, (131), 131 states have call successors, (131) [2023-02-18 17:15:02,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 647 transitions. [2023-02-18 17:15:02,567 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 647 transitions. Word has length 96 [2023-02-18 17:15:02,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:15:02,568 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 647 transitions. [2023-02-18 17:15:02,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-02-18 17:15:02,568 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 647 transitions. [2023-02-18 17:15:02,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-02-18 17:15:02,570 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:15:02,570 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:15:02,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 17:15:02,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-18 17:15:02,777 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:15:02,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:15:02,777 INFO L85 PathProgramCache]: Analyzing trace with hash -245423741, now seen corresponding path program 1 times [2023-02-18 17:15:02,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:15:02,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390658113] [2023-02-18 17:15:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:15:02,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:15:02,788 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:15:02,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548186222] [2023-02-18 17:15:02,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:15:02,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:15:02,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:15:02,790 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 17:15:02,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-18 17:15:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:15:02,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 17:15:02,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:15:02,888 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 229 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-02-18 17:15:02,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:15:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 32 proven. 37 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2023-02-18 17:15:02,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:15:02,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390658113] [2023-02-18 17:15:02,971 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:15:02,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548186222] [2023-02-18 17:15:02,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548186222] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:15:02,971 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:15:02,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-02-18 17:15:02,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107551678] [2023-02-18 17:15:02,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:15:02,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 17:15:02,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:15:02,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 17:15:02,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2023-02-18 17:15:02,973 INFO L87 Difference]: Start difference. First operand 470 states and 647 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-02-18 17:15:03,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:15:03,711 INFO L93 Difference]: Finished difference Result 1512 states and 2112 transitions. [2023-02-18 17:15:03,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-18 17:15:03,711 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) Word has length 112 [2023-02-18 17:15:03,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:15:03,717 INFO L225 Difference]: With dead ends: 1512 [2023-02-18 17:15:03,717 INFO L226 Difference]: Without dead ends: 1270 [2023-02-18 17:15:03,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=311, Invalid=559, Unknown=0, NotChecked=0, Total=870 [2023-02-18 17:15:03,719 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 201 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 17:15:03,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 363 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 17:15:03,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2023-02-18 17:15:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1208. [2023-02-18 17:15:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 758 states have (on average 1.2097625329815302) internal successors, (917), 780 states have internal predecessors, (917), 344 states have call successors, (344), 105 states have call predecessors, (344), 105 states have return successors, (335), 322 states have call predecessors, (335), 335 states have call successors, (335) [2023-02-18 17:15:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1596 transitions. [2023-02-18 17:15:04,103 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1596 transitions. Word has length 112 [2023-02-18 17:15:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:15:04,104 INFO L495 AbstractCegarLoop]: Abstraction has 1208 states and 1596 transitions. [2023-02-18 17:15:04,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 9 states have call successors, (33), 6 states have call predecessors, (33), 5 states have return successors, (32), 8 states have call predecessors, (32), 8 states have call successors, (32) [2023-02-18 17:15:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1596 transitions. [2023-02-18 17:15:04,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-02-18 17:15:04,105 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:15:04,106 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:15:04,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-18 17:15:04,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-18 17:15:04,312 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:15:04,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:15:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1897577373, now seen corresponding path program 1 times [2023-02-18 17:15:04,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:15:04,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507165473] [2023-02-18 17:15:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:15:04,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:15:04,324 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:15:04,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167450784] [2023-02-18 17:15:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:15:04,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:15:04,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:15:04,327 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 17:15:04,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-18 17:15:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:15:04,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-18 17:15:04,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:15:04,517 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 28 proven. 48 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-02-18 17:15:04,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:15:06,269 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-02-18 17:15:06,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:15:06,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507165473] [2023-02-18 17:15:06,270 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:15:06,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167450784] [2023-02-18 17:15:06,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167450784] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:15:06,270 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:15:06,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2023-02-18 17:15:06,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104768303] [2023-02-18 17:15:06,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:15:06,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-18 17:15:06,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:15:06,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-18 17:15:06,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=424, Unknown=0, NotChecked=0, Total=506 [2023-02-18 17:15:06,273 INFO L87 Difference]: Start difference. First operand 1208 states and 1596 transitions. Second operand has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 20 states have internal predecessors, (54), 12 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-02-18 17:15:16,915 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 [] [2023-02-18 17:15:26,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:15:26,932 INFO L93 Difference]: Finished difference Result 1609 states and 2177 transitions. [2023-02-18 17:15:26,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-02-18 17:15:26,933 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 20 states have internal predecessors, (54), 12 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 115 [2023-02-18 17:15:26,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:15:26,940 INFO L225 Difference]: With dead ends: 1609 [2023-02-18 17:15:26,940 INFO L226 Difference]: Without dead ends: 1607 [2023-02-18 17:15:26,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=585, Invalid=2277, Unknown=0, NotChecked=0, Total=2862 [2023-02-18 17:15:26,942 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 179 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 365 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-02-18 17:15:26,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 796 Invalid, 1844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 1478 Invalid, 1 Unknown, 0 Unchecked, 14.0s Time] [2023-02-18 17:15:26,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1607 states. [2023-02-18 17:15:27,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1607 to 1489. [2023-02-18 17:15:27,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1489 states, 918 states have (on average 1.2080610021786493) internal successors, (1109), 937 states have internal predecessors, (1109), 448 states have call successors, (448), 122 states have call predecessors, (448), 122 states have return successors, (439), 429 states have call predecessors, (439), 439 states have call successors, (439) [2023-02-18 17:15:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1489 states to 1489 states and 1996 transitions. [2023-02-18 17:15:27,543 INFO L78 Accepts]: Start accepts. Automaton has 1489 states and 1996 transitions. Word has length 115 [2023-02-18 17:15:27,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:15:27,544 INFO L495 AbstractCegarLoop]: Abstraction has 1489 states and 1996 transitions. [2023-02-18 17:15:27,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.347826086956522) internal successors, (54), 20 states have internal predecessors, (54), 12 states have call successors, (37), 3 states have call predecessors, (37), 2 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2023-02-18 17:15:27,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1489 states and 1996 transitions. [2023-02-18 17:15:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-02-18 17:15:27,545 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:15:27,546 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:15:27,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-02-18 17:15:27,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-18 17:15:27,752 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:15:27,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:15:27,752 INFO L85 PathProgramCache]: Analyzing trace with hash 364386885, now seen corresponding path program 2 times [2023-02-18 17:15:27,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:15:27,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968398231] [2023-02-18 17:15:27,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:15:27,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:15:27,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:15:27,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1376306152] [2023-02-18 17:15:27,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 17:15:27,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:15:27,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:15:27,765 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 17:15:27,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-18 17:15:27,847 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 17:15:27,847 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 17:15:27,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 59 conjunts are in the unsatisfiable core [2023-02-18 17:15:27,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:15:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 31 proven. 52 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2023-02-18 17:15:27,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:15:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 38 proven. 36 refuted. 0 times theorem prover too weak. 388 trivial. 0 not checked. [2023-02-18 17:15:28,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:15:28,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968398231] [2023-02-18 17:15:28,767 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:15:28,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376306152] [2023-02-18 17:15:28,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376306152] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:15:28,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:15:28,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12] total 25 [2023-02-18 17:15:28,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943601643] [2023-02-18 17:15:28,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:15:28,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-18 17:15:28,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:15:28,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-18 17:15:28,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2023-02-18 17:15:28,771 INFO L87 Difference]: Start difference. First operand 1489 states and 1996 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 22 states have internal predecessors, (62), 11 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (35), 12 states have call predecessors, (35), 11 states have call successors, (35) [2023-02-18 17:15:40,298 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 [] [2023-02-18 17:15:41,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:15:41,355 INFO L93 Difference]: Finished difference Result 2127 states and 2894 transitions. [2023-02-18 17:15:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-02-18 17:15:41,355 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 22 states have internal predecessors, (62), 11 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (35), 12 states have call predecessors, (35), 11 states have call successors, (35) Word has length 119 [2023-02-18 17:15:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:15:41,364 INFO L225 Difference]: With dead ends: 2127 [2023-02-18 17:15:41,364 INFO L226 Difference]: Without dead ends: 2125 [2023-02-18 17:15:41,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=682, Invalid=2624, Unknown=0, NotChecked=0, Total=3306 [2023-02-18 17:15:41,368 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 212 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 324 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 1421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2023-02-18 17:15:41,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 820 Invalid, 1421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 1096 Invalid, 1 Unknown, 0 Unchecked, 8.0s Time] [2023-02-18 17:15:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2023-02-18 17:15:42,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 1947. [2023-02-18 17:15:42,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1947 states, 1218 states have (on average 1.2233169129720853) internal successors, (1490), 1237 states have internal predecessors, (1490), 573 states have call successors, (573), 155 states have call predecessors, (573), 155 states have return successors, (564), 554 states have call predecessors, (564), 564 states have call successors, (564) [2023-02-18 17:15:42,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2627 transitions. [2023-02-18 17:15:42,327 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2627 transitions. Word has length 119 [2023-02-18 17:15:42,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:15:42,328 INFO L495 AbstractCegarLoop]: Abstraction has 1947 states and 2627 transitions. [2023-02-18 17:15:42,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 22 states have internal predecessors, (62), 11 states have call successors, (36), 3 states have call predecessors, (36), 2 states have return successors, (35), 12 states have call predecessors, (35), 11 states have call successors, (35) [2023-02-18 17:15:42,328 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2627 transitions. [2023-02-18 17:15:42,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-02-18 17:15:42,330 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:15:42,330 INFO L195 NwaCegarLoop]: trace histogram [16, 15, 15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:15:42,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-18 17:15:42,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:15:42,536 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:15:42,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:15:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1493115269, now seen corresponding path program 3 times [2023-02-18 17:15:42,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:15:42,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725844030] [2023-02-18 17:15:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:15:42,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:15:42,546 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:15:42,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [973956796] [2023-02-18 17:15:42,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 17:15:42,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:15:42,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:15:42,551 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 17:15:42,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-18 17:15:42,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 17:15:42,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 17:15:42,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-18 17:15:42,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:15:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 80 proven. 50 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2023-02-18 17:15:44,697 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:15:48,720 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 83 proven. 40 refuted. 7 times theorem prover too weak. 393 trivial. 0 not checked. [2023-02-18 17:15:48,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:15:48,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725844030] [2023-02-18 17:15:48,721 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:15:48,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973956796] [2023-02-18 17:15:48,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973956796] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:15:48,721 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:15:48,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 30 [2023-02-18 17:15:48,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169943082] [2023-02-18 17:15:48,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:15:48,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-02-18 17:15:48,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:15:48,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-02-18 17:15:48,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=708, Unknown=1, NotChecked=0, Total=870 [2023-02-18 17:15:48,723 INFO L87 Difference]: Start difference. First operand 1947 states and 2627 transitions. Second operand has 30 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 28 states have internal predecessors, (69), 12 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 14 states have call predecessors, (36), 11 states have call successors, (36) [2023-02-18 17:15:53,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:03,043 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:05,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:06,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:10,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:12,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:14,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:17,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:21,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:22,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:25,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:27,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:29,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:36,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:38,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:40,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:16:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:16:41,670 INFO L93 Difference]: Finished difference Result 2480 states and 3385 transitions. [2023-02-18 17:16:41,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-18 17:16:41,671 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 28 states have internal predecessors, (69), 12 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 14 states have call predecessors, (36), 11 states have call successors, (36) Word has length 124 [2023-02-18 17:16:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:16:41,679 INFO L225 Difference]: With dead ends: 2480 [2023-02-18 17:16:41,680 INFO L226 Difference]: Without dead ends: 2474 [2023-02-18 17:16:41,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 215 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 15.9s TimeCoverageRelationStatistics Valid=540, Invalid=1906, Unknown=4, NotChecked=0, Total=2450 [2023-02-18 17:16:41,682 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 171 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 139 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 1471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.1s IncrementalHoareTripleChecker+Time [2023-02-18 17:16:41,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 462 Invalid, 1471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1318 Invalid, 14 Unknown, 0 Unchecked, 41.1s Time] [2023-02-18 17:16:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2023-02-18 17:16:42,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2423. [2023-02-18 17:16:42,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 1498 states have (on average 1.2229639519359146) internal successors, (1832), 1530 states have internal predecessors, (1832), 748 states have call successors, (748), 177 states have call predecessors, (748), 176 states have return successors, (740), 715 states have call predecessors, (740), 740 states have call successors, (740) [2023-02-18 17:16:42,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3320 transitions. [2023-02-18 17:16:42,867 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3320 transitions. Word has length 124 [2023-02-18 17:16:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:16:42,868 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 3320 transitions. [2023-02-18 17:16:42,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 2.5555555555555554) internal successors, (69), 28 states have internal predecessors, (69), 12 states have call successors, (38), 3 states have call predecessors, (38), 3 states have return successors, (36), 14 states have call predecessors, (36), 11 states have call successors, (36) [2023-02-18 17:16:42,868 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3320 transitions. [2023-02-18 17:16:42,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-02-18 17:16:42,869 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:16:42,870 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:16:42,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-18 17:16:43,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:16:43,075 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:16:43,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:16:43,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1036292276, now seen corresponding path program 1 times [2023-02-18 17:16:43,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:16:43,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064939382] [2023-02-18 17:16:43,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:16:43,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:16:43,082 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:16:43,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874042297] [2023-02-18 17:16:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:16:43,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:16:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:16:43,090 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 17:16:43,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-18 17:16:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 17:16:43,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 17:16:43,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:16:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 434 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-02-18 17:16:43,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:16:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 32 proven. 50 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-02-18 17:16:43,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:16:43,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064939382] [2023-02-18 17:16:43,264 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:16:43,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874042297] [2023-02-18 17:16:43,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874042297] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:16:43,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:16:43,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2023-02-18 17:16:43,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610813336] [2023-02-18 17:16:43,265 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:16:43,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 17:16:43,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:16:43,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 17:16:43,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2023-02-18 17:16:43,268 INFO L87 Difference]: Start difference. First operand 2423 states and 3320 transitions. Second operand has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 11 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-02-18 17:16:44,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:16:44,728 INFO L93 Difference]: Finished difference Result 2499 states and 3396 transitions. [2023-02-18 17:16:44,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-18 17:16:44,728 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 11 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 129 [2023-02-18 17:16:44,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:16:44,737 INFO L225 Difference]: With dead ends: 2499 [2023-02-18 17:16:44,737 INFO L226 Difference]: Without dead ends: 2464 [2023-02-18 17:16:44,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=312, Invalid=558, Unknown=0, NotChecked=0, Total=870 [2023-02-18 17:16:44,738 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 193 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 17:16:44,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 427 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 17:16:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2464 states. [2023-02-18 17:16:45,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2464 to 2447. [2023-02-18 17:16:46,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2447 states, 1522 states have (on average 1.1898817345597898) internal successors, (1811), 1554 states have internal predecessors, (1811), 748 states have call successors, (748), 177 states have call predecessors, (748), 176 states have return successors, (740), 715 states have call predecessors, (740), 740 states have call successors, (740) [2023-02-18 17:16:46,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2447 states to 2447 states and 3299 transitions. [2023-02-18 17:16:46,008 INFO L78 Accepts]: Start accepts. Automaton has 2447 states and 3299 transitions. Word has length 129 [2023-02-18 17:16:46,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:16:46,009 INFO L495 AbstractCegarLoop]: Abstraction has 2447 states and 3299 transitions. [2023-02-18 17:16:46,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.111111111111111) internal successors, (74), 18 states have internal predecessors, (74), 11 states have call successors, (41), 7 states have call predecessors, (41), 6 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2023-02-18 17:16:46,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2447 states and 3299 transitions. [2023-02-18 17:16:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-18 17:16:46,010 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:16:46,011 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:16:46,018 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-18 17:16:46,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:16:46,216 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:16:46,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:16:46,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2066876172, now seen corresponding path program 2 times [2023-02-18 17:16:46,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:16:46,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121892978] [2023-02-18 17:16:46,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:16:46,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:16:46,223 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:16:46,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135950062] [2023-02-18 17:16:46,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 17:16:46,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:16:46,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:16:46,228 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 17:16:46,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-18 17:16:46,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 17:16:46,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 17:16:46,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 65 conjunts are in the unsatisfiable core [2023-02-18 17:16:46,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:16:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 35 proven. 58 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2023-02-18 17:16:46,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:16:47,921 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 32 proven. 52 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2023-02-18 17:16:47,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:16:47,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121892978] [2023-02-18 17:16:47,922 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:16:47,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135950062] [2023-02-18 17:16:47,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135950062] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:16:47,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:16:47,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2023-02-18 17:16:47,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834435543] [2023-02-18 17:16:47,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:16:47,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 17:16:47,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:16:47,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 17:16:47,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2023-02-18 17:16:47,925 INFO L87 Difference]: Start difference. First operand 2447 states and 3299 transitions. Second operand has 28 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 13 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) [2023-02-18 17:17:14,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:17:14,463 INFO L93 Difference]: Finished difference Result 2867 states and 3908 transitions. [2023-02-18 17:17:14,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-02-18 17:17:14,466 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 13 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) Word has length 130 [2023-02-18 17:17:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:17:14,473 INFO L225 Difference]: With dead ends: 2867 [2023-02-18 17:17:14,473 INFO L226 Difference]: Without dead ends: 2836 [2023-02-18 17:17:14,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2028 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1270, Invalid=5702, Unknown=0, NotChecked=0, Total=6972 [2023-02-18 17:17:14,476 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 284 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 2347 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 2347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2023-02-18 17:17:14,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1281 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 2347 Invalid, 0 Unknown, 0 Unchecked, 18.3s Time] [2023-02-18 17:17:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2836 states. [2023-02-18 17:17:15,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2836 to 2569. [2023-02-18 17:17:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2569 states, 1601 states have (on average 1.1923797626483448) internal successors, (1909), 1631 states have internal predecessors, (1909), 780 states have call successors, (780), 188 states have call predecessors, (780), 187 states have return successors, (772), 749 states have call predecessors, (772), 772 states have call successors, (772) [2023-02-18 17:17:15,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3461 transitions. [2023-02-18 17:17:15,922 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3461 transitions. Word has length 130 [2023-02-18 17:17:15,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:17:15,923 INFO L495 AbstractCegarLoop]: Abstraction has 2569 states and 3461 transitions. [2023-02-18 17:17:15,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 13 states have call successors, (40), 3 states have call predecessors, (40), 2 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) [2023-02-18 17:17:15,923 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3461 transitions. [2023-02-18 17:17:15,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-02-18 17:17:15,924 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:17:15,925 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:17:15,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-02-18 17:17:16,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:17:16,129 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:17:16,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:17:16,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1550955276, now seen corresponding path program 3 times [2023-02-18 17:17:16,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:17:16,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410389290] [2023-02-18 17:17:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:17:16,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:17:16,137 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:17:16,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1806490333] [2023-02-18 17:17:16,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 17:17:16,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:17:16,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:17:16,139 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 17:17:16,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-18 17:17:16,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-02-18 17:17:16,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 17:17:16,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-18 17:17:16,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:17:16,299 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 93 proven. 32 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2023-02-18 17:17:16,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:17:18,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:17:18,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410389290] [2023-02-18 17:17:18,430 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:17:18,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806490333] [2023-02-18 17:17:18,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806490333] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 17:17:18,430 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 17:17:18,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-02-18 17:17:18,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178167114] [2023-02-18 17:17:18,431 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 17:17:18,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 17:17:18,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:17:18,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 17:17:18,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=291, Unknown=1, NotChecked=0, Total=342 [2023-02-18 17:17:18,432 INFO L87 Difference]: Start difference. First operand 2569 states and 3461 transitions. Second operand has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-18 17:17:20,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:17:20,061 INFO L93 Difference]: Finished difference Result 2782 states and 3713 transitions. [2023-02-18 17:17:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-18 17:17:20,062 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 149 [2023-02-18 17:17:20,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:17:20,069 INFO L225 Difference]: With dead ends: 2782 [2023-02-18 17:17:20,069 INFO L226 Difference]: Without dead ends: 2747 [2023-02-18 17:17:20,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=83, Invalid=468, Unknown=1, NotChecked=0, Total=552 [2023-02-18 17:17:20,071 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 26 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 17:17:20,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 233 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 17:17:20,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2023-02-18 17:17:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2684. [2023-02-18 17:17:21,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2684 states, 1674 states have (on average 1.1845878136200716) internal successors, (1983), 1701 states have internal predecessors, (1983), 807 states have call successors, (807), 202 states have call predecessors, (807), 202 states have return successors, (800), 780 states have call predecessors, (800), 800 states have call successors, (800) [2023-02-18 17:17:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2684 states to 2684 states and 3590 transitions. [2023-02-18 17:17:21,514 INFO L78 Accepts]: Start accepts. Automaton has 2684 states and 3590 transitions. Word has length 149 [2023-02-18 17:17:21,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:17:21,514 INFO L495 AbstractCegarLoop]: Abstraction has 2684 states and 3590 transitions. [2023-02-18 17:17:21,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 states have internal predecessors, (29), 4 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-18 17:17:21,515 INFO L276 IsEmpty]: Start isEmpty. Operand 2684 states and 3590 transitions. [2023-02-18 17:17:21,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-02-18 17:17:21,517 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:17:21,517 INFO L195 NwaCegarLoop]: trace histogram [24, 23, 23, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:17:21,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-02-18 17:17:21,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:17:21,725 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:17:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:17:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1547189055, now seen corresponding path program 4 times [2023-02-18 17:17:21,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:17:21,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107661405] [2023-02-18 17:17:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:17:21,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:17:21,735 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:17:21,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990280467] [2023-02-18 17:17:21,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 17:17:21,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:17:21,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:17:21,738 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 17:17:21,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-02-18 17:17:21,839 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 17:17:21,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 17:17:21,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 88 conjunts are in the unsatisfiable core [2023-02-18 17:17:21,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:17:22,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 211 proven. 134 refuted. 0 times theorem prover too weak. 847 trivial. 0 not checked. [2023-02-18 17:17:22,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:17:38,305 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)))) (.cse5 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~k~0#1|))))) (let ((.cse11 (* |c_ULTIMATE.start_main_~x~0#1| .cse5)) (.cse12 (* |c_ULTIMATE.start_main_~y~0#1| .cse3))) (let ((.cse7 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse8 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| .cse5)) (.cse9 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse10 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| .cse3)) (.cse6 (+ .cse11 .cse12))) (or (>= |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~b~0#1|) (= 0 (let ((.cse4 (+ 1 (+ 1 0)))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~q~0#1| (- (* .cse5 .cse4)))) (.cse1 (+ |c_ULTIMATE.start_main_~s~0#1| (- (* .cse3 .cse4))))) (let ((.cse2 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse0) (* |c_ULTIMATE.start_main_~y~0#1| .cse1)))) (+ (+ (+ (+ (+ (* .cse0 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse1 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse0 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse2 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse1 |c_ULTIMATE.start_main_~y~0#1|))) .cse2))))) (>= (+ (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| 0 .cse5) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| 0 .cse3) .cse6 .cse7 .cse8 .cse9 .cse10) (+ (- .cse11) (- .cse12))) .cse6) (not (= 0 (+ (+ (+ (+ (+ (* .cse5 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse3 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse5 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse6 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse3 |c_ULTIMATE.start_main_~y~0#1|))) .cse6))) (not (= (+ (* 2 .cse6) .cse7 .cse8 .cse9 .cse10) |c_ULTIMATE.start_main_~b~0#1|)) (not (= .cse6 |c_ULTIMATE.start_main_~c~0#1|)))))) is different from true [2023-02-18 17:17:54,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1192 backedges. 220 proven. 75 refuted. 7 times theorem prover too weak. 856 trivial. 34 not checked. [2023-02-18 17:17:54,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:17:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107661405] [2023-02-18 17:17:54,886 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:17:54,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990280467] [2023-02-18 17:17:54,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990280467] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:17:54,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:17:54,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 34 [2023-02-18 17:17:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469300422] [2023-02-18 17:17:54,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:17:54,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-18 17:17:54,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:17:54,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-18 17:17:54,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=833, Unknown=11, NotChecked=62, Total=1122 [2023-02-18 17:17:54,889 INFO L87 Difference]: Start difference. First operand 2684 states and 3590 transitions. Second operand has 34 states, 32 states have (on average 2.46875) internal successors, (79), 29 states have internal predecessors, (79), 18 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (54), 19 states have call predecessors, (54), 17 states have call successors, (54) [2023-02-18 17:17:58,291 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 [] [2023-02-18 17:18:00,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:02,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:06,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:13,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:16,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:19,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:21,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:24,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:26,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:27,674 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:32,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:34,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:36,952 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:41,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:43,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:47,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:49,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:52,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:57,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:18:59,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:19:07,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:19:09,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:19:11,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:19:18,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:19:20,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:19:22,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:19:24,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:19:34,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:19:40,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:19:42,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:00,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:02,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:05,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:09,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.93s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:11,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:14,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:18,642 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 [] [2023-02-18 17:20:20,788 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)))) (.cse6 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~k~0#1|))))) (let ((.cse12 (* |c_ULTIMATE.start_main_~x~0#1| .cse6)) (.cse13 (* |c_ULTIMATE.start_main_~y~0#1| .cse4))) (let ((.cse31 (= 0 (+ (+ (+ (+ (+ (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~xy~0#1|) (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~yy~0#1|)) (- (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~x~0#1|))) (- (* |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~y~0#1|))) |c_ULTIMATE.start_main_~b~0#1|))) (.cse10 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse8 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse7 (+ .cse12 .cse13))) (let ((.cse5 (+ 1 (+ 1 0))) (.cse0 (>= |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~b~0#1|)) (.cse14 (= 0 (+ (+ (+ (+ (+ (* .cse6 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse4 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse6 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse7 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse4 |c_ULTIMATE.start_main_~y~0#1|))) .cse7))) (.cse15 (not (= .cse7 |c_ULTIMATE.start_main_~c~0#1|))) (.cse16 (not (= |c_ULTIMATE.start_main_~b~0#1| (+ .cse10 .cse8)))) (.cse25 (not .cse31)) (.cse21 (- |c_ULTIMATE.start_main_~b~0#1|))) (and (let ((.cse9 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| .cse6)) (.cse11 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| .cse4))) (or .cse0 (= 0 (let ((.cse1 (+ |c_ULTIMATE.start_main_~q~0#1| (- (* .cse6 .cse5)))) (.cse2 (+ |c_ULTIMATE.start_main_~s~0#1| (- (* .cse4 .cse5))))) (let ((.cse3 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse1) (* |c_ULTIMATE.start_main_~y~0#1| .cse2)))) (+ (+ (+ (+ (+ (* .cse1 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse2 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse1 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse3 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse2 |c_ULTIMATE.start_main_~y~0#1|))) .cse3)))) (>= (+ (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| 0 .cse6) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| 0 .cse4) .cse7 .cse8 .cse9 .cse10 .cse11) (+ (- .cse12) (- .cse13))) .cse7) (not .cse14) (not (= (+ (* 2 .cse7) .cse8 .cse9 .cse10 .cse11) |c_ULTIMATE.start_main_~b~0#1|)) .cse15)) (let ((.cse17 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse18 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse19 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse20 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|))) (or .cse16 (>= (+ (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| 0 |c_ULTIMATE.start_main_~q~0#1|) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| 0 |c_ULTIMATE.start_main_~s~0#1|) |c_ULTIMATE.start_main_~b~0#1| .cse17 .cse18 .cse19 .cse20) .cse21) |c_ULTIMATE.start_main_~b~0#1|) (= 0 (let ((.cse22 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| .cse5)))) (.cse23 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| .cse5))))) (let ((.cse24 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse22) (* |c_ULTIMATE.start_main_~y~0#1| .cse23)))) (+ (+ (+ (+ (+ (* .cse22 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse23 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse22 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse24 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse23 |c_ULTIMATE.start_main_~y~0#1|))) .cse24)))) .cse25 (not (= (+ (* 2 |c_ULTIMATE.start_main_~b~0#1|) .cse17 .cse18 .cse19 .cse20) |c_ULTIMATE.start_main_~a~0#1|)))) (or .cse0 .cse14 .cse15) (let ((.cse30 (+ 1 |c_ULTIMATE.start_main_~k~0#1|))) (let ((.cse26 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| .cse30)))) (.cse27 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| .cse30))))) (let ((.cse28 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse26) (* |c_ULTIMATE.start_main_~y~0#1| .cse27))) (.cse29 (+ |c_ULTIMATE.start_main_~c~0#1| .cse21))) (or .cse16 (= 0 (+ (+ (+ (+ (+ (* .cse26 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse27 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse26 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse28 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse27 |c_ULTIMATE.start_main_~y~0#1|))) .cse28)) (not (= .cse28 .cse29)) .cse25 (>= .cse29 |c_ULTIMATE.start_main_~b~0#1|))))) (>= |c_ULTIMATE.start_main_~x~0#1| 1) .cse31))))) is different from false [2023-02-18 17:20:22,864 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 [] [2023-02-18 17:20:24,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:26,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:29,965 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:31,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:34,662 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse29 (+ 1 |c_ULTIMATE.start_main_~k~0#1|))) (let ((.cse23 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| .cse29)))) (.cse22 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| .cse29)))) (.cse4 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)))) (.cse6 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~k~0#1|))))) (let ((.cse12 (* |c_ULTIMATE.start_main_~x~0#1| .cse6)) (.cse13 (* |c_ULTIMATE.start_main_~y~0#1| .cse4)) (.cse24 (* |c_ULTIMATE.start_main_~x~0#1| .cse22)) (.cse25 (* |c_ULTIMATE.start_main_~y~0#1| .cse23))) (let ((.cse18 (+ |c_ULTIMATE.start_main_~c~0#1| (- |c_ULTIMATE.start_main_~b~0#1|))) (.cse19 (+ .cse24 .cse25)) (.cse7 (+ .cse12 .cse13))) (let ((.cse0 (>= |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~b~0#1|)) (.cse14 (= 0 (+ (+ (+ (+ (+ (* .cse6 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse4 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse6 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse7 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse4 |c_ULTIMATE.start_main_~y~0#1|))) .cse7))) (.cse15 (not (= .cse7 |c_ULTIMATE.start_main_~c~0#1|))) (.cse16 (= 0 (+ (+ (+ (+ (+ (* .cse22 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse23 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse22 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse19 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse23 |c_ULTIMATE.start_main_~y~0#1|))) .cse19))) (.cse8 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse10 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse17 (not (= .cse19 .cse18))) (.cse5 (+ 1 (+ 1 0)))) (and (let ((.cse9 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| .cse6)) (.cse11 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| .cse4))) (or .cse0 (= 0 (let ((.cse1 (+ |c_ULTIMATE.start_main_~q~0#1| (- (* .cse6 .cse5)))) (.cse2 (+ |c_ULTIMATE.start_main_~s~0#1| (- (* .cse4 .cse5))))) (let ((.cse3 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse1) (* |c_ULTIMATE.start_main_~y~0#1| .cse2)))) (+ (+ (+ (+ (+ (* .cse1 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse2 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse1 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse3 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse2 |c_ULTIMATE.start_main_~y~0#1|))) .cse3)))) (>= (+ (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| 0 .cse6) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| 0 .cse4) .cse7 .cse8 .cse9 .cse10 .cse11) (+ (- .cse12) (- .cse13))) .cse7) (not .cse14) (not (= (+ (* 2 .cse7) .cse8 .cse9 .cse10 .cse11) |c_ULTIMATE.start_main_~b~0#1|)) .cse15)) (or .cse0 .cse14 .cse15) (or (not (= |c_ULTIMATE.start_main_~b~0#1| (+ .cse10 .cse8))) .cse16 .cse17 (not (= 0 (+ (+ (+ (+ (+ (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~xy~0#1|) (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~yy~0#1|)) (- (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~x~0#1|))) (- (* |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~y~0#1|))) |c_ULTIMATE.start_main_~b~0#1|))) (>= .cse18 |c_ULTIMATE.start_main_~b~0#1|)) (let ((.cse20 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| .cse22)) (.cse21 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| .cse23))) (or (not .cse16) (not (= (+ (* 2 .cse19) .cse8 .cse20 .cse10 .cse21) |c_ULTIMATE.start_main_~b~0#1|)) (>= (+ (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| 0 .cse22) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| 0 .cse23) .cse19 .cse8 .cse20 .cse10 .cse21) (+ (- .cse24) (- .cse25))) .cse19) .cse17 (>= .cse19 |c_ULTIMATE.start_main_~b~0#1|) (= 0 (let ((.cse26 (+ |c_ULTIMATE.start_main_~q~0#1| (- (* .cse22 .cse5)))) (.cse27 (+ |c_ULTIMATE.start_main_~s~0#1| (- (* .cse23 .cse5))))) (let ((.cse28 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse26) (* |c_ULTIMATE.start_main_~y~0#1| .cse27)))) (+ (+ (+ (+ (+ (* .cse26 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse27 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse26 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse28 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse27 |c_ULTIMATE.start_main_~y~0#1|))) .cse28)))))))))))) is different from true [2023-02-18 17:20:54,851 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 [] [2023-02-18 17:20:56,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:20:58,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:04,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:07,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:09,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:11,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:13,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:15,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:17,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:18,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:20,916 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:23,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:24,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:26,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:29,003 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:31,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:33,093 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)))) (.cse6 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~k~0#1|))))) (let ((.cse12 (* |c_ULTIMATE.start_main_~x~0#1| .cse6)) (.cse13 (* |c_ULTIMATE.start_main_~y~0#1| .cse4))) (let ((.cse7 (+ .cse12 .cse13))) (let ((.cse0 (>= |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~b~0#1|)) (.cse14 (= 0 (+ (+ (+ (+ (+ (* .cse6 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse4 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse6 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse7 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse4 |c_ULTIMATE.start_main_~y~0#1|))) .cse7))) (.cse15 (not (= .cse7 |c_ULTIMATE.start_main_~c~0#1|)))) (and (let ((.cse8 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse9 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| .cse6)) (.cse10 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse11 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| .cse4))) (or .cse0 (= 0 (let ((.cse5 (+ 1 (+ 1 0)))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~q~0#1| (- (* .cse6 .cse5)))) (.cse2 (+ |c_ULTIMATE.start_main_~s~0#1| (- (* .cse4 .cse5))))) (let ((.cse3 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse1) (* |c_ULTIMATE.start_main_~y~0#1| .cse2)))) (+ (+ (+ (+ (+ (* .cse1 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse2 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse1 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse3 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse2 |c_ULTIMATE.start_main_~y~0#1|))) .cse3))))) (>= (+ (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| 0 .cse6) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| 0 .cse4) .cse7 .cse8 .cse9 .cse10 .cse11) (+ (- .cse12) (- .cse13))) .cse7) (not .cse14) (not (= (+ (* 2 .cse7) .cse8 .cse9 .cse10 .cse11) |c_ULTIMATE.start_main_~b~0#1|)) .cse15)) (or .cse0 .cse14 (not (= 0 (+ (+ (+ (+ (+ (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~xy~0#1|) (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~yy~0#1|)) (- (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~x~0#1|))) (- (* |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~y~0#1|))) |c_ULTIMATE.start_main_~b~0#1|))) .cse15)))))) is different from true [2023-02-18 17:21:35,125 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 [] [2023-02-18 17:21:37,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:39,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:41,844 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)))) (.cse6 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~k~0#1|))))) (let ((.cse12 (* |c_ULTIMATE.start_main_~x~0#1| .cse6)) (.cse13 (* |c_ULTIMATE.start_main_~y~0#1| .cse4))) (let ((.cse7 (+ .cse12 .cse13))) (let ((.cse0 (>= |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~b~0#1|)) (.cse14 (= 0 (+ (+ (+ (+ (+ (* .cse6 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse4 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse6 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse7 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse4 |c_ULTIMATE.start_main_~y~0#1|))) .cse7))) (.cse15 (not (= .cse7 |c_ULTIMATE.start_main_~c~0#1|)))) (and (let ((.cse8 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse9 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| .cse6)) (.cse10 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse11 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| .cse4))) (or .cse0 (= 0 (let ((.cse5 (+ 1 (+ 1 0)))) (let ((.cse1 (+ |c_ULTIMATE.start_main_~q~0#1| (- (* .cse6 .cse5)))) (.cse2 (+ |c_ULTIMATE.start_main_~s~0#1| (- (* .cse4 .cse5))))) (let ((.cse3 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse1) (* |c_ULTIMATE.start_main_~y~0#1| .cse2)))) (+ (+ (+ (+ (+ (* .cse1 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse2 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse1 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse3 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse2 |c_ULTIMATE.start_main_~y~0#1|))) .cse3))))) (>= (+ (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| 0 .cse6) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| 0 .cse4) .cse7 .cse8 .cse9 .cse10 .cse11) (+ (- .cse12) (- .cse13))) .cse7) (not .cse14) (not (= (+ (* 2 .cse7) .cse8 .cse9 .cse10 .cse11) |c_ULTIMATE.start_main_~b~0#1|)) .cse15)) (or .cse0 .cse14 .cse15)))))) is different from true [2023-02-18 17:21:47,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:50,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:55,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:21:59,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:01,949 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:03,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:06,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:20,860 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:29,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:31,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:34,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:36,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:38,925 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:51,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:22:56,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:00,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.83s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:02,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:05,259 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 [] [2023-02-18 17:23:07,299 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse45 (+ 1 |c_ULTIMATE.start_main_~k~0#1|))) (let ((.cse34 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| .cse45)))) (.cse33 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| .cse45))))) (let ((.cse35 (* |c_ULTIMATE.start_main_~x~0#1| .cse33)) (.cse36 (* |c_ULTIMATE.start_main_~y~0#1| .cse34)) (.cse5 (- |c_ULTIMATE.start_main_~b~0#1|))) (let ((.cse22 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse20 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) (.cse29 (+ 1 0)) (.cse16 (+ |c_ULTIMATE.start_main_~c~0#1| .cse5)) (.cse30 (+ .cse35 .cse36))) (let ((.cse14 (= 0 (+ (+ (+ (+ (+ (* .cse33 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse34 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse33 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse30 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse34 |c_ULTIMATE.start_main_~y~0#1|))) .cse30))) (.cse15 (not (= .cse30 .cse16))) (.cse9 (+ 1 .cse29)) (.cse0 (not (= |c_ULTIMATE.start_main_~b~0#1| (+ .cse22 .cse20)))) (.cse10 (not (= 0 (+ (+ (+ (+ (+ (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~xy~0#1|) (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~yy~0#1|)) (- (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~x~0#1|))) (- (* |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~y~0#1|))) (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~y~0#1|))) |c_ULTIMATE.start_main_~b~0#1|)))) (.cse1 (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~r~0#1|)) (.cse2 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|)) (.cse3 (* |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~p~0#1|)) (.cse4 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|))) (and (or .cse0 (>= (+ (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| 0 |c_ULTIMATE.start_main_~q~0#1|) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| 0 |c_ULTIMATE.start_main_~s~0#1|) |c_ULTIMATE.start_main_~b~0#1| .cse1 .cse2 .cse3 .cse4) .cse5) |c_ULTIMATE.start_main_~b~0#1|) (= 0 (let ((.cse6 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| .cse9)))) (.cse7 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| .cse9))))) (let ((.cse8 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse6) (* |c_ULTIMATE.start_main_~y~0#1| .cse7)))) (+ (+ (+ (+ (+ (* .cse6 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse7 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse6 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse8 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse7 |c_ULTIMATE.start_main_~y~0#1|))) .cse8)))) .cse10 (not (= (+ (* 2 |c_ULTIMATE.start_main_~b~0#1|) .cse1 .cse2 .cse3 .cse4) |c_ULTIMATE.start_main_~a~0#1|))) (let ((.cse11 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~k~0#1|)))) (.cse12 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|))))) (let ((.cse13 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse11) (* |c_ULTIMATE.start_main_~y~0#1| .cse12)))) (or (>= |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~b~0#1|) (= 0 (+ (+ (+ (+ (+ (* .cse11 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse12 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse11 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse13 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse12 |c_ULTIMATE.start_main_~y~0#1|))) .cse13)) (not (= .cse13 |c_ULTIMATE.start_main_~c~0#1|))))) (or .cse0 .cse14 .cse15 .cse10 (>= .cse16 |c_ULTIMATE.start_main_~b~0#1|)) (>= |c_ULTIMATE.start_main_~x~0#1| 1) (let ((.cse19 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| .cse29)))) (.cse18 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| .cse29))))) (let ((.cse27 (* |c_ULTIMATE.start_main_~x~0#1| .cse18)) (.cse28 (* |c_ULTIMATE.start_main_~y~0#1| .cse19))) (let ((.cse21 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| .cse18)) (.cse23 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| .cse19)) (.cse17 (+ .cse27 .cse28))) (or (>= .cse17 |c_ULTIMATE.start_main_~b~0#1|) (not (= (+ |c_ULTIMATE.start_main_~b~0#1| .cse1 (* (- 1) |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~q~0#1|) .cse3 (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~s~0#1|)) |c_ULTIMATE.start_main_~a~0#1|)) (not (= 0 (+ (+ (+ (+ (+ (* .cse18 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse19 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse18 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse17 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse19 |c_ULTIMATE.start_main_~y~0#1|))) .cse17))) (not (= (+ (* 2 .cse17) .cse20 .cse21 .cse22 .cse23) |c_ULTIMATE.start_main_~b~0#1|)) (= 0 (let ((.cse24 (+ |c_ULTIMATE.start_main_~q~0#1| (- (* .cse18 .cse9)))) (.cse25 (+ |c_ULTIMATE.start_main_~s~0#1| (- (* .cse19 .cse9))))) (let ((.cse26 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse24) (* |c_ULTIMATE.start_main_~y~0#1| .cse25)))) (+ (+ (+ (+ (+ (* .cse24 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse25 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse24 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse26 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse25 |c_ULTIMATE.start_main_~y~0#1|))) .cse26)))) (>= (+ (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| 0 .cse18) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| 0 .cse19) .cse17 .cse20 .cse21 .cse22 .cse23) (+ (- .cse27) (- .cse28))) .cse17))))) (let ((.cse31 (* (- 2) |c_ULTIMATE.start_main_~x~0#1| .cse33)) (.cse32 (* (- 2) |c_ULTIMATE.start_main_~y~0#1| .cse34))) (or (not .cse14) (not (= (+ (* 2 .cse30) .cse20 .cse31 .cse22 .cse32) |c_ULTIMATE.start_main_~b~0#1|)) (>= (+ (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| 0 .cse33) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| 0 .cse34) .cse30 .cse20 .cse31 .cse22 .cse32) (+ (- .cse35) (- .cse36))) .cse30) .cse15 (>= .cse30 |c_ULTIMATE.start_main_~b~0#1|) (= 0 (let ((.cse37 (+ |c_ULTIMATE.start_main_~q~0#1| (- (* .cse33 .cse9)))) (.cse38 (+ |c_ULTIMATE.start_main_~s~0#1| (- (* .cse34 .cse9))))) (let ((.cse39 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse37) (* |c_ULTIMATE.start_main_~y~0#1| .cse38)))) (+ (+ (+ (+ (+ (* .cse37 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse38 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse37 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse39 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse38 |c_ULTIMATE.start_main_~y~0#1|))) .cse39)))))) (let ((.cse40 (+ (* (- 1) |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~q~0#1|) (* (- 1) |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~s~0#1|) |c_ULTIMATE.start_main_~b~0#1| .cse1 .cse2 .cse3 .cse4))) (or .cse0 (not (= .cse40 .cse16)) .cse10 (>= (+ .cse40 .cse5) |c_ULTIMATE.start_main_~b~0#1|) (= 0 (let ((.cse44 (+ 1 .cse45))) (let ((.cse41 (+ |c_ULTIMATE.start_main_~p~0#1| (- (* |c_ULTIMATE.start_main_~q~0#1| .cse44)))) (.cse42 (+ |c_ULTIMATE.start_main_~r~0#1| (- (* |c_ULTIMATE.start_main_~s~0#1| .cse44))))) (let ((.cse43 (+ (* |c_ULTIMATE.start_main_~x~0#1| .cse41) (* |c_ULTIMATE.start_main_~y~0#1| .cse42)))) (+ (+ (+ (+ (+ (* .cse41 |c_ULTIMATE.start_main_~xy~0#1|) (* .cse42 |c_ULTIMATE.start_main_~yy~0#1|)) (- (* .cse41 |c_ULTIMATE.start_main_~x~0#1|))) (- (* .cse43 |c_ULTIMATE.start_main_~y~0#1|))) (- (* .cse42 |c_ULTIMATE.start_main_~y~0#1|))) .cse43))))))))))))) is different from true [2023-02-18 17:23:09,997 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 [] [2023-02-18 17:23:12,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:27,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:30,026 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:31,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:33,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:35,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:37,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:39,662 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:41,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:43,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:45,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:48,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:51,079 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:54,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:57,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:23:59,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:01,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:04,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:07,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:10,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:13,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:15,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:18,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:20,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:23,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:26,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:28,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:35,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:38,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:40,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:46,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:48,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:50,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:24:52,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:19,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:21,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:23,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:25,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:27,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:38,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:40,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:42,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:44,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:46,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:48,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:50,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:52,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:55,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:25:57,294 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:26:23,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:26:25,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:26:28,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:26:30,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:26:32,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:26:51,753 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:27:03,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:27:13,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:27:16,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:27:18,970 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 [] [2023-02-18 17:27:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:27:20,038 INFO L93 Difference]: Finished difference Result 3974 states and 5526 transitions. [2023-02-18 17:27:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-02-18 17:27:20,039 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 2.46875) internal successors, (79), 29 states have internal predecessors, (79), 18 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (54), 19 states have call predecessors, (54), 17 states have call successors, (54) Word has length 170 [2023-02-18 17:27:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:27:20,052 INFO L225 Difference]: With dead ends: 3974 [2023-02-18 17:27:20,053 INFO L226 Difference]: Without dead ends: 3970 [2023-02-18 17:27:20,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 411 GetRequests, 302 SyntacticMatches, 17 SemanticMatches, 92 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 2877 ImplicationChecksByTransitivity, 263.8s TimeCoverageRelationStatistics Valid=1836, Invalid=5761, Unknown=83, NotChecked=1062, Total=8742 [2023-02-18 17:27:20,056 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 327 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 2245 mSolverCounterSat, 497 mSolverCounterUnsat, 127 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 329.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 3115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 2245 IncrementalHoareTripleChecker+Invalid, 127 IncrementalHoareTripleChecker+Unknown, 246 IncrementalHoareTripleChecker+Unchecked, 329.4s IncrementalHoareTripleChecker+Time [2023-02-18 17:27:20,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 546 Invalid, 3115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 2245 Invalid, 127 Unknown, 246 Unchecked, 329.4s Time] [2023-02-18 17:27:20,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3970 states. [2023-02-18 17:27:23,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3970 to 3852. [2023-02-18 17:27:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3852 states, 2361 states have (on average 1.227445997458704) internal successors, (2898), 2403 states have internal predecessors, (2898), 1247 states have call successors, (1247), 244 states have call predecessors, (1247), 243 states have return successors, (1240), 1204 states have call predecessors, (1240), 1240 states have call successors, (1240) [2023-02-18 17:27:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3852 states to 3852 states and 5385 transitions. [2023-02-18 17:27:23,501 INFO L78 Accepts]: Start accepts. Automaton has 3852 states and 5385 transitions. Word has length 170 [2023-02-18 17:27:23,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:27:23,501 INFO L495 AbstractCegarLoop]: Abstraction has 3852 states and 5385 transitions. [2023-02-18 17:27:23,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 2.46875) internal successors, (79), 29 states have internal predecessors, (79), 18 states have call successors, (55), 3 states have call predecessors, (55), 3 states have return successors, (54), 19 states have call predecessors, (54), 17 states have call successors, (54) [2023-02-18 17:27:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3852 states and 5385 transitions. [2023-02-18 17:27:23,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-02-18 17:27:23,504 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:27:23,504 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:27:23,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-02-18 17:27:23,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:27:23,710 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:27:23,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:27:23,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1918218936, now seen corresponding path program 4 times [2023-02-18 17:27:23,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:27:23,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621736123] [2023-02-18 17:27:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:27:23,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:27:23,717 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:27:23,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716939431] [2023-02-18 17:27:23,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 17:27:23,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:27:23,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:27:23,720 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 17:27:23,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-02-18 17:27:23,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 17:27:23,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 17:27:23,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-18 17:27:23,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:27:24,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 48 proven. 124 refuted. 0 times theorem prover too weak. 1119 trivial. 0 not checked. [2023-02-18 17:27:24,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 17:27:28,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 48 proven. 115 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-02-18 17:27:28,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 17:27:28,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621736123] [2023-02-18 17:27:28,273 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 17:27:28,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716939431] [2023-02-18 17:27:28,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716939431] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 17:27:28,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 17:27:28,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15] total 31 [2023-02-18 17:27:28,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978623515] [2023-02-18 17:27:28,273 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 17:27:28,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-18 17:27:28,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 17:27:28,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-18 17:27:28,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2023-02-18 17:27:28,275 INFO L87 Difference]: Start difference. First operand 3852 states and 5385 transitions. Second operand has 31 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 18 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (56), 16 states have call predecessors, (56), 16 states have call successors, (56) [2023-02-18 17:27:57,367 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 [] [2023-02-18 17:28:11,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:28:13,017 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:28:16,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:28:38,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:28:42,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-18 17:28:44,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 17:28:44,315 INFO L93 Difference]: Finished difference Result 4063 states and 5678 transitions. [2023-02-18 17:28:44,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-18 17:28:44,316 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 18 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (56), 16 states have call predecessors, (56), 16 states have call successors, (56) Word has length 176 [2023-02-18 17:28:44,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 17:28:44,331 INFO L225 Difference]: With dead ends: 4063 [2023-02-18 17:28:44,331 INFO L226 Difference]: Without dead ends: 4035 [2023-02-18 17:28:44,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 320 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1923 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=1433, Invalid=6399, Unknown=0, NotChecked=0, Total=7832 [2023-02-18 17:28:44,335 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 355 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 3008 mSolverCounterSat, 557 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 59.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1348 SdHoareTripleChecker+Invalid, 3566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 3008 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.7s IncrementalHoareTripleChecker+Time [2023-02-18 17:28:44,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1348 Invalid, 3566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [557 Valid, 3008 Invalid, 1 Unknown, 0 Unchecked, 59.7s Time] [2023-02-18 17:28:44,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4035 states. [2023-02-18 17:28:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4035 to 3936. [2023-02-18 17:28:48,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3936 states, 2410 states have (on average 1.2236514522821578) internal successors, (2949), 2450 states have internal predecessors, (2949), 1278 states have call successors, (1278), 248 states have call predecessors, (1278), 247 states have return successors, (1272), 1237 states have call predecessors, (1272), 1272 states have call successors, (1272) [2023-02-18 17:28:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3936 states to 3936 states and 5499 transitions. [2023-02-18 17:28:48,012 INFO L78 Accepts]: Start accepts. Automaton has 3936 states and 5499 transitions. Word has length 176 [2023-02-18 17:28:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 17:28:48,012 INFO L495 AbstractCegarLoop]: Abstraction has 3936 states and 5499 transitions. [2023-02-18 17:28:48,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 2.6206896551724137) internal successors, (76), 28 states have internal predecessors, (76), 18 states have call successors, (57), 3 states have call predecessors, (57), 2 states have return successors, (56), 16 states have call predecessors, (56), 16 states have call successors, (56) [2023-02-18 17:28:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3936 states and 5499 transitions. [2023-02-18 17:28:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2023-02-18 17:28:48,015 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 17:28:48,015 INFO L195 NwaCegarLoop]: trace histogram [25, 24, 24, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 17:28:48,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-02-18 17:28:48,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-02-18 17:28:48,221 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 17:28:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 17:28:48,222 INFO L85 PathProgramCache]: Analyzing trace with hash 2015575860, now seen corresponding path program 5 times [2023-02-18 17:28:48,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 17:28:48,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262567759] [2023-02-18 17:28:48,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 17:28:48,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 17:28:48,229 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 17:28:48,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [803798496] [2023-02-18 17:28:48,229 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 17:28:48,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 17:28:48,230 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 17:28:48,231 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 17:28:48,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-02-18 17:28:48,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-02-18 17:28:48,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 17:28:48,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-18 17:28:48,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 17:28:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 48 proven. 115 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2023-02-18 17:28:48,559 INFO L328 TraceCheckSpWp]: Computing backward predicates...