./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Binomial.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:14:14,203 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:14:14,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:14:14,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:14:14,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:14:14,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:14:14,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:14:14,233 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:14:14,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:14:14,235 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:14:14,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:14:14,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:14:14,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:14:14,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:14:14,239 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:14:14,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:14:14,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:14:14,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:14:14,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:14:14,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:14:14,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:14:14,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:14:14,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:14:14,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:14:14,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:14:14,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:14:14,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:14:14,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:14:14,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:14:14,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:14:14,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:14:14,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:14:14,256 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:14:14,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:14:14,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:14:14,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:14:14,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:14:14,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:14:14,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:14:14,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:14:14,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:14:14,261 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-06 17:14:14,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:14:14,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:14:14,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:14:14,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:14:14,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:14:14,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:14:14,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:14:14,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:14:14,280 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:14:14,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:14:14,280 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 17:14:14,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:14:14,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:14:14,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:14:14,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:14:14,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:14:14,281 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-06 17:14:14,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:14:14,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:14:14,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:14:14,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:14:14,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:14:14,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:14:14,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:14:14,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:14:14,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:14:14,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:14:14,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:14:14,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:14:14,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:14:14,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:14:14,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2021-12-06 17:14:14,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:14:14,470 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:14:14,472 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:14:14,473 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:14:14,473 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:14:14,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/termination-numeric/Binomial.c [2021-12-06 17:14:14,514 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/data/f7f6d7afa/78e7761619ab4c54a82048cf044b64a0/FLAG66922b4dc [2021-12-06 17:14:14,882 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:14:14,882 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/sv-benchmarks/c/termination-numeric/Binomial.c [2021-12-06 17:14:14,887 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/data/f7f6d7afa/78e7761619ab4c54a82048cf044b64a0/FLAG66922b4dc [2021-12-06 17:14:14,896 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/data/f7f6d7afa/78e7761619ab4c54a82048cf044b64a0 [2021-12-06 17:14:14,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:14:14,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:14:14,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:14:14,901 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:14:14,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:14:14,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:14:14" (1/1) ... [2021-12-06 17:14:14,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10efe605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:14, skipping insertion in model container [2021-12-06 17:14:14,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:14:14" (1/1) ... [2021-12-06 17:14:14,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:14:14,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:14:15,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:14:15,038 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:14:15,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:14:15,063 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:14:15,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15 WrapperNode [2021-12-06 17:14:15,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:14:15,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:14:15,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:14:15,064 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:14:15,070 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (1/1) ... [2021-12-06 17:14:15,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (1/1) ... [2021-12-06 17:14:15,087 INFO L137 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2021-12-06 17:14:15,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:14:15,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:14:15,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:14:15,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:14:15,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (1/1) ... [2021-12-06 17:14:15,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (1/1) ... [2021-12-06 17:14:15,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (1/1) ... [2021-12-06 17:14:15,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (1/1) ... [2021-12-06 17:14:15,099 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (1/1) ... [2021-12-06 17:14:15,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (1/1) ... [2021-12-06 17:14:15,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (1/1) ... [2021-12-06 17:14:15,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:14:15,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:14:15,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:14:15,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:14:15,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (1/1) ... [2021-12-06 17:14:15,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:14:15,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:15,135 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:14:15,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:14:15,176 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2021-12-06 17:14:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2021-12-06 17:14:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2021-12-06 17:14:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2021-12-06 17:14:15,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:14:15,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:14:15,228 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:14:15,230 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:14:15,380 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:14:15,386 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:14:15,386 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 17:14:15,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:14:15 BoogieIcfgContainer [2021-12-06 17:14:15,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:14:15,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:14:15,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:14:15,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:14:15,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:14:14" (1/3) ... [2021-12-06 17:14:15,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a2e0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:14:15, skipping insertion in model container [2021-12-06 17:14:15,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:14:15" (2/3) ... [2021-12-06 17:14:15,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a2e0d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:14:15, skipping insertion in model container [2021-12-06 17:14:15,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:14:15" (3/3) ... [2021-12-06 17:14:15,394 INFO L111 eAbstractionObserver]: Analyzing ICFG Binomial.c [2021-12-06 17:14:15,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:14:15,398 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-12-06 17:14:15,433 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:14:15,439 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:14:15,439 INFO L340 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2021-12-06 17:14:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 50 states have internal predecessors, (58), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 17:14:15,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 17:14:15,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:15,457 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:15,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:15,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:15,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1446708258, now seen corresponding path program 1 times [2021-12-06 17:14:15,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:15,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506716878] [2021-12-06 17:14:15,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:15,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:14:15,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:15,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506716878] [2021-12-06 17:14:15,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506716878] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:15,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:15,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:14:15,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977309816] [2021-12-06 17:14:15,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:15,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:14:15,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:15,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:14:15,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:14:15,621 INFO L87 Difference]: Start difference. First operand has 59 states, 36 states have (on average 1.6111111111111112) internal successors, (58), 50 states have internal predecessors, (58), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:14:15,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:15,644 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2021-12-06 17:14:15,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:14:15,646 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 17:14:15,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:15,653 INFO L225 Difference]: With dead ends: 114 [2021-12-06 17:14:15,653 INFO L226 Difference]: Without dead ends: 56 [2021-12-06 17:14:15,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:14:15,661 INFO L933 BasicCegarLoop]: 68 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, 68 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 [2021-12-06 17:14:15,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:15,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-06 17:14:15,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-06 17:14:15,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 34 states have (on average 1.5) internal successors, (51), 47 states have internal predecessors, (51), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 17:14:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2021-12-06 17:14:15,699 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 8 [2021-12-06 17:14:15,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:15,700 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2021-12-06 17:14:15,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:14:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2021-12-06 17:14:15,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 17:14:15,701 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:15,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:15,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:14:15,702 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:15,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:15,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1446689999, now seen corresponding path program 1 times [2021-12-06 17:14:15,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:15,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516459660] [2021-12-06 17:14:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:15,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:14:15,744 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:15,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516459660] [2021-12-06 17:14:15,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516459660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:15,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:15,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:14:15,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110744996] [2021-12-06 17:14:15,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:15,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:14:15,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:15,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:14:15,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:14:15,748 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:14:15,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:15,794 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2021-12-06 17:14:15,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:14:15,795 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 17:14:15,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:15,796 INFO L225 Difference]: With dead ends: 109 [2021-12-06 17:14:15,796 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 17:14:15,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:15,799 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:15,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 145 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 17:14:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-06 17:14:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.4857142857142858) internal successors, (52), 48 states have internal predecessors, (52), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-06 17:14:15,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2021-12-06 17:14:15,811 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 8 [2021-12-06 17:14:15,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:15,812 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2021-12-06 17:14:15,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:14:15,812 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2021-12-06 17:14:15,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 17:14:15,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:15,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:15,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:14:15,814 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:15,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:15,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1304665248, now seen corresponding path program 1 times [2021-12-06 17:14:15,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:15,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400593917] [2021-12-06 17:14:15,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:15,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:14:15,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:15,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400593917] [2021-12-06 17:14:15,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400593917] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:15,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:15,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:14:15,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134451332] [2021-12-06 17:14:15,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:15,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:14:15,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:15,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:14:15,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:14:15,876 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:14:15,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:15,971 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2021-12-06 17:14:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:14:15,972 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 17:14:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:15,974 INFO L225 Difference]: With dead ends: 155 [2021-12-06 17:14:15,974 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 17:14:15,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:14:15,976 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 52 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:15,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 352 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:15,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 17:14:15,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2021-12-06 17:14:15,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 71 states have internal predecessors, (85), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 17:14:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2021-12-06 17:14:15,990 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 13 [2021-12-06 17:14:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:15,991 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2021-12-06 17:14:15,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:14:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2021-12-06 17:14:15,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 17:14:15,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:15,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:15,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:14:15,992 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:15,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:15,993 INFO L85 PathProgramCache]: Analyzing trace with hash 616970978, now seen corresponding path program 1 times [2021-12-06 17:14:15,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:15,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17071575] [2021-12-06 17:14:15,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:15,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:14:16,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:16,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17071575] [2021-12-06 17:14:16,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17071575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:16,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:16,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:14:16,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670585304] [2021-12-06 17:14:16,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:16,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:14:16,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:16,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:14:16,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:14:16,020 INFO L87 Difference]: Start difference. First operand 87 states and 107 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:14:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:16,058 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2021-12-06 17:14:16,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:14:16,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-06 17:14:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:16,060 INFO L225 Difference]: With dead ends: 186 [2021-12-06 17:14:16,060 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 17:14:16,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:16,064 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 34 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:16,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 168 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:16,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 17:14:16,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2021-12-06 17:14:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 72 states have internal predecessors, (86), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-06 17:14:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2021-12-06 17:14:16,078 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 13 [2021-12-06 17:14:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:16,079 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2021-12-06 17:14:16,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:14:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2021-12-06 17:14:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 17:14:16,080 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:16,080 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:16,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 17:14:16,081 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:16,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:16,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1503380349, now seen corresponding path program 1 times [2021-12-06 17:14:16,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:16,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344351078] [2021-12-06 17:14:16,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:16,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:14:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:14:16,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:16,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344351078] [2021-12-06 17:14:16,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344351078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:16,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:16,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:14:16,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221483593] [2021-12-06 17:14:16,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:16,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:14:16,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:16,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:14:16,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:14:16,142 INFO L87 Difference]: Start difference. First operand 88 states and 108 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:14:16,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:16,206 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2021-12-06 17:14:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:14:16,207 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-06 17:14:16,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:16,209 INFO L225 Difference]: With dead ends: 226 [2021-12-06 17:14:16,209 INFO L226 Difference]: Without dead ends: 145 [2021-12-06 17:14:16,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:14:16,211 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 43 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:16,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 333 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:16,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-06 17:14:16,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2021-12-06 17:14:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.4705882352941178) internal successors, (125), 100 states have internal predecessors, (125), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-06 17:14:16,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2021-12-06 17:14:16,227 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 19 [2021-12-06 17:14:16,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:16,227 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2021-12-06 17:14:16,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-06 17:14:16,227 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2021-12-06 17:14:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 17:14:16,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:16,228 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:16,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 17:14:16,229 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:16,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:16,229 INFO L85 PathProgramCache]: Analyzing trace with hash -715516421, now seen corresponding path program 1 times [2021-12-06 17:14:16,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:16,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494679509] [2021-12-06 17:14:16,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:16,230 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:16,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:14:16,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:14:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:14:16,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:16,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494679509] [2021-12-06 17:14:16,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494679509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:16,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:16,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:14:16,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294972120] [2021-12-06 17:14:16,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:16,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:14:16,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:16,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:14:16,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:14:16,278 INFO L87 Difference]: Start difference. First operand 125 states and 163 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:14:16,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:16,331 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2021-12-06 17:14:16,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:14:16,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-12-06 17:14:16,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:16,333 INFO L225 Difference]: With dead ends: 149 [2021-12-06 17:14:16,333 INFO L226 Difference]: Without dead ends: 148 [2021-12-06 17:14:16,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:14:16,335 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 63 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:16,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 277 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-06 17:14:16,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2021-12-06 17:14:16,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 85 states have (on average 1.4588235294117646) internal successors, (124), 100 states have internal predecessors, (124), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 17 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-06 17:14:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2021-12-06 17:14:16,355 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 22 [2021-12-06 17:14:16,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:16,355 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2021-12-06 17:14:16,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:14:16,355 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2021-12-06 17:14:16,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 17:14:16,356 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:16,356 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:16,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 17:14:16,357 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:16,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:16,357 INFO L85 PathProgramCache]: Analyzing trace with hash -706172517, now seen corresponding path program 1 times [2021-12-06 17:14:16,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:16,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948666540] [2021-12-06 17:14:16,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:16,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:14:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:14:16,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:14:16,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:16,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948666540] [2021-12-06 17:14:16,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948666540] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:16,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:16,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:14:16,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609149593] [2021-12-06 17:14:16,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:16,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:14:16,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:16,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:14:16,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:14:16,410 INFO L87 Difference]: Start difference. First operand 125 states and 162 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:14:16,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:16,463 INFO L93 Difference]: Finished difference Result 163 states and 200 transitions. [2021-12-06 17:14:16,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:14:16,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-12-06 17:14:16,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:16,466 INFO L225 Difference]: With dead ends: 163 [2021-12-06 17:14:16,466 INFO L226 Difference]: Without dead ends: 162 [2021-12-06 17:14:16,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:14:16,467 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 61 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:16,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 264 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-12-06 17:14:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 140. [2021-12-06 17:14:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 96 states have (on average 1.4270833333333333) internal successors, (137), 111 states have internal predecessors, (137), 22 states have call successors, (22), 8 states have call predecessors, (22), 8 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 17:14:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 181 transitions. [2021-12-06 17:14:16,485 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 181 transitions. Word has length 23 [2021-12-06 17:14:16,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:16,485 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 181 transitions. [2021-12-06 17:14:16,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:14:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 181 transitions. [2021-12-06 17:14:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 17:14:16,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:16,486 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:16,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 17:14:16,487 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:16,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:16,487 INFO L85 PathProgramCache]: Analyzing trace with hash -131105574, now seen corresponding path program 1 times [2021-12-06 17:14:16,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:16,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118517886] [2021-12-06 17:14:16,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:16,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 17:14:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 17:14:16,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,542 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 17:14:16,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:16,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118517886] [2021-12-06 17:14:16,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118517886] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:16,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:16,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:14:16,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601952098] [2021-12-06 17:14:16,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:16,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:14:16,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:16,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:14:16,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:14:16,544 INFO L87 Difference]: Start difference. First operand 140 states and 181 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:14:16,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:16,620 INFO L93 Difference]: Finished difference Result 292 states and 376 transitions. [2021-12-06 17:14:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:14:16,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2021-12-06 17:14:16,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:16,622 INFO L225 Difference]: With dead ends: 292 [2021-12-06 17:14:16,622 INFO L226 Difference]: Without dead ends: 168 [2021-12-06 17:14:16,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:14:16,623 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 64 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:16,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 375 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:16,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-06 17:14:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2021-12-06 17:14:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 99 states have (on average 1.4141414141414141) internal successors, (140), 114 states have internal predecessors, (140), 22 states have call successors, (22), 9 states have call predecessors, (22), 9 states have return successors, (22), 20 states have call predecessors, (22), 22 states have call successors, (22) [2021-12-06 17:14:16,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2021-12-06 17:14:16,634 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 27 [2021-12-06 17:14:16,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:16,635 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2021-12-06 17:14:16,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-06 17:14:16,635 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2021-12-06 17:14:16,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 17:14:16,636 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:16,636 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:16,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 17:14:16,636 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:16,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:16,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1641411648, now seen corresponding path program 1 times [2021-12-06 17:14:16,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:16,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602193702] [2021-12-06 17:14:16,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:16,637 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:16,644 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:16,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138129857] [2021-12-06 17:14:16,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:16,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:16,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:16,646 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:16,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:14:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:16,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:14:16,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:16,741 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 17:14:16,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:16,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:16,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602193702] [2021-12-06 17:14:16,741 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:16,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138129857] [2021-12-06 17:14:16,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138129857] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:16,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:16,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:14:16,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006744182] [2021-12-06 17:14:16,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:16,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:14:16,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:16,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:14:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:16,743 INFO L87 Difference]: Start difference. First operand 144 states and 184 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:14:16,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:16,784 INFO L93 Difference]: Finished difference Result 203 states and 281 transitions. [2021-12-06 17:14:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:14:16,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2021-12-06 17:14:16,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:16,786 INFO L225 Difference]: With dead ends: 203 [2021-12-06 17:14:16,786 INFO L226 Difference]: Without dead ends: 201 [2021-12-06 17:14:16,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:16,787 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:16,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 211 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:16,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-06 17:14:16,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2021-12-06 17:14:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 121 states have (on average 1.3553719008264462) internal successors, (164), 133 states have internal predecessors, (164), 25 states have call successors, (25), 9 states have call predecessors, (25), 10 states have return successors, (39), 27 states have call predecessors, (39), 25 states have call successors, (39) [2021-12-06 17:14:16,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2021-12-06 17:14:16,798 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 30 [2021-12-06 17:14:16,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:16,798 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2021-12-06 17:14:16,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:14:16,799 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2021-12-06 17:14:16,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 17:14:16,799 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:16,799 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-06 17:14:16,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:14:17,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:17,001 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:17,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1143594174, now seen corresponding path program 1 times [2021-12-06 17:14:17,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:17,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49658398] [2021-12-06 17:14:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:17,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:17,028 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:17,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2039229093] [2021-12-06 17:14:17,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:17,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:17,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:17,033 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:17,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:14:17,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:17,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:14:17,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 17:14:17,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:17,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:17,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49658398] [2021-12-06 17:14:17,543 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:17,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039229093] [2021-12-06 17:14:17,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039229093] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:14:17,543 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:14:17,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-12-06 17:14:17,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121358964] [2021-12-06 17:14:17,543 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:17,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:14:17,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:17,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:14:17,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:14:17,544 INFO L87 Difference]: Start difference. First operand 170 states and 228 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:14:17,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:17,600 INFO L93 Difference]: Finished difference Result 257 states and 355 transitions. [2021-12-06 17:14:17,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:14:17,601 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 32 [2021-12-06 17:14:17,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:17,604 INFO L225 Difference]: With dead ends: 257 [2021-12-06 17:14:17,604 INFO L226 Difference]: Without dead ends: 255 [2021-12-06 17:14:17,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:14:17,605 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 43 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:17,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 179 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:17,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-06 17:14:17,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2021-12-06 17:14:17,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 150 states have (on average 1.3) internal successors, (195), 159 states have internal predecessors, (195), 31 states have call successors, (31), 9 states have call predecessors, (31), 10 states have return successors, (50), 36 states have call predecessors, (50), 31 states have call successors, (50) [2021-12-06 17:14:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2021-12-06 17:14:17,624 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 32 [2021-12-06 17:14:17,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:17,624 INFO L470 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2021-12-06 17:14:17,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 3 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:14:17,625 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2021-12-06 17:14:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-06 17:14:17,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:17,626 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2021-12-06 17:14:17,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 17:14:17,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 17:14:17,828 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:17,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1848456444, now seen corresponding path program 1 times [2021-12-06 17:14:17,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:17,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593874231] [2021-12-06 17:14:17,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:17,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:17,837 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:17,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [607726144] [2021-12-06 17:14:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:17,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:17,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:17,838 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:17,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:14:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:17,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:14:17,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:17,906 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:14:17,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:17,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:17,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593874231] [2021-12-06 17:14:17,906 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:17,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607726144] [2021-12-06 17:14:17,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607726144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:17,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:17,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:14:17,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900915727] [2021-12-06 17:14:17,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:17,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:14:17,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:17,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:14:17,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:14:17,908 INFO L87 Difference]: Start difference. First operand 205 states and 276 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:14:17,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:17,932 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2021-12-06 17:14:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:14:17,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2021-12-06 17:14:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:17,935 INFO L225 Difference]: With dead ends: 217 [2021-12-06 17:14:17,935 INFO L226 Difference]: Without dead ends: 216 [2021-12-06 17:14:17,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:17,936 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:17,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 176 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:17,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-06 17:14:17,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2021-12-06 17:14:17,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 157 states have (on average 1.286624203821656) internal successors, (202), 164 states have internal predecessors, (202), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2021-12-06 17:14:17,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2021-12-06 17:14:17,952 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 38 [2021-12-06 17:14:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:17,952 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2021-12-06 17:14:17,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:14:17,953 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2021-12-06 17:14:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-12-06 17:14:17,954 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:17,954 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1] [2021-12-06 17:14:17,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:14:18,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:18,155 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:18,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:18,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1467574807, now seen corresponding path program 1 times [2021-12-06 17:14:18,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:18,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421097308] [2021-12-06 17:14:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:18,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:18,162 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:18,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7884030] [2021-12-06 17:14:18,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:18,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:18,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:18,164 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:18,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:14:18,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:18,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:14:18,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:14:18,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:18,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:18,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421097308] [2021-12-06 17:14:18,242 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:18,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7884030] [2021-12-06 17:14:18,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7884030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:18,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:18,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:14:18,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753687917] [2021-12-06 17:14:18,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:18,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:14:18,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:14:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:14:18,244 INFO L87 Difference]: Start difference. First operand 213 states and 285 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:14:18,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:18,263 INFO L93 Difference]: Finished difference Result 213 states and 285 transitions. [2021-12-06 17:14:18,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:14:18,269 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 39 [2021-12-06 17:14:18,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:18,272 INFO L225 Difference]: With dead ends: 213 [2021-12-06 17:14:18,272 INFO L226 Difference]: Without dead ends: 212 [2021-12-06 17:14:18,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:18,273 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 12 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:18,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 152 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:18,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-06 17:14:18,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-12-06 17:14:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 157 states have (on average 1.2738853503184713) internal successors, (200), 163 states have internal predecessors, (200), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2021-12-06 17:14:18,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 283 transitions. [2021-12-06 17:14:18,287 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 283 transitions. Word has length 39 [2021-12-06 17:14:18,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:18,287 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 283 transitions. [2021-12-06 17:14:18,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:14:18,287 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 283 transitions. [2021-12-06 17:14:18,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 17:14:18,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:18,288 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:18,308 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:14:18,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 17:14:18,489 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2048877323, now seen corresponding path program 1 times [2021-12-06 17:14:18,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:18,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143824676] [2021-12-06 17:14:18,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:18,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:18,495 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:18,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1420369111] [2021-12-06 17:14:18,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:18,495 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:18,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:18,496 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:18,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:14:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:18,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:14:18,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:14:18,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:18,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:18,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143824676] [2021-12-06 17:14:18,566 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:18,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420369111] [2021-12-06 17:14:18,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420369111] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:18,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:18,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:14:18,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813266670] [2021-12-06 17:14:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:18,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:14:18,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:18,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:14:18,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:14:18,567 INFO L87 Difference]: Start difference. First operand 212 states and 283 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:14:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:18,589 INFO L93 Difference]: Finished difference Result 218 states and 288 transitions. [2021-12-06 17:14:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:14:18,589 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2021-12-06 17:14:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:18,591 INFO L225 Difference]: With dead ends: 218 [2021-12-06 17:14:18,592 INFO L226 Difference]: Without dead ends: 217 [2021-12-06 17:14:18,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:18,593 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:18,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 167 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:18,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-06 17:14:18,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2021-12-06 17:14:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 159 states have (on average 1.270440251572327) internal successors, (202), 165 states have internal predecessors, (202), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2021-12-06 17:14:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 285 transitions. [2021-12-06 17:14:18,606 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 285 transitions. Word has length 42 [2021-12-06 17:14:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:18,607 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 285 transitions. [2021-12-06 17:14:18,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:14:18,607 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 285 transitions. [2021-12-06 17:14:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 17:14:18,608 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:18,608 INFO L514 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:18,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 17:14:18,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:18,809 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:18,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:18,810 INFO L85 PathProgramCache]: Analyzing trace with hash 909312544, now seen corresponding path program 1 times [2021-12-06 17:14:18,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:18,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634255333] [2021-12-06 17:14:18,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:18,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:18,838 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:18,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698286615] [2021-12-06 17:14:18,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:18,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:18,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:18,842 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:18,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:14:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:18,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:14:18,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 17:14:18,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:18,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:18,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634255333] [2021-12-06 17:14:18,923 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:18,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698286615] [2021-12-06 17:14:18,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698286615] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:18,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:18,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:14:18,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353322272] [2021-12-06 17:14:18,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:18,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:14:18,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:18,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:14:18,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:14:18,925 INFO L87 Difference]: Start difference. First operand 214 states and 285 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:14:18,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:18,939 INFO L93 Difference]: Finished difference Result 214 states and 285 transitions. [2021-12-06 17:14:18,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:14:18,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2021-12-06 17:14:18,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:18,941 INFO L225 Difference]: With dead ends: 214 [2021-12-06 17:14:18,941 INFO L226 Difference]: Without dead ends: 213 [2021-12-06 17:14:18,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:18,942 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 7 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:18,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 149 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-06 17:14:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2021-12-06 17:14:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 159 states have (on average 1.2641509433962264) internal successors, (201), 164 states have internal predecessors, (201), 32 states have call successors, (32), 9 states have call predecessors, (32), 10 states have return successors, (51), 39 states have call predecessors, (51), 32 states have call successors, (51) [2021-12-06 17:14:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 284 transitions. [2021-12-06 17:14:18,950 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 284 transitions. Word has length 43 [2021-12-06 17:14:18,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:18,950 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 284 transitions. [2021-12-06 17:14:18,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:14:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 284 transitions. [2021-12-06 17:14:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 17:14:18,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:18,951 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1] [2021-12-06 17:14:18,983 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 17:14:19,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 17:14:19,152 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:19,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:19,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1923383932, now seen corresponding path program 1 times [2021-12-06 17:14:19,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:19,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171652267] [2021-12-06 17:14:19,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:19,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:19,159 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:19,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703176737] [2021-12-06 17:14:19,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:19,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:19,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:19,160 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:19,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:14:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:19,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:14:19,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:14:19,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:14:19,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:19,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171652267] [2021-12-06 17:14:19,339 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:19,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703176737] [2021-12-06 17:14:19,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703176737] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:19,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:19,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-06 17:14:19,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015088417] [2021-12-06 17:14:19,340 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:19,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:14:19,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:19,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:14:19,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:14:19,341 INFO L87 Difference]: Start difference. First operand 213 states and 284 transitions. Second operand has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 17:14:19,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:19,570 INFO L93 Difference]: Finished difference Result 316 states and 409 transitions. [2021-12-06 17:14:19,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 17:14:19,571 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 47 [2021-12-06 17:14:19,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:19,572 INFO L225 Difference]: With dead ends: 316 [2021-12-06 17:14:19,572 INFO L226 Difference]: Without dead ends: 315 [2021-12-06 17:14:19,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:14:19,574 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 182 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:19,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 633 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:14:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-06 17:14:19,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 278. [2021-12-06 17:14:19,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 209 states have (on average 1.30622009569378) internal successors, (273), 216 states have internal predecessors, (273), 42 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (69), 49 states have call predecessors, (69), 42 states have call successors, (69) [2021-12-06 17:14:19,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 384 transitions. [2021-12-06 17:14:19,586 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 384 transitions. Word has length 47 [2021-12-06 17:14:19,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:19,586 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 384 transitions. [2021-12-06 17:14:19,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.3846153846153846) internal successors, (44), 12 states have internal predecessors, (44), 7 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 17:14:19,586 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 384 transitions. [2021-12-06 17:14:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 17:14:19,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:19,587 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1] [2021-12-06 17:14:19,618 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 17:14:19,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 17:14:19,787 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:19,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:19,788 INFO L85 PathProgramCache]: Analyzing trace with hash -504640214, now seen corresponding path program 1 times [2021-12-06 17:14:19,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:19,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934589622] [2021-12-06 17:14:19,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:19,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:19,794 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:19,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675538197] [2021-12-06 17:14:19,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:19,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:19,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:19,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:19,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:14:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:19,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:14:19,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:19,880 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 17:14:19,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:19,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:19,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934589622] [2021-12-06 17:14:19,880 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:19,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675538197] [2021-12-06 17:14:19,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675538197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:19,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:19,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:14:19,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339826101] [2021-12-06 17:14:19,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:19,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:14:19,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:19,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:14:19,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:14:19,882 INFO L87 Difference]: Start difference. First operand 278 states and 384 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 17:14:19,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:19,896 INFO L93 Difference]: Finished difference Result 278 states and 384 transitions. [2021-12-06 17:14:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:14:19,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 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 48 [2021-12-06 17:14:19,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:19,899 INFO L225 Difference]: With dead ends: 278 [2021-12-06 17:14:19,899 INFO L226 Difference]: Without dead ends: 277 [2021-12-06 17:14:19,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:14:19,900 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 8 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 109 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 [2021-12-06 17:14:19,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 109 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:19,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-12-06 17:14:19,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2021-12-06 17:14:19,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 209 states have (on average 1.291866028708134) internal successors, (270), 215 states have internal predecessors, (270), 42 states have call successors, (42), 12 states have call predecessors, (42), 15 states have return successors, (69), 49 states have call predecessors, (69), 42 states have call successors, (69) [2021-12-06 17:14:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 381 transitions. [2021-12-06 17:14:19,915 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 381 transitions. Word has length 48 [2021-12-06 17:14:19,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:19,916 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 381 transitions. [2021-12-06 17:14:19,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 17:14:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 381 transitions. [2021-12-06 17:14:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 17:14:19,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:19,917 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1] [2021-12-06 17:14:19,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 17:14:20,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 17:14:20,119 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:20,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:20,120 INFO L85 PathProgramCache]: Analyzing trace with hash -169316457, now seen corresponding path program 1 times [2021-12-06 17:14:20,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:20,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958288155] [2021-12-06 17:14:20,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:20,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:20,143 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:20,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309334293] [2021-12-06 17:14:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:20,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:20,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:20,146 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:20,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 17:14:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:20,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:14:20,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:20,289 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:14:20,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:20,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:20,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958288155] [2021-12-06 17:14:20,290 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:20,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309334293] [2021-12-06 17:14:20,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309334293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:20,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:20,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:14:20,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645473072] [2021-12-06 17:14:20,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:20,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:14:20,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:20,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:14:20,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:14:20,291 INFO L87 Difference]: Start difference. First operand 277 states and 381 transitions. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 17:14:20,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:20,328 INFO L93 Difference]: Finished difference Result 496 states and 685 transitions. [2021-12-06 17:14:20,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:14:20,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2021-12-06 17:14:20,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:20,330 INFO L225 Difference]: With dead ends: 496 [2021-12-06 17:14:20,330 INFO L226 Difference]: Without dead ends: 253 [2021-12-06 17:14:20,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:14:20,331 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 23 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:20,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 109 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:20,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-12-06 17:14:20,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2021-12-06 17:14:20,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 189 states have (on average 1.2804232804232805) internal successors, (242), 196 states have internal predecessors, (242), 37 states have call successors, (37), 11 states have call predecessors, (37), 14 states have return successors, (61), 43 states have call predecessors, (61), 37 states have call successors, (61) [2021-12-06 17:14:20,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 340 transitions. [2021-12-06 17:14:20,340 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 340 transitions. Word has length 53 [2021-12-06 17:14:20,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:20,340 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 340 transitions. [2021-12-06 17:14:20,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 17:14:20,341 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 340 transitions. [2021-12-06 17:14:20,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 17:14:20,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:20,341 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:20,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 17:14:20,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 17:14:20,543 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:20,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:20,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1084763047, now seen corresponding path program 2 times [2021-12-06 17:14:20,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:20,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756763606] [2021-12-06 17:14:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:20,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:20,562 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:20,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666528513] [2021-12-06 17:14:20,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:14:20,563 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:20,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:20,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:20,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 17:14:20,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:14:20,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:20,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:14:20,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:20,715 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 17:14:20,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:20,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:20,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756763606] [2021-12-06 17:14:20,716 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:20,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666528513] [2021-12-06 17:14:20,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666528513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:20,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:20,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:14:20,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801836009] [2021-12-06 17:14:20,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:20,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:14:20,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:20,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:14:20,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:14:20,717 INFO L87 Difference]: Start difference. First operand 251 states and 340 transitions. Second operand has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 17:14:20,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:20,794 INFO L93 Difference]: Finished difference Result 516 states and 716 transitions. [2021-12-06 17:14:20,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:14:20,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2021-12-06 17:14:20,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:20,800 INFO L225 Difference]: With dead ends: 516 [2021-12-06 17:14:20,800 INFO L226 Difference]: Without dead ends: 303 [2021-12-06 17:14:20,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:14:20,801 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:20,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 365 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:20,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-06 17:14:20,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 295. [2021-12-06 17:14:20,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 223 states have (on average 1.3094170403587444) internal successors, (292), 228 states have internal predecessors, (292), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2021-12-06 17:14:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 412 transitions. [2021-12-06 17:14:20,814 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 412 transitions. Word has length 53 [2021-12-06 17:14:20,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:20,814 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 412 transitions. [2021-12-06 17:14:20,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 5 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 17:14:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 412 transitions. [2021-12-06 17:14:20,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-06 17:14:20,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:20,815 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:20,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-06 17:14:21,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 17:14:21,017 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:21,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:21,019 INFO L85 PathProgramCache]: Analyzing trace with hash 275903367, now seen corresponding path program 1 times [2021-12-06 17:14:21,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:21,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863736929] [2021-12-06 17:14:21,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:21,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:21,038 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:21,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840191333] [2021-12-06 17:14:21,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:21,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:21,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:21,042 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:21,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 17:14:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:21,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:14:21,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:14:21,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:14:21,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:21,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863736929] [2021-12-06 17:14:21,301 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:21,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840191333] [2021-12-06 17:14:21,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840191333] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:21,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:21,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-06 17:14:21,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401228662] [2021-12-06 17:14:21,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:21,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:14:21,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:21,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:14:21,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:14:21,302 INFO L87 Difference]: Start difference. First operand 295 states and 412 transitions. Second operand has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 17:14:21,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:21,425 INFO L93 Difference]: Finished difference Result 533 states and 738 transitions. [2021-12-06 17:14:21,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:14:21,426 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2021-12-06 17:14:21,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:21,427 INFO L225 Difference]: With dead ends: 533 [2021-12-06 17:14:21,427 INFO L226 Difference]: Without dead ends: 323 [2021-12-06 17:14:21,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-12-06 17:14:21,429 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 50 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:21,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 487 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-12-06 17:14:21,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 305. [2021-12-06 17:14:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 233 states have (on average 1.3047210300429184) internal successors, (304), 238 states have internal predecessors, (304), 45 states have call successors, (45), 13 states have call predecessors, (45), 16 states have return successors, (75), 53 states have call predecessors, (75), 45 states have call successors, (75) [2021-12-06 17:14:21,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 424 transitions. [2021-12-06 17:14:21,440 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 424 transitions. Word has length 52 [2021-12-06 17:14:21,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:21,440 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 424 transitions. [2021-12-06 17:14:21,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2) internal successors, (48), 15 states have internal predecessors, (48), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2021-12-06 17:14:21,441 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 424 transitions. [2021-12-06 17:14:21,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-06 17:14:21,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:21,441 INFO L514 BasicCegarLoop]: trace histogram [5, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:21,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 17:14:21,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:21,642 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:21,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash 726408517, now seen corresponding path program 1 times [2021-12-06 17:14:21,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:21,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639578667] [2021-12-06 17:14:21,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:21,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:21,646 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:21,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1994796215] [2021-12-06 17:14:21,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:21,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:21,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:21,647 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:21,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 17:14:21,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:21,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 17:14:21,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:14:21,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 17:14:21,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:21,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639578667] [2021-12-06 17:14:21,879 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:21,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994796215] [2021-12-06 17:14:21,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994796215] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:21,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:21,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-12-06 17:14:21,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115438394] [2021-12-06 17:14:21,880 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:21,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 17:14:21,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:21,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 17:14:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:14:21,881 INFO L87 Difference]: Start difference. First operand 305 states and 424 transitions. Second operand has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-06 17:14:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:22,136 INFO L93 Difference]: Finished difference Result 606 states and 829 transitions. [2021-12-06 17:14:22,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 17:14:22,136 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 55 [2021-12-06 17:14:22,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:22,139 INFO L225 Difference]: With dead ends: 606 [2021-12-06 17:14:22,139 INFO L226 Difference]: Without dead ends: 392 [2021-12-06 17:14:22,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 17:14:22,140 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 190 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:22,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 868 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 500 Invalid, 0 Unknown, 54 Unchecked, 0.2s Time] [2021-12-06 17:14:22,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-06 17:14:22,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 364. [2021-12-06 17:14:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 282 states have (on average 1.2943262411347518) internal successors, (365), 281 states have internal predecessors, (365), 52 states have call successors, (52), 16 states have call predecessors, (52), 19 states have return successors, (85), 66 states have call predecessors, (85), 52 states have call successors, (85) [2021-12-06 17:14:22,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 502 transitions. [2021-12-06 17:14:22,153 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 502 transitions. Word has length 55 [2021-12-06 17:14:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:22,153 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 502 transitions. [2021-12-06 17:14:22,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.176470588235294) internal successors, (54), 16 states have internal predecessors, (54), 9 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2021-12-06 17:14:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 502 transitions. [2021-12-06 17:14:22,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 17:14:22,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:22,154 INFO L514 BasicCegarLoop]: trace histogram [6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:22,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 17:14:22,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:22,355 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:22,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:22,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1989972148, now seen corresponding path program 1 times [2021-12-06 17:14:22,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:22,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481024851] [2021-12-06 17:14:22,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:22,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:22,360 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:22,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945422805] [2021-12-06 17:14:22,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:22,360 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:22,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:22,361 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:22,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 17:14:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:22,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:14:22,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:14:22,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 17:14:22,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:22,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481024851] [2021-12-06 17:14:22,541 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:22,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945422805] [2021-12-06 17:14:22,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945422805] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:22,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:22,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-12-06 17:14:22,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654795245] [2021-12-06 17:14:22,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:22,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:14:22,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:14:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:14:22,543 INFO L87 Difference]: Start difference. First operand 364 states and 502 transitions. Second operand has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:14:22,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:22,670 INFO L93 Difference]: Finished difference Result 706 states and 977 transitions. [2021-12-06 17:14:22,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:14:22,670 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 61 [2021-12-06 17:14:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:22,672 INFO L225 Difference]: With dead ends: 706 [2021-12-06 17:14:22,672 INFO L226 Difference]: Without dead ends: 382 [2021-12-06 17:14:22,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:14:22,674 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 71 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:22,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 499 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-12-06 17:14:22,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 363. [2021-12-06 17:14:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 280 states have (on average 1.2892857142857144) internal successors, (361), 281 states have internal predecessors, (361), 52 states have call successors, (52), 17 states have call predecessors, (52), 20 states have return successors, (83), 64 states have call predecessors, (83), 52 states have call successors, (83) [2021-12-06 17:14:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 496 transitions. [2021-12-06 17:14:22,686 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 496 transitions. Word has length 61 [2021-12-06 17:14:22,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:22,686 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 496 transitions. [2021-12-06 17:14:22,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.2) internal successors, (42), 8 states have internal predecessors, (42), 6 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:14:22,687 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 496 transitions. [2021-12-06 17:14:22,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 17:14:22,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:22,687 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:22,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 17:14:22,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 17:14:22,888 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:22,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:22,888 INFO L85 PathProgramCache]: Analyzing trace with hash -681681031, now seen corresponding path program 1 times [2021-12-06 17:14:22,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:22,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142366640] [2021-12-06 17:14:22,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:22,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:22,893 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:22,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573815766] [2021-12-06 17:14:22,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:22,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:22,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:22,894 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:22,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 17:14:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:22,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:14:22,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:22,986 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 17:14:22,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:22,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:22,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142366640] [2021-12-06 17:14:22,986 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:22,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573815766] [2021-12-06 17:14:22,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573815766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:22,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:22,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:14:22,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394379856] [2021-12-06 17:14:22,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:22,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 17:14:22,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:22,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 17:14:22,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:14:22,988 INFO L87 Difference]: Start difference. First operand 363 states and 496 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:14:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:23,043 INFO L93 Difference]: Finished difference Result 683 states and 928 transitions. [2021-12-06 17:14:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:14:23,043 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2021-12-06 17:14:23,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:23,045 INFO L225 Difference]: With dead ends: 683 [2021-12-06 17:14:23,045 INFO L226 Difference]: Without dead ends: 369 [2021-12-06 17:14:23,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:14:23,047 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 41 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:23,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 366 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:23,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-12-06 17:14:23,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 359. [2021-12-06 17:14:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 277 states have (on average 1.2779783393501805) internal successors, (354), 278 states have internal predecessors, (354), 50 states have call successors, (50), 18 states have call predecessors, (50), 21 states have return successors, (77), 62 states have call predecessors, (77), 50 states have call successors, (77) [2021-12-06 17:14:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 481 transitions. [2021-12-06 17:14:23,059 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 481 transitions. Word has length 63 [2021-12-06 17:14:23,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:23,059 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 481 transitions. [2021-12-06 17:14:23,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-06 17:14:23,059 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 481 transitions. [2021-12-06 17:14:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 17:14:23,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:23,060 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:23,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 17:14:23,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 17:14:23,260 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:23,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:23,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1354749825, now seen corresponding path program 1 times [2021-12-06 17:14:23,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:23,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423876430] [2021-12-06 17:14:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:23,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:23,265 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:23,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130052424] [2021-12-06 17:14:23,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:23,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:23,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:23,266 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:23,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 17:14:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:23,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:14:23,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 17:14:23,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:23,491 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 17:14:23,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:23,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423876430] [2021-12-06 17:14:23,491 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:23,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130052424] [2021-12-06 17:14:23,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130052424] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:23,491 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:23,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 17:14:23,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831808064] [2021-12-06 17:14:23,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:23,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:14:23,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:23,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:14:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:14:23,492 INFO L87 Difference]: Start difference. First operand 359 states and 481 transitions. Second operand has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 17:14:23,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:23,648 INFO L93 Difference]: Finished difference Result 442 states and 589 transitions. [2021-12-06 17:14:23,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:14:23,649 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 66 [2021-12-06 17:14:23,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:23,651 INFO L225 Difference]: With dead ends: 442 [2021-12-06 17:14:23,651 INFO L226 Difference]: Without dead ends: 441 [2021-12-06 17:14:23,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:14:23,652 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 124 mSDsluCounter, 557 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:23,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 625 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:23,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-12-06 17:14:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 418. [2021-12-06 17:14:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.279503105590062) internal successors, (412), 322 states have internal predecessors, (412), 62 states have call successors, (62), 20 states have call predecessors, (62), 23 states have return successors, (98), 75 states have call predecessors, (98), 62 states have call successors, (98) [2021-12-06 17:14:23,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 572 transitions. [2021-12-06 17:14:23,667 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 572 transitions. Word has length 66 [2021-12-06 17:14:23,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:23,668 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 572 transitions. [2021-12-06 17:14:23,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.923076923076923) internal successors, (51), 12 states have internal predecessors, (51), 7 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 17:14:23,668 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 572 transitions. [2021-12-06 17:14:23,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 17:14:23,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:23,669 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:23,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 17:14:23,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 17:14:23,870 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:23,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:23,871 INFO L85 PathProgramCache]: Analyzing trace with hash 952428439, now seen corresponding path program 1 times [2021-12-06 17:14:23,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:23,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91084089] [2021-12-06 17:14:23,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:23,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:23,889 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:23,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334893422] [2021-12-06 17:14:23,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:23,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:23,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:23,893 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:23,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 17:14:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:23,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:14:23,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 17:14:24,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:24,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:24,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91084089] [2021-12-06 17:14:24,030 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:24,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334893422] [2021-12-06 17:14:24,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334893422] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:24,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:24,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:14:24,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619150625] [2021-12-06 17:14:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:24,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:14:24,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:24,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:14:24,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:14:24,031 INFO L87 Difference]: Start difference. First operand 418 states and 572 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:14:24,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:24,098 INFO L93 Difference]: Finished difference Result 425 states and 573 transitions. [2021-12-06 17:14:24,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:14:24,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2021-12-06 17:14:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:24,100 INFO L225 Difference]: With dead ends: 425 [2021-12-06 17:14:24,100 INFO L226 Difference]: Without dead ends: 424 [2021-12-06 17:14:24,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:14:24,101 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 46 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:24,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 357 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:24,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-12-06 17:14:24,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 418. [2021-12-06 17:14:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 322 states have (on average 1.2732919254658386) internal successors, (410), 322 states have internal predecessors, (410), 62 states have call successors, (62), 20 states have call predecessors, (62), 23 states have return successors, (98), 75 states have call predecessors, (98), 62 states have call successors, (98) [2021-12-06 17:14:24,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 570 transitions. [2021-12-06 17:14:24,115 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 570 transitions. Word has length 67 [2021-12-06 17:14:24,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:24,116 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 570 transitions. [2021-12-06 17:14:24,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:14:24,116 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 570 transitions. [2021-12-06 17:14:24,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 17:14:24,116 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:24,116 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:24,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 17:14:24,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 17:14:24,317 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:24,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:24,317 INFO L85 PathProgramCache]: Analyzing trace with hash -159097642, now seen corresponding path program 2 times [2021-12-06 17:14:24,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:24,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140439005] [2021-12-06 17:14:24,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:24,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:24,322 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:24,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [648687182] [2021-12-06 17:14:24,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:14:24,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:24,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:24,323 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:24,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 17:14:24,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:14:24,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:24,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:14:24,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-06 17:14:24,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-06 17:14:24,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:24,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140439005] [2021-12-06 17:14:24,578 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:24,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648687182] [2021-12-06 17:14:24,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648687182] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:24,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:24,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-06 17:14:24,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715145302] [2021-12-06 17:14:24,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:24,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:14:24,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:24,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:14:24,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:14:24,580 INFO L87 Difference]: Start difference. First operand 418 states and 570 transitions. Second operand has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 17:14:24,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:24,750 INFO L93 Difference]: Finished difference Result 478 states and 628 transitions. [2021-12-06 17:14:24,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:14:24,750 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 71 [2021-12-06 17:14:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:24,753 INFO L225 Difference]: With dead ends: 478 [2021-12-06 17:14:24,753 INFO L226 Difference]: Without dead ends: 477 [2021-12-06 17:14:24,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:14:24,754 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 144 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:24,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 553 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:24,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-12-06 17:14:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 466. [2021-12-06 17:14:24,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 466 states, 359 states have (on average 1.2701949860724233) internal successors, (456), 361 states have internal predecessors, (456), 66 states have call successors, (66), 24 states have call predecessors, (66), 30 states have return successors, (103), 80 states have call predecessors, (103), 66 states have call successors, (103) [2021-12-06 17:14:24,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 625 transitions. [2021-12-06 17:14:24,771 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 625 transitions. Word has length 71 [2021-12-06 17:14:24,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:24,771 INFO L470 AbstractCegarLoop]: Abstraction has 466 states and 625 transitions. [2021-12-06 17:14:24,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 12 states have internal predecessors, (61), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 17:14:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 625 transitions. [2021-12-06 17:14:24,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 17:14:24,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:24,772 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:24,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 17:14:24,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:24,974 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:24,975 INFO L85 PathProgramCache]: Analyzing trace with hash -927342394, now seen corresponding path program 1 times [2021-12-06 17:14:24,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:24,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817413050] [2021-12-06 17:14:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:24,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:24,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:24,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1324438719] [2021-12-06 17:14:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:24,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:24,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:24,996 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:24,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 17:14:25,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:25,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 17:14:25,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-06 17:14:25,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:25,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:25,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817413050] [2021-12-06 17:14:25,242 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:25,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324438719] [2021-12-06 17:14:25,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324438719] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:25,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:25,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:14:25,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081150367] [2021-12-06 17:14:25,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:25,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:14:25,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:25,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:14:25,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:14:25,243 INFO L87 Difference]: Start difference. First operand 466 states and 625 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:14:25,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:25,366 INFO L93 Difference]: Finished difference Result 875 states and 1185 transitions. [2021-12-06 17:14:25,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:14:25,367 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2021-12-06 17:14:25,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:25,369 INFO L225 Difference]: With dead ends: 875 [2021-12-06 17:14:25,369 INFO L226 Difference]: Without dead ends: 466 [2021-12-06 17:14:25,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:14:25,371 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 60 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:25,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 296 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2021-12-06 17:14:25,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2021-12-06 17:14:25,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 352 states have (on average 1.2727272727272727) internal successors, (448), 355 states have internal predecessors, (448), 66 states have call successors, (66), 24 states have call predecessors, (66), 29 states have return successors, (101), 78 states have call predecessors, (101), 66 states have call successors, (101) [2021-12-06 17:14:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 615 transitions. [2021-12-06 17:14:25,385 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 615 transitions. Word has length 76 [2021-12-06 17:14:25,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:25,385 INFO L470 AbstractCegarLoop]: Abstraction has 458 states and 615 transitions. [2021-12-06 17:14:25,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.5) internal successors, (45), 9 states have internal predecessors, (45), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:14:25,385 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 615 transitions. [2021-12-06 17:14:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 17:14:25,386 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:25,386 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2021-12-06 17:14:25,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 17:14:25,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 17:14:25,587 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:25,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:25,588 INFO L85 PathProgramCache]: Analyzing trace with hash -960430689, now seen corresponding path program 1 times [2021-12-06 17:14:25,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:25,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8616999] [2021-12-06 17:14:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:25,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:25,600 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:25,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1444528629] [2021-12-06 17:14:25,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:25,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:25,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:25,603 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:25,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 17:14:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:25,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:14:25,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 17:14:25,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 17:14:25,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:25,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8616999] [2021-12-06 17:14:25,931 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:25,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444528629] [2021-12-06 17:14:25,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444528629] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:25,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:25,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-06 17:14:25,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234035159] [2021-12-06 17:14:25,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:25,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 17:14:25,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:25,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 17:14:25,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:14:25,932 INFO L87 Difference]: Start difference. First operand 458 states and 615 transitions. Second operand has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-06 17:14:26,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:26,257 INFO L93 Difference]: Finished difference Result 538 states and 695 transitions. [2021-12-06 17:14:26,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 17:14:26,257 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 79 [2021-12-06 17:14:26,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:26,260 INFO L225 Difference]: With dead ends: 538 [2021-12-06 17:14:26,260 INFO L226 Difference]: Without dead ends: 537 [2021-12-06 17:14:26,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 17:14:26,261 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 180 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:26,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 709 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 527 Invalid, 0 Unknown, 61 Unchecked, 0.2s Time] [2021-12-06 17:14:26,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-12-06 17:14:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 506. [2021-12-06 17:14:26,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 391 states have (on average 1.2659846547314577) internal successors, (495), 391 states have internal predecessors, (495), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 86 states have call predecessors, (109), 69 states have call successors, (109) [2021-12-06 17:14:26,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 673 transitions. [2021-12-06 17:14:26,277 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 673 transitions. Word has length 79 [2021-12-06 17:14:26,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:26,277 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 673 transitions. [2021-12-06 17:14:26,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.2857142857142856) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-06 17:14:26,277 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 673 transitions. [2021-12-06 17:14:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-06 17:14:26,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:26,278 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 6, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2021-12-06 17:14:26,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 17:14:26,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 17:14:26,479 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:26,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:26,480 INFO L85 PathProgramCache]: Analyzing trace with hash 291419757, now seen corresponding path program 1 times [2021-12-06 17:14:26,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:26,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198663093] [2021-12-06 17:14:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:26,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:26,498 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:26,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836042177] [2021-12-06 17:14:26,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:26,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:26,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:26,502 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:26,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 17:14:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:26,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:14:26,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:26,627 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-06 17:14:26,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:26,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:26,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198663093] [2021-12-06 17:14:26,628 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:26,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836042177] [2021-12-06 17:14:26,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836042177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:26,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:26,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 17:14:26,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295749302] [2021-12-06 17:14:26,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:26,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:14:26,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:26,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:14:26,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:14:26,629 INFO L87 Difference]: Start difference. First operand 506 states and 673 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 17:14:26,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:26,648 INFO L93 Difference]: Finished difference Result 508 states and 676 transitions. [2021-12-06 17:14:26,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:14:26,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 80 [2021-12-06 17:14:26,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:26,651 INFO L225 Difference]: With dead ends: 508 [2021-12-06 17:14:26,651 INFO L226 Difference]: Without dead ends: 507 [2021-12-06 17:14:26,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:14:26,652 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:26,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 214 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-12-06 17:14:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 505. [2021-12-06 17:14:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 391 states have (on average 1.2404092071611252) internal successors, (485), 390 states have internal predecessors, (485), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 86 states have call predecessors, (109), 69 states have call successors, (109) [2021-12-06 17:14:26,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 663 transitions. [2021-12-06 17:14:26,666 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 663 transitions. Word has length 80 [2021-12-06 17:14:26,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:26,667 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 663 transitions. [2021-12-06 17:14:26,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 17:14:26,667 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 663 transitions. [2021-12-06 17:14:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 17:14:26,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:26,668 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2021-12-06 17:14:26,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 17:14:26,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:26,868 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:26,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:26,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1026169764, now seen corresponding path program 1 times [2021-12-06 17:14:26,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:26,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32163119] [2021-12-06 17:14:26,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:26,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:26,873 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:26,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837047852] [2021-12-06 17:14:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:26,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:26,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:26,874 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:26,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 17:14:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:26,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:14:26,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-06 17:14:26,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:26,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:26,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32163119] [2021-12-06 17:14:26,993 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:26,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837047852] [2021-12-06 17:14:26,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837047852] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:14:26,993 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:14:26,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-12-06 17:14:26,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983841497] [2021-12-06 17:14:26,993 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:26,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:14:26,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:26,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:14:26,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:14:26,994 INFO L87 Difference]: Start difference. First operand 505 states and 663 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:14:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:27,023 INFO L93 Difference]: Finished difference Result 543 states and 720 transitions. [2021-12-06 17:14:27,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:14:27,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2021-12-06 17:14:27,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:27,026 INFO L225 Difference]: With dead ends: 543 [2021-12-06 17:14:27,026 INFO L226 Difference]: Without dead ends: 542 [2021-12-06 17:14:27,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 17:14:27,026 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 10 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:27,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 197 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:27,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-12-06 17:14:27,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 517. [2021-12-06 17:14:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 403 states have (on average 1.2258064516129032) internal successors, (494), 396 states have internal predecessors, (494), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 92 states have call predecessors, (109), 69 states have call successors, (109) [2021-12-06 17:14:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 672 transitions. [2021-12-06 17:14:27,048 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 672 transitions. Word has length 84 [2021-12-06 17:14:27,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:27,048 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 672 transitions. [2021-12-06 17:14:27,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:14:27,048 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 672 transitions. [2021-12-06 17:14:27,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-06 17:14:27,049 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:27,050 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 17:14:27,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-06 17:14:27,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 17:14:27,250 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:27,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:27,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1746491672, now seen corresponding path program 1 times [2021-12-06 17:14:27,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:27,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64756656] [2021-12-06 17:14:27,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:27,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:27,255 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:27,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951717350] [2021-12-06 17:14:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:27,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:27,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:27,256 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:27,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 17:14:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:27,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:14:27,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-06 17:14:27,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:27,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:27,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64756656] [2021-12-06 17:14:27,402 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:27,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951717350] [2021-12-06 17:14:27,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951717350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:27,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:27,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 17:14:27,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634713826] [2021-12-06 17:14:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:27,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:14:27,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:14:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:14:27,404 INFO L87 Difference]: Start difference. First operand 517 states and 672 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:14:27,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:27,440 INFO L93 Difference]: Finished difference Result 519 states and 675 transitions. [2021-12-06 17:14:27,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 17:14:27,440 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2021-12-06 17:14:27,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:27,443 INFO L225 Difference]: With dead ends: 519 [2021-12-06 17:14:27,443 INFO L226 Difference]: Without dead ends: 518 [2021-12-06 17:14:27,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:14:27,443 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 21 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:27,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 218 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:27,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-12-06 17:14:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 495. [2021-12-06 17:14:27,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 382 states have (on average 1.2146596858638743) internal successors, (464), 381 states have internal predecessors, (464), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (109), 85 states have call predecessors, (109), 69 states have call successors, (109) [2021-12-06 17:14:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 642 transitions. [2021-12-06 17:14:27,464 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 642 transitions. Word has length 85 [2021-12-06 17:14:27,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:27,464 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 642 transitions. [2021-12-06 17:14:27,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 3 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:14:27,465 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 642 transitions. [2021-12-06 17:14:27,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 17:14:27,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:27,466 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 17:14:27,485 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 17:14:27,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:27,666 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:27,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:27,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1693332954, now seen corresponding path program 2 times [2021-12-06 17:14:27,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:27,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002702790] [2021-12-06 17:14:27,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:27,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:27,671 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:27,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255886187] [2021-12-06 17:14:27,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:14:27,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:27,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:27,672 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:27,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 17:14:27,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:14:27,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:27,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:14:27,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:27,866 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-06 17:14:27,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:27,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:27,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002702790] [2021-12-06 17:14:27,866 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:27,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255886187] [2021-12-06 17:14:27,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255886187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:27,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:27,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 17:14:27,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063130191] [2021-12-06 17:14:27,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:27,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:14:27,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:27,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:14:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:14:27,868 INFO L87 Difference]: Start difference. First operand 495 states and 642 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-06 17:14:27,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:27,906 INFO L93 Difference]: Finished difference Result 497 states and 645 transitions. [2021-12-06 17:14:27,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:14:27,906 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 86 [2021-12-06 17:14:27,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:27,909 INFO L225 Difference]: With dead ends: 497 [2021-12-06 17:14:27,909 INFO L226 Difference]: Without dead ends: 495 [2021-12-06 17:14:27,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:14:27,910 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 26 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:27,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 206 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:27,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2021-12-06 17:14:27,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 432. [2021-12-06 17:14:27,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 334 states have (on average 1.1706586826347305) internal successors, (391), 333 states have internal predecessors, (391), 59 states have call successors, (59), 28 states have call predecessors, (59), 32 states have return successors, (74), 70 states have call predecessors, (74), 59 states have call successors, (74) [2021-12-06 17:14:27,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 524 transitions. [2021-12-06 17:14:27,923 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 524 transitions. Word has length 86 [2021-12-06 17:14:27,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:27,923 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 524 transitions. [2021-12-06 17:14:27,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 8 states have internal predecessors, (42), 4 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-06 17:14:27,923 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 524 transitions. [2021-12-06 17:14:27,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 17:14:27,924 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:27,924 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 6, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1] [2021-12-06 17:14:27,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 17:14:28,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:28,124 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:28,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:28,125 INFO L85 PathProgramCache]: Analyzing trace with hash 253172159, now seen corresponding path program 2 times [2021-12-06 17:14:28,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:28,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788059529] [2021-12-06 17:14:28,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:28,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:28,131 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:28,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1289826350] [2021-12-06 17:14:28,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:14:28,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:28,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:28,133 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:28,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 17:14:28,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:14:28,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:28,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:14:28,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 17:14:28,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:28,436 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 17:14:28,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:28,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788059529] [2021-12-06 17:14:28,436 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:28,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289826350] [2021-12-06 17:14:28,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289826350] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:28,436 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:28,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2021-12-06 17:14:28,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040247064] [2021-12-06 17:14:28,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:28,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 17:14:28,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:28,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 17:14:28,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:14:28,438 INFO L87 Difference]: Start difference. First operand 432 states and 524 transitions. Second operand has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-06 17:14:28,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:28,714 INFO L93 Difference]: Finished difference Result 831 states and 1028 transitions. [2021-12-06 17:14:28,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 17:14:28,714 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 89 [2021-12-06 17:14:28,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:28,716 INFO L225 Difference]: With dead ends: 831 [2021-12-06 17:14:28,717 INFO L226 Difference]: Without dead ends: 459 [2021-12-06 17:14:28,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2021-12-06 17:14:28,718 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 113 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:28,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 714 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:14:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-12-06 17:14:28,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2021-12-06 17:14:28,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 335 states have (on average 1.164179104477612) internal successors, (390), 335 states have internal predecessors, (390), 59 states have call successors, (59), 30 states have call predecessors, (59), 33 states have return successors, (72), 68 states have call predecessors, (72), 59 states have call successors, (72) [2021-12-06 17:14:28,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2021-12-06 17:14:28,732 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 89 [2021-12-06 17:14:28,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:28,732 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2021-12-06 17:14:28,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.7777777777777777) internal successors, (68), 15 states have internal predecessors, (68), 9 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-06 17:14:28,732 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2021-12-06 17:14:28,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-06 17:14:28,733 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:28,733 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 17:14:28,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 17:14:28,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:28,933 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:28,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash 929332397, now seen corresponding path program 1 times [2021-12-06 17:14:28,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:28,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684323680] [2021-12-06 17:14:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:28,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:28,939 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:28,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18021177] [2021-12-06 17:14:28,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:28,939 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:28,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:28,940 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:28,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 17:14:28,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:28,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:14:28,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:29,065 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-06 17:14:29,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-06 17:14:29,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:29,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684323680] [2021-12-06 17:14:29,177 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:29,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18021177] [2021-12-06 17:14:29,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18021177] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:29,177 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:29,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-06 17:14:29,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042932785] [2021-12-06 17:14:29,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:29,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:14:29,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:14:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:14:29,178 INFO L87 Difference]: Start difference. First operand 434 states and 521 transitions. Second operand has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:14:29,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:29,338 INFO L93 Difference]: Finished difference Result 585 states and 719 transitions. [2021-12-06 17:14:29,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 17:14:29,338 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 106 [2021-12-06 17:14:29,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:29,341 INFO L225 Difference]: With dead ends: 585 [2021-12-06 17:14:29,341 INFO L226 Difference]: Without dead ends: 582 [2021-12-06 17:14:29,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:14:29,342 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 138 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:29,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 509 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:29,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-12-06 17:14:29,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 554. [2021-12-06 17:14:29,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 430 states have (on average 1.1790697674418604) internal successors, (507), 430 states have internal predecessors, (507), 78 states have call successors, (78), 36 states have call predecessors, (78), 39 states have return successors, (91), 87 states have call predecessors, (91), 78 states have call successors, (91) [2021-12-06 17:14:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 676 transitions. [2021-12-06 17:14:29,358 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 676 transitions. Word has length 106 [2021-12-06 17:14:29,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:29,358 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 676 transitions. [2021-12-06 17:14:29,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:14:29,359 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 676 transitions. [2021-12-06 17:14:29,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 17:14:29,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:29,359 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 17:14:29,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 17:14:29,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:29,560 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:29,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:29,562 INFO L85 PathProgramCache]: Analyzing trace with hash 2016742028, now seen corresponding path program 2 times [2021-12-06 17:14:29,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:29,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92610095] [2021-12-06 17:14:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:29,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:29,581 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:29,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131206469] [2021-12-06 17:14:29,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:14:29,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:29,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:29,585 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:29,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 17:14:29,641 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:14:29,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:29,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 17:14:29,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-06 17:14:29,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:29,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:29,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92610095] [2021-12-06 17:14:29,728 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:29,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131206469] [2021-12-06 17:14:29,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131206469] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:29,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:29,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 17:14:29,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829458775] [2021-12-06 17:14:29,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:29,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:14:29,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:29,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:14:29,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:14:29,729 INFO L87 Difference]: Start difference. First operand 554 states and 676 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:14:29,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:29,769 INFO L93 Difference]: Finished difference Result 878 states and 1076 transitions. [2021-12-06 17:14:29,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 17:14:29,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 112 [2021-12-06 17:14:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:29,771 INFO L225 Difference]: With dead ends: 878 [2021-12-06 17:14:29,771 INFO L226 Difference]: Without dead ends: 487 [2021-12-06 17:14:29,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:14:29,773 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:29,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 252 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:29,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-06 17:14:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 486. [2021-12-06 17:14:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 378 states have (on average 1.1587301587301588) internal successors, (438), 378 states have internal predecessors, (438), 65 states have call successors, (65), 33 states have call predecessors, (65), 36 states have return successors, (76), 74 states have call predecessors, (76), 65 states have call successors, (76) [2021-12-06 17:14:29,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 579 transitions. [2021-12-06 17:14:29,790 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 579 transitions. Word has length 112 [2021-12-06 17:14:29,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:29,790 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 579 transitions. [2021-12-06 17:14:29,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 17:14:29,790 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 579 transitions. [2021-12-06 17:14:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 17:14:29,791 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:29,791 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 17:14:29,823 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 17:14:29,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:29,992 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:29,993 INFO L85 PathProgramCache]: Analyzing trace with hash -158640522, now seen corresponding path program 1 times [2021-12-06 17:14:29,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:29,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223062279] [2021-12-06 17:14:29,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:29,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:30,012 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:30,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451869331] [2021-12-06 17:14:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:30,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:30,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:30,016 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:30,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 17:14:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:30,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 17:14:30,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-06 17:14:30,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-06 17:14:30,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:30,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223062279] [2021-12-06 17:14:30,332 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:30,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451869331] [2021-12-06 17:14:30,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451869331] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:30,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:30,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-12-06 17:14:30,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120036313] [2021-12-06 17:14:30,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:30,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 17:14:30,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:30,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 17:14:30,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:14:30,333 INFO L87 Difference]: Start difference. First operand 486 states and 579 transitions. Second operand has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 17:14:30,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:30,904 INFO L93 Difference]: Finished difference Result 874 states and 1068 transitions. [2021-12-06 17:14:30,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 17:14:30,904 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 114 [2021-12-06 17:14:30,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:30,907 INFO L225 Difference]: With dead ends: 874 [2021-12-06 17:14:30,907 INFO L226 Difference]: Without dead ends: 529 [2021-12-06 17:14:30,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2021-12-06 17:14:30,909 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 118 mSDsluCounter, 843 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:30,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 917 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 488 Invalid, 0 Unknown, 45 Unchecked, 0.3s Time] [2021-12-06 17:14:30,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-12-06 17:14:30,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 508. [2021-12-06 17:14:30,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 396 states have (on average 1.1464646464646464) internal successors, (454), 395 states have internal predecessors, (454), 66 states have call successors, (66), 34 states have call predecessors, (66), 39 states have return successors, (81), 78 states have call predecessors, (81), 66 states have call successors, (81) [2021-12-06 17:14:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 601 transitions. [2021-12-06 17:14:30,928 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 601 transitions. Word has length 114 [2021-12-06 17:14:30,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:30,928 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 601 transitions. [2021-12-06 17:14:30,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 4.411764705882353) internal successors, (75), 16 states have internal predecessors, (75), 9 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 17:14:30,928 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 601 transitions. [2021-12-06 17:14:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-06 17:14:30,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:30,930 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:30,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-06 17:14:31,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:31,131 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:31,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:31,132 INFO L85 PathProgramCache]: Analyzing trace with hash 703817343, now seen corresponding path program 1 times [2021-12-06 17:14:31,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:31,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934113276] [2021-12-06 17:14:31,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:31,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:31,145 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:31,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [403821114] [2021-12-06 17:14:31,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:31,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:31,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:31,146 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:31,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-06 17:14:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:31,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 17:14:31,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:31,378 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 82 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-12-06 17:14:31,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:31,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:31,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934113276] [2021-12-06 17:14:31,514 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:31,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403821114] [2021-12-06 17:14:31,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403821114] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:14:31,514 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:14:31,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-06 17:14:31,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840655430] [2021-12-06 17:14:31,514 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:31,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:14:31,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:14:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-12-06 17:14:31,515 INFO L87 Difference]: Start difference. First operand 508 states and 601 transitions. Second operand has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-06 17:14:33,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-06 17:14:33,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:33,902 INFO L93 Difference]: Finished difference Result 1053 states and 1314 transitions. [2021-12-06 17:14:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:14:33,902 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 119 [2021-12-06 17:14:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:33,905 INFO L225 Difference]: With dead ends: 1053 [2021-12-06 17:14:33,905 INFO L226 Difference]: Without dead ends: 715 [2021-12-06 17:14:33,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2021-12-06 17:14:33,907 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 82 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:33,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 911 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 874 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 17:14:33,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-12-06 17:14:33,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 612. [2021-12-06 17:14:33,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 476 states have (on average 1.1596638655462186) internal successors, (552), 477 states have internal predecessors, (552), 84 states have call successors, (84), 39 states have call predecessors, (84), 45 states have return successors, (108), 95 states have call predecessors, (108), 84 states have call successors, (108) [2021-12-06 17:14:33,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 744 transitions. [2021-12-06 17:14:33,924 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 744 transitions. Word has length 119 [2021-12-06 17:14:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:33,925 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 744 transitions. [2021-12-06 17:14:33,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 7 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-06 17:14:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 744 transitions. [2021-12-06 17:14:33,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-06 17:14:33,925 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:33,925 INFO L514 BasicCegarLoop]: trace histogram [12, 10, 7, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:33,945 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-12-06 17:14:34,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-06 17:14:34,126 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:34,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:34,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1295624958, now seen corresponding path program 2 times [2021-12-06 17:14:34,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:34,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746324080] [2021-12-06 17:14:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:34,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:34,131 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:34,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [680409646] [2021-12-06 17:14:34,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:14:34,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:34,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:34,132 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:34,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-06 17:14:34,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:14:34,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:34,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:14:34,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:34,306 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 97 proven. 25 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-06 17:14:34,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 97 proven. 25 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-06 17:14:34,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:34,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746324080] [2021-12-06 17:14:34,421 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:34,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680409646] [2021-12-06 17:14:34,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680409646] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:34,421 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:34,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2021-12-06 17:14:34,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827868177] [2021-12-06 17:14:34,422 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:34,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:14:34,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:34,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:14:34,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:14:34,423 INFO L87 Difference]: Start difference. First operand 612 states and 744 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 8 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-06 17:14:34,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:34,683 INFO L93 Difference]: Finished difference Result 1187 states and 1470 transitions. [2021-12-06 17:14:34,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:14:34,684 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 8 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) Word has length 124 [2021-12-06 17:14:34,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:34,687 INFO L225 Difference]: With dead ends: 1187 [2021-12-06 17:14:34,687 INFO L226 Difference]: Without dead ends: 672 [2021-12-06 17:14:34,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:14:34,688 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 98 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:34,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 570 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:14:34,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-12-06 17:14:34,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 617. [2021-12-06 17:14:34,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 479 states have (on average 1.1565762004175366) internal successors, (554), 482 states have internal predecessors, (554), 85 states have call successors, (85), 40 states have call predecessors, (85), 46 states have return successors, (104), 94 states have call predecessors, (104), 85 states have call successors, (104) [2021-12-06 17:14:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 743 transitions. [2021-12-06 17:14:34,705 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 743 transitions. Word has length 124 [2021-12-06 17:14:34,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:34,705 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 743 transitions. [2021-12-06 17:14:34,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 8 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2021-12-06 17:14:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 743 transitions. [2021-12-06 17:14:34,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-06 17:14:34,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:34,706 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2021-12-06 17:14:34,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2021-12-06 17:14:34,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:34,908 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:34,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1116473682, now seen corresponding path program 1 times [2021-12-06 17:14:34,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:34,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828189630] [2021-12-06 17:14:34,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:34,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:34,928 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:34,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942205102] [2021-12-06 17:14:34,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:34,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:34,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:34,932 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:34,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-06 17:14:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:34,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 17:14:34,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-06 17:14:35,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:35,216 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-06 17:14:35,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:35,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828189630] [2021-12-06 17:14:35,216 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:35,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942205102] [2021-12-06 17:14:35,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942205102] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:35,216 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:35,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 17:14:35,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014020951] [2021-12-06 17:14:35,217 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:35,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:14:35,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:35,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:14:35,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:14:35,218 INFO L87 Difference]: Start difference. First operand 617 states and 743 transitions. Second operand has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 17:14:35,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:35,335 INFO L93 Difference]: Finished difference Result 623 states and 744 transitions. [2021-12-06 17:14:35,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:14:35,335 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 125 [2021-12-06 17:14:35,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:35,338 INFO L225 Difference]: With dead ends: 623 [2021-12-06 17:14:35,338 INFO L226 Difference]: Without dead ends: 622 [2021-12-06 17:14:35,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2021-12-06 17:14:35,338 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 146 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:35,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 410 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:35,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-12-06 17:14:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 617. [2021-12-06 17:14:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 479 states have (on average 1.1524008350730688) internal successors, (552), 482 states have internal predecessors, (552), 85 states have call successors, (85), 40 states have call predecessors, (85), 46 states have return successors, (104), 94 states have call predecessors, (104), 85 states have call successors, (104) [2021-12-06 17:14:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 741 transitions. [2021-12-06 17:14:35,354 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 741 transitions. Word has length 125 [2021-12-06 17:14:35,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:35,354 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 741 transitions. [2021-12-06 17:14:35,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.0) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-12-06 17:14:35,355 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 741 transitions. [2021-12-06 17:14:35,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 17:14:35,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:35,356 INFO L514 BasicCegarLoop]: trace histogram [13, 10, 7, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 17:14:35,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-06 17:14:35,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-06 17:14:35,557 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:35,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash -282687370, now seen corresponding path program 2 times [2021-12-06 17:14:35,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:35,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274981784] [2021-12-06 17:14:35,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:35,559 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:35,573 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:35,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [192296151] [2021-12-06 17:14:35,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:14:35,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:35,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:35,574 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:35,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-06 17:14:35,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:14:35,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:35,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:14:35,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 173 proven. 7 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2021-12-06 17:14:35,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:35,841 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 88 proven. 28 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-06 17:14:35,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:35,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274981784] [2021-12-06 17:14:35,842 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:35,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192296151] [2021-12-06 17:14:35,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192296151] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:35,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:35,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-12-06 17:14:35,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769340036] [2021-12-06 17:14:35,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:35,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 17:14:35,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:35,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 17:14:35,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 17:14:35,843 INFO L87 Difference]: Start difference. First operand 617 states and 741 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:14:35,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:35,939 INFO L93 Difference]: Finished difference Result 1067 states and 1314 transitions. [2021-12-06 17:14:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:14:35,939 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 134 [2021-12-06 17:14:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:35,942 INFO L225 Difference]: With dead ends: 1067 [2021-12-06 17:14:35,942 INFO L226 Difference]: Without dead ends: 622 [2021-12-06 17:14:35,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:14:35,944 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 67 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:35,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 407 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:35,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-12-06 17:14:35,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 607. [2021-12-06 17:14:35,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 471 states have (on average 1.1507430997876857) internal successors, (542), 474 states have internal predecessors, (542), 84 states have call successors, (84), 40 states have call predecessors, (84), 45 states have return successors, (101), 92 states have call predecessors, (101), 84 states have call successors, (101) [2021-12-06 17:14:35,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 727 transitions. [2021-12-06 17:14:35,960 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 727 transitions. Word has length 134 [2021-12-06 17:14:35,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:35,960 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 727 transitions. [2021-12-06 17:14:35,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 6 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 17:14:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 727 transitions. [2021-12-06 17:14:35,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-06 17:14:35,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:35,961 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 9, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:35,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-12-06 17:14:36,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 17:14:36,162 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:36,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:36,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1601794137, now seen corresponding path program 3 times [2021-12-06 17:14:36,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:36,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55950654] [2021-12-06 17:14:36,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:36,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:36,169 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:36,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180390964] [2021-12-06 17:14:36,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:14:36,169 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:36,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:36,170 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:36,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-06 17:14:36,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 17:14:36,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:36,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 17:14:36,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:36,385 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 95 proven. 5 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2021-12-06 17:14:36,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:36,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:36,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55950654] [2021-12-06 17:14:36,733 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:36,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180390964] [2021-12-06 17:14:36,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180390964] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:14:36,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:14:36,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-12-06 17:14:36,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572112715] [2021-12-06 17:14:36,733 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:36,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:14:36,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:36,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:14:36,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:14:36,734 INFO L87 Difference]: Start difference. First operand 607 states and 727 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:14:36,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:36,885 INFO L93 Difference]: Finished difference Result 692 states and 865 transitions. [2021-12-06 17:14:36,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:14:36,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 143 [2021-12-06 17:14:36,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:36,889 INFO L225 Difference]: With dead ends: 692 [2021-12-06 17:14:36,889 INFO L226 Difference]: Without dead ends: 691 [2021-12-06 17:14:36,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:14:36,890 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 28 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:36,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 277 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:36,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-12-06 17:14:36,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 633. [2021-12-06 17:14:36,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 492 states have (on average 1.1443089430894309) internal successors, (563), 494 states have internal predecessors, (563), 84 states have call successors, (84), 40 states have call predecessors, (84), 50 states have return successors, (113), 98 states have call predecessors, (113), 84 states have call successors, (113) [2021-12-06 17:14:36,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 760 transitions. [2021-12-06 17:14:36,908 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 760 transitions. Word has length 143 [2021-12-06 17:14:36,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:36,908 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 760 transitions. [2021-12-06 17:14:36,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:14:36,908 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 760 transitions. [2021-12-06 17:14:36,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-06 17:14:36,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:36,909 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 9, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:36,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2021-12-06 17:14:37,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-12-06 17:14:37,110 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:37,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:37,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1543267888, now seen corresponding path program 1 times [2021-12-06 17:14:37,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:37,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29722389] [2021-12-06 17:14:37,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:37,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:37,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:37,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [713474496] [2021-12-06 17:14:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:37,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:37,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:37,116 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:37,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-06 17:14:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:37,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:14:37,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:37,301 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 26 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-12-06 17:14:37,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:37,572 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 103 proven. 27 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-12-06 17:14:37,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:37,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29722389] [2021-12-06 17:14:37,573 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:37,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713474496] [2021-12-06 17:14:37,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713474496] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:37,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:37,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2021-12-06 17:14:37,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273895284] [2021-12-06 17:14:37,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:37,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:14:37,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:37,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:14:37,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:14:37,574 INFO L87 Difference]: Start difference. First operand 633 states and 760 transitions. Second operand has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-06 17:14:37,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:37,748 INFO L93 Difference]: Finished difference Result 1341 states and 1694 transitions. [2021-12-06 17:14:37,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:14:37,749 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) Word has length 146 [2021-12-06 17:14:37,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:37,752 INFO L225 Difference]: With dead ends: 1341 [2021-12-06 17:14:37,752 INFO L226 Difference]: Without dead ends: 777 [2021-12-06 17:14:37,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 276 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:14:37,754 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 112 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:37,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 268 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:37,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-12-06 17:14:37,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 680. [2021-12-06 17:14:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 528 states have (on average 1.143939393939394) internal successors, (604), 528 states have internal predecessors, (604), 91 states have call successors, (91), 40 states have call predecessors, (91), 54 states have return successors, (126), 111 states have call predecessors, (126), 89 states have call successors, (126) [2021-12-06 17:14:37,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 821 transitions. [2021-12-06 17:14:37,774 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 821 transitions. Word has length 146 [2021-12-06 17:14:37,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:37,774 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 821 transitions. [2021-12-06 17:14:37,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 5.384615384615385) internal successors, (70), 15 states have internal predecessors, (70), 9 states have call successors, (13), 1 states have call predecessors, (13), 4 states have return successors, (13), 6 states have call predecessors, (13), 9 states have call successors, (13) [2021-12-06 17:14:37,774 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 821 transitions. [2021-12-06 17:14:37,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-06 17:14:37,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:37,775 INFO L514 BasicCegarLoop]: trace histogram [17, 14, 9, 8, 8, 8, 8, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:37,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-12-06 17:14:37,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:37,976 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:37,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash -627658407, now seen corresponding path program 4 times [2021-12-06 17:14:37,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:37,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503526905] [2021-12-06 17:14:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:37,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:37,999 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:37,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [123704357] [2021-12-06 17:14:38,000 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:14:38,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:38,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:38,002 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:38,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-12-06 17:14:38,074 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:14:38,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:38,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 17:14:38,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 366 proven. 19 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2021-12-06 17:14:38,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:38,448 INFO L134 CoverageAnalysis]: Checked inductivity of 619 backedges. 184 proven. 86 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-12-06 17:14:38,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:38,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503526905] [2021-12-06 17:14:38,448 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:38,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123704357] [2021-12-06 17:14:38,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123704357] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:38,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:38,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 15 [2021-12-06 17:14:38,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141495045] [2021-12-06 17:14:38,448 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:38,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:14:38,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:38,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:14:38,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:14:38,449 INFO L87 Difference]: Start difference. First operand 680 states and 821 transitions. Second operand has 15 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) [2021-12-06 17:14:38,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:38,661 INFO L93 Difference]: Finished difference Result 1297 states and 1612 transitions. [2021-12-06 17:14:38,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:14:38,662 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) Word has length 163 [2021-12-06 17:14:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:38,666 INFO L225 Difference]: With dead ends: 1297 [2021-12-06 17:14:38,666 INFO L226 Difference]: Without dead ends: 782 [2021-12-06 17:14:38,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:14:38,667 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 126 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:38,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 336 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:14:38,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2021-12-06 17:14:38,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 683. [2021-12-06 17:14:38,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 531 states have (on average 1.1393596986817325) internal successors, (605), 530 states have internal predecessors, (605), 91 states have call successors, (91), 42 states have call predecessors, (91), 54 states have return successors, (135), 110 states have call predecessors, (135), 91 states have call successors, (135) [2021-12-06 17:14:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 831 transitions. [2021-12-06 17:14:38,692 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 831 transitions. Word has length 163 [2021-12-06 17:14:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:38,692 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 831 transitions. [2021-12-06 17:14:38,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.357142857142857) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (14), 6 states have call predecessors, (14), 8 states have call successors, (14) [2021-12-06 17:14:38,692 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 831 transitions. [2021-12-06 17:14:38,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 17:14:38,693 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:38,693 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 9, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:38,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-12-06 17:14:38,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:38,894 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:38,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:38,894 INFO L85 PathProgramCache]: Analyzing trace with hash -916356688, now seen corresponding path program 2 times [2021-12-06 17:14:38,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:38,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098559718] [2021-12-06 17:14:38,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:38,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:38,902 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:38,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104309344] [2021-12-06 17:14:38,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:14:38,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:38,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:38,903 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:38,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-12-06 17:14:39,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:14:39,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:39,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:14:39,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:39,123 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-12-06 17:14:39,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-12-06 17:14:39,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:39,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098559718] [2021-12-06 17:14:39,253 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:39,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104309344] [2021-12-06 17:14:39,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104309344] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:39,253 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:39,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 17:14:39,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242299295] [2021-12-06 17:14:39,254 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:39,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:14:39,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:14:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:14:39,255 INFO L87 Difference]: Start difference. First operand 683 states and 831 transitions. Second operand has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-12-06 17:14:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:39,353 INFO L93 Difference]: Finished difference Result 872 states and 1085 transitions. [2021-12-06 17:14:39,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:14:39,353 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 156 [2021-12-06 17:14:39,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:39,362 INFO L225 Difference]: With dead ends: 872 [2021-12-06 17:14:39,362 INFO L226 Difference]: Without dead ends: 871 [2021-12-06 17:14:39,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:14:39,362 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 75 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:39,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 400 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:39,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-12-06 17:14:39,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 811. [2021-12-06 17:14:39,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 636 states have (on average 1.1540880503144655) internal successors, (734), 638 states have internal predecessors, (734), 114 states have call successors, (114), 42 states have call predecessors, (114), 54 states have return successors, (158), 130 states have call predecessors, (158), 114 states have call successors, (158) [2021-12-06 17:14:39,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1006 transitions. [2021-12-06 17:14:39,385 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1006 transitions. Word has length 156 [2021-12-06 17:14:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:39,386 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1006 transitions. [2021-12-06 17:14:39,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 14 states have internal predecessors, (60), 7 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2021-12-06 17:14:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1006 transitions. [2021-12-06 17:14:39,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-06 17:14:39,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:39,387 INFO L514 BasicCegarLoop]: trace histogram [18, 15, 9, 9, 9, 9, 9, 7, 7, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:39,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2021-12-06 17:14:39,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2021-12-06 17:14:39,588 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:39,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash 495551865, now seen corresponding path program 5 times [2021-12-06 17:14:39,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:39,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773231695] [2021-12-06 17:14:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:39,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:39,609 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:39,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [115994653] [2021-12-06 17:14:39,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:14:39,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:39,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:39,613 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:39,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-12-06 17:14:39,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-12-06 17:14:39,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:39,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 17:14:39,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:39,883 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 307 proven. 137 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2021-12-06 17:14:39,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 307 proven. 144 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2021-12-06 17:14:40,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:40,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773231695] [2021-12-06 17:14:40,327 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:40,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115994653] [2021-12-06 17:14:40,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115994653] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:40,327 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:40,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 21] total 29 [2021-12-06 17:14:40,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453294402] [2021-12-06 17:14:40,327 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:40,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 17:14:40,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:40,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 17:14:40,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=713, Unknown=0, NotChecked=0, Total=812 [2021-12-06 17:14:40,328 INFO L87 Difference]: Start difference. First operand 811 states and 1006 transitions. Second operand has 29 states, 27 states have (on average 4.444444444444445) internal successors, (120), 25 states have internal predecessors, (120), 18 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (21), 10 states have call predecessors, (21), 15 states have call successors, (21) [2021-12-06 17:14:40,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:40,995 INFO L93 Difference]: Finished difference Result 1821 states and 2429 transitions. [2021-12-06 17:14:40,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-06 17:14:40,995 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 4.444444444444445) internal successors, (120), 25 states have internal predecessors, (120), 18 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (21), 10 states have call predecessors, (21), 15 states have call successors, (21) Word has length 173 [2021-12-06 17:14:40,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:41,000 INFO L225 Difference]: With dead ends: 1821 [2021-12-06 17:14:41,000 INFO L226 Difference]: Without dead ends: 1116 [2021-12-06 17:14:41,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=407, Invalid=1849, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 17:14:41,003 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 404 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:41,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 655 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:14:41,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2021-12-06 17:14:41,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 880. [2021-12-06 17:14:41,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 688 states have (on average 1.1526162790697674) internal successors, (793), 694 states have internal predecessors, (793), 123 states have call successors, (123), 47 states have call predecessors, (123), 62 states have return successors, (191), 138 states have call predecessors, (191), 123 states have call successors, (191) [2021-12-06 17:14:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1107 transitions. [2021-12-06 17:14:41,032 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1107 transitions. Word has length 173 [2021-12-06 17:14:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:41,032 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1107 transitions. [2021-12-06 17:14:41,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 4.444444444444445) internal successors, (120), 25 states have internal predecessors, (120), 18 states have call successors, (28), 8 states have call predecessors, (28), 6 states have return successors, (21), 10 states have call predecessors, (21), 15 states have call successors, (21) [2021-12-06 17:14:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1107 transitions. [2021-12-06 17:14:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-06 17:14:41,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:41,034 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 10, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:41,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-12-06 17:14:41,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-12-06 17:14:41,235 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:41,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:41,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1546466844, now seen corresponding path program 3 times [2021-12-06 17:14:41,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:41,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719479098] [2021-12-06 17:14:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:41,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:41,257 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:41,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718873620] [2021-12-06 17:14:41,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:14:41,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:41,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:41,260 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:41,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-12-06 17:14:41,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 17:14:41,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:41,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:14:41,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:41,428 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2021-12-06 17:14:41,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:41,582 INFO L134 CoverageAnalysis]: Checked inductivity of 519 backedges. 63 proven. 3 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2021-12-06 17:14:41,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:41,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719479098] [2021-12-06 17:14:41,582 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:41,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718873620] [2021-12-06 17:14:41,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718873620] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:41,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:41,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-12-06 17:14:41,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715058573] [2021-12-06 17:14:41,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:41,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:14:41,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:41,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:14:41,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:14:41,583 INFO L87 Difference]: Start difference. First operand 880 states and 1107 transitions. Second operand has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 17:14:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:41,781 INFO L93 Difference]: Finished difference Result 987 states and 1259 transitions. [2021-12-06 17:14:41,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 17:14:41,781 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 166 [2021-12-06 17:14:41,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:41,785 INFO L225 Difference]: With dead ends: 987 [2021-12-06 17:14:41,785 INFO L226 Difference]: Without dead ends: 986 [2021-12-06 17:14:41,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 320 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:14:41,786 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 128 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:41,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 592 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:41,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 986 states. [2021-12-06 17:14:41,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 986 to 969. [2021-12-06 17:14:41,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 757 states have (on average 1.154557463672391) internal successors, (874), 761 states have internal predecessors, (874), 134 states have call successors, (134), 52 states have call predecessors, (134), 71 states have return successors, (215), 155 states have call predecessors, (215), 134 states have call successors, (215) [2021-12-06 17:14:41,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1223 transitions. [2021-12-06 17:14:41,813 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1223 transitions. Word has length 166 [2021-12-06 17:14:41,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:41,814 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1223 transitions. [2021-12-06 17:14:41,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.333333333333333) internal successors, (65), 12 states have internal predecessors, (65), 7 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2021-12-06 17:14:41,814 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1223 transitions. [2021-12-06 17:14:41,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-06 17:14:41,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:41,815 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 11, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:41,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-12-06 17:14:42,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-12-06 17:14:42,016 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:42,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:42,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1319903796, now seen corresponding path program 2 times [2021-12-06 17:14:42,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:42,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065496268] [2021-12-06 17:14:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:42,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:42,038 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:42,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212132475] [2021-12-06 17:14:42,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:14:42,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:42,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:42,041 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:42,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-12-06 17:14:42,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:14:42,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:42,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 17:14:42,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:42,262 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2021-12-06 17:14:42,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:42,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:42,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065496268] [2021-12-06 17:14:42,263 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:42,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212132475] [2021-12-06 17:14:42,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212132475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:42,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:42,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 17:14:42,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417071176] [2021-12-06 17:14:42,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:42,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:14:42,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:42,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:14:42,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-06 17:14:42,264 INFO L87 Difference]: Start difference. First operand 969 states and 1223 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-06 17:14:42,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:42,408 INFO L93 Difference]: Finished difference Result 1783 states and 2297 transitions. [2021-12-06 17:14:42,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:14:42,408 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 169 [2021-12-06 17:14:42,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:42,413 INFO L225 Difference]: With dead ends: 1783 [2021-12-06 17:14:42,413 INFO L226 Difference]: Without dead ends: 1062 [2021-12-06 17:14:42,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:14:42,415 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 54 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:42,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 230 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2021-12-06 17:14:42,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 971. [2021-12-06 17:14:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 758 states have (on average 1.154353562005277) internal successors, (875), 763 states have internal predecessors, (875), 134 states have call successors, (134), 52 states have call predecessors, (134), 72 states have return successors, (228), 155 states have call predecessors, (228), 134 states have call successors, (228) [2021-12-06 17:14:42,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1237 transitions. [2021-12-06 17:14:42,448 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1237 transitions. Word has length 169 [2021-12-06 17:14:42,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:42,448 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1237 transitions. [2021-12-06 17:14:42,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-12-06 17:14:42,448 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1237 transitions. [2021-12-06 17:14:42,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 17:14:42,449 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:42,449 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 11, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:42,469 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-12-06 17:14:42,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-12-06 17:14:42,650 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:42,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:42,650 INFO L85 PathProgramCache]: Analyzing trace with hash 308290772, now seen corresponding path program 3 times [2021-12-06 17:14:42,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:42,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824495011] [2021-12-06 17:14:42,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:42,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:42,655 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:42,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1980843223] [2021-12-06 17:14:42,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:14:42,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:42,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:42,656 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:42,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-12-06 17:14:42,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 17:14:42,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:42,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:14:42,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-12-06 17:14:42,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:43,044 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2021-12-06 17:14:43,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:43,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824495011] [2021-12-06 17:14:43,045 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:43,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980843223] [2021-12-06 17:14:43,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980843223] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:43,045 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:43,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-12-06 17:14:43,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463507513] [2021-12-06 17:14:43,045 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:43,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:14:43,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:43,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:14:43,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:14:43,046 INFO L87 Difference]: Start difference. First operand 971 states and 1237 transitions. Second operand has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-12-06 17:14:43,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:43,172 INFO L93 Difference]: Finished difference Result 973 states and 1237 transitions. [2021-12-06 17:14:43,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:14:43,173 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 179 [2021-12-06 17:14:43,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:43,177 INFO L225 Difference]: With dead ends: 973 [2021-12-06 17:14:43,177 INFO L226 Difference]: Without dead ends: 972 [2021-12-06 17:14:43,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:14:43,178 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 77 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:43,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 434 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:14:43,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2021-12-06 17:14:43,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 971. [2021-12-06 17:14:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 758 states have (on average 1.1437994722955145) internal successors, (867), 763 states have internal predecessors, (867), 134 states have call successors, (134), 52 states have call predecessors, (134), 72 states have return successors, (228), 155 states have call predecessors, (228), 134 states have call successors, (228) [2021-12-06 17:14:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1229 transitions. [2021-12-06 17:14:43,206 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1229 transitions. Word has length 179 [2021-12-06 17:14:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:43,207 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1229 transitions. [2021-12-06 17:14:43,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 9 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-12-06 17:14:43,207 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1229 transitions. [2021-12-06 17:14:43,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-06 17:14:43,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:43,208 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 10, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:43,238 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2021-12-06 17:14:43,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-12-06 17:14:43,408 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:43,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:43,409 INFO L85 PathProgramCache]: Analyzing trace with hash 252749190, now seen corresponding path program 4 times [2021-12-06 17:14:43,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:43,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768724290] [2021-12-06 17:14:43,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:43,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:43,414 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:43,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459444770] [2021-12-06 17:14:43,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:14:43,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:43,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:43,415 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:43,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-12-06 17:14:43,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:14:43,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:43,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:14:43,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:43,639 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 31 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2021-12-06 17:14:43,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 601 backedges. 217 proven. 32 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2021-12-06 17:14:43,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:43,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768724290] [2021-12-06 17:14:43,895 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:43,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459444770] [2021-12-06 17:14:43,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459444770] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:43,896 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:43,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 17 [2021-12-06 17:14:43,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939651407] [2021-12-06 17:14:43,896 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:43,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:14:43,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:43,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:14:43,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:14:43,897 INFO L87 Difference]: Start difference. First operand 971 states and 1229 transitions. Second operand has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-06 17:14:44,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:44,199 INFO L93 Difference]: Finished difference Result 1901 states and 2486 transitions. [2021-12-06 17:14:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:14:44,200 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) Word has length 176 [2021-12-06 17:14:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:44,205 INFO L225 Difference]: With dead ends: 1901 [2021-12-06 17:14:44,205 INFO L226 Difference]: Without dead ends: 1222 [2021-12-06 17:14:44,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 338 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:14:44,207 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 133 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:44,207 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 732 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:14:44,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1222 states. [2021-12-06 17:14:44,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1222 to 1166. [2021-12-06 17:14:44,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 911 states have (on average 1.1536772777167947) internal successors, (1051), 913 states have internal predecessors, (1051), 169 states have call successors, (169), 58 states have call predecessors, (169), 79 states have return successors, (294), 194 states have call predecessors, (294), 169 states have call successors, (294) [2021-12-06 17:14:44,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1514 transitions. [2021-12-06 17:14:44,244 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1514 transitions. Word has length 176 [2021-12-06 17:14:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:44,245 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 1514 transitions. [2021-12-06 17:14:44,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 6.615384615384615) internal successors, (86), 16 states have internal predecessors, (86), 10 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-06 17:14:44,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1514 transitions. [2021-12-06 17:14:44,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2021-12-06 17:14:44,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:44,246 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 10, 8, 8, 8, 8, 8, 8, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:44,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-12-06 17:14:44,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-12-06 17:14:44,446 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1681944103, now seen corresponding path program 6 times [2021-12-06 17:14:44,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:44,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817251197] [2021-12-06 17:14:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:44,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:44,452 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:44,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647154470] [2021-12-06 17:14:44,452 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 17:14:44,452 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:44,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:44,453 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:44,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-12-06 17:14:44,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-12-06 17:14:44,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:44,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-06 17:14:44,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 815 backedges. 221 proven. 50 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2021-12-06 17:14:44,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:45,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:45,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817251197] [2021-12-06 17:14:45,257 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:45,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647154470] [2021-12-06 17:14:45,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647154470] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:14:45,258 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:14:45,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-12-06 17:14:45,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689591599] [2021-12-06 17:14:45,258 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:45,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 17:14:45,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:45,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 17:14:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:14:45,259 INFO L87 Difference]: Start difference. First operand 1166 states and 1514 transitions. Second operand has 22 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 8 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-06 17:14:45,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:45,904 INFO L93 Difference]: Finished difference Result 1541 states and 2187 transitions. [2021-12-06 17:14:45,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 17:14:45,905 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 8 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) Word has length 193 [2021-12-06 17:14:45,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:45,911 INFO L225 Difference]: With dead ends: 1541 [2021-12-06 17:14:45,912 INFO L226 Difference]: Without dead ends: 1540 [2021-12-06 17:14:45,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 17:14:45,913 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 171 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:45,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 668 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 613 Invalid, 0 Unknown, 110 Unchecked, 0.3s Time] [2021-12-06 17:14:45,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1540 states. [2021-12-06 17:14:45,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1540 to 1332. [2021-12-06 17:14:45,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1332 states, 1040 states have (on average 1.1576923076923078) internal successors, (1204), 1035 states have internal predecessors, (1204), 193 states have call successors, (193), 67 states have call predecessors, (193), 92 states have return successors, (387), 229 states have call predecessors, (387), 193 states have call successors, (387) [2021-12-06 17:14:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1332 states to 1332 states and 1784 transitions. [2021-12-06 17:14:45,957 INFO L78 Accepts]: Start accepts. Automaton has 1332 states and 1784 transitions. Word has length 193 [2021-12-06 17:14:45,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:45,958 INFO L470 AbstractCegarLoop]: Abstraction has 1332 states and 1784 transitions. [2021-12-06 17:14:45,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.3) internal successors, (66), 20 states have internal predecessors, (66), 8 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (10), 7 states have call predecessors, (10), 6 states have call successors, (10) [2021-12-06 17:14:45,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1332 states and 1784 transitions. [2021-12-06 17:14:45,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-06 17:14:45,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:45,959 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 12, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:45,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2021-12-06 17:14:46,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2021-12-06 17:14:46,160 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:46,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1231172729, now seen corresponding path program 1 times [2021-12-06 17:14:46,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:46,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493381009] [2021-12-06 17:14:46,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:46,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:46,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:46,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2004814860] [2021-12-06 17:14:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:46,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:46,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:46,168 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:46,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-12-06 17:14:46,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:46,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:14:46,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2021-12-06 17:14:46,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:14:46,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:46,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493381009] [2021-12-06 17:14:46,346 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:46,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004814860] [2021-12-06 17:14:46,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004814860] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:14:46,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:14:46,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:14:46,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737992390] [2021-12-06 17:14:46,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:14:46,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:14:46,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:46,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:14:46,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:46,347 INFO L87 Difference]: Start difference. First operand 1332 states and 1784 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:14:46,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:46,387 INFO L93 Difference]: Finished difference Result 1465 states and 1951 transitions. [2021-12-06 17:14:46,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:14:46,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 197 [2021-12-06 17:14:46,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:46,394 INFO L225 Difference]: With dead ends: 1465 [2021-12-06 17:14:46,394 INFO L226 Difference]: Without dead ends: 1462 [2021-12-06 17:14:46,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:14:46,395 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 14 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:46,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 144 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:14:46,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2021-12-06 17:14:46,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1334. [2021-12-06 17:14:46,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1041 states have (on average 1.1575408261287223) internal successors, (1205), 1037 states have internal predecessors, (1205), 193 states have call successors, (193), 67 states have call predecessors, (193), 93 states have return successors, (400), 229 states have call predecessors, (400), 193 states have call successors, (400) [2021-12-06 17:14:46,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1798 transitions. [2021-12-06 17:14:46,441 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1798 transitions. Word has length 197 [2021-12-06 17:14:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:46,441 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 1798 transitions. [2021-12-06 17:14:46,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (7), 1 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:14:46,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1798 transitions. [2021-12-06 17:14:46,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-12-06 17:14:46,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:46,444 INFO L514 BasicCegarLoop]: trace histogram [21, 18, 11, 11, 11, 11, 10, 9, 9, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:46,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-12-06 17:14:46,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-12-06 17:14:46,644 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:46,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:46,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1918041, now seen corresponding path program 7 times [2021-12-06 17:14:46,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:46,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761567398] [2021-12-06 17:14:46,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:46,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:46,653 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:46,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [479009201] [2021-12-06 17:14:46,653 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 17:14:46,653 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:46,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:46,654 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:46,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-12-06 17:14:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:14:46,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:14:46,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:14:46,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 608 proven. 2 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2021-12-06 17:14:46,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:14:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 300 proven. 96 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2021-12-06 17:14:47,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:14:47,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761567398] [2021-12-06 17:14:47,395 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:14:47,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479009201] [2021-12-06 17:14:47,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479009201] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:14:47,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:14:47,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 21 [2021-12-06 17:14:47,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204173987] [2021-12-06 17:14:47,396 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:14:47,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 17:14:47,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:14:47,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 17:14:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=351, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:14:47,397 INFO L87 Difference]: Start difference. First operand 1334 states and 1798 transitions. Second operand has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 12 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2021-12-06 17:14:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:14:47,730 INFO L93 Difference]: Finished difference Result 2756 states and 3744 transitions. [2021-12-06 17:14:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 17:14:47,731 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 12 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) Word has length 213 [2021-12-06 17:14:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:14:47,738 INFO L225 Difference]: With dead ends: 2756 [2021-12-06 17:14:47,738 INFO L226 Difference]: Without dead ends: 1474 [2021-12-06 17:14:47,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 405 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=673, Unknown=0, NotChecked=0, Total=812 [2021-12-06 17:14:47,742 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 108 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:14:47,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 326 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 17:14:47,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-12-06 17:14:47,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1334. [2021-12-06 17:14:47,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1334 states, 1041 states have (on average 1.1450528338136408) internal successors, (1192), 1037 states have internal predecessors, (1192), 193 states have call successors, (193), 67 states have call predecessors, (193), 93 states have return successors, (382), 229 states have call predecessors, (382), 193 states have call successors, (382) [2021-12-06 17:14:47,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1334 states to 1334 states and 1767 transitions. [2021-12-06 17:14:47,787 INFO L78 Accepts]: Start accepts. Automaton has 1334 states and 1767 transitions. Word has length 213 [2021-12-06 17:14:47,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:14:47,787 INFO L470 AbstractCegarLoop]: Abstraction has 1334 states and 1767 transitions. [2021-12-06 17:14:47,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.904761904761905) internal successors, (103), 21 states have internal predecessors, (103), 12 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 10 states have call predecessors, (20), 12 states have call successors, (20) [2021-12-06 17:14:47,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1334 states and 1767 transitions. [2021-12-06 17:14:47,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-06 17:14:47,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:14:47,789 INFO L514 BasicCegarLoop]: trace histogram [19, 18, 11, 8, 8, 8, 8, 8, 8, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:14:47,820 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2021-12-06 17:14:47,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:47,990 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:14:47,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:14:47,991 INFO L85 PathProgramCache]: Analyzing trace with hash 234625485, now seen corresponding path program 3 times [2021-12-06 17:14:47,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:14:47,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47906567] [2021-12-06 17:14:47,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:14:47,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:14:48,012 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:14:48,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480480526] [2021-12-06 17:14:48,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:14:48,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:14:48,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:14:48,016 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:14:48,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-12-06 17:14:48,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 17:14:48,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:14:48,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 17:14:48,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:02,774 INFO L134 CoverageAnalysis]: Checked inductivity of 896 backedges. 214 proven. 13 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2021-12-06 17:15:02,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:03,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:03,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47906567] [2021-12-06 17:15:03,512 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:03,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480480526] [2021-12-06 17:15:03,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480480526] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:15:03,512 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:15:03,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-12-06 17:15:03,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969603895] [2021-12-06 17:15:03,512 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:03,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 17:15:03,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:03,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 17:15:03,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=129, Unknown=6, NotChecked=0, Total=182 [2021-12-06 17:15:03,513 INFO L87 Difference]: Start difference. First operand 1334 states and 1767 transitions. Second operand has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:15:12,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:12,066 INFO L93 Difference]: Finished difference Result 1416 states and 1961 transitions. [2021-12-06 17:15:12,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:15:12,067 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 204 [2021-12-06 17:15:12,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:12,073 INFO L225 Difference]: With dead ends: 1416 [2021-12-06 17:15:12,073 INFO L226 Difference]: Without dead ends: 1415 [2021-12-06 17:15:12,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=70, Invalid=196, Unknown=6, NotChecked=0, Total=272 [2021-12-06 17:15:12,074 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 32 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:12,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 247 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 60 Unchecked, 0.1s Time] [2021-12-06 17:15:12,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2021-12-06 17:15:12,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 1345. [2021-12-06 17:15:12,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1049 states have (on average 1.140133460438513) internal successors, (1196), 1047 states have internal predecessors, (1196), 193 states have call successors, (193), 67 states have call predecessors, (193), 96 states have return successors, (389), 230 states have call predecessors, (389), 193 states have call successors, (389) [2021-12-06 17:15:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1778 transitions. [2021-12-06 17:15:12,114 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1778 transitions. Word has length 204 [2021-12-06 17:15:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:12,114 INFO L470 AbstractCegarLoop]: Abstraction has 1345 states and 1778 transitions. [2021-12-06 17:15:12,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 17:15:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1778 transitions. [2021-12-06 17:15:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-06 17:15:12,115 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:12,115 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 12, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:12,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2021-12-06 17:15:12,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2021-12-06 17:15:12,316 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:15:12,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:12,316 INFO L85 PathProgramCache]: Analyzing trace with hash 611678105, now seen corresponding path program 2 times [2021-12-06 17:15:12,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:12,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396744285] [2021-12-06 17:15:12,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:12,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:12,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:12,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415279018] [2021-12-06 17:15:12,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:15:12,322 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:12,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:12,322 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:12,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-12-06 17:15:12,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:15:12,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:15:12,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:15:12,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2021-12-06 17:15:12,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:13,108 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 122 proven. 21 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2021-12-06 17:15:13,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:13,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396744285] [2021-12-06 17:15:13,108 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:13,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415279018] [2021-12-06 17:15:13,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415279018] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:15:13,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:15:13,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2021-12-06 17:15:13,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655262940] [2021-12-06 17:15:13,109 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:13,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 17:15:13,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:13,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 17:15:13,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:15:13,110 INFO L87 Difference]: Start difference. First operand 1345 states and 1778 transitions. Second operand has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2021-12-06 17:15:14,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:14,071 INFO L93 Difference]: Finished difference Result 2377 states and 3174 transitions. [2021-12-06 17:15:14,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 17:15:14,072 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 207 [2021-12-06 17:15:14,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:14,077 INFO L225 Difference]: With dead ends: 2377 [2021-12-06 17:15:14,077 INFO L226 Difference]: Without dead ends: 1356 [2021-12-06 17:15:14,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 424 GetRequests, 397 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=671, Unknown=0, NotChecked=0, Total=812 [2021-12-06 17:15:14,080 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 124 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:14,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 488 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:15:14,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2021-12-06 17:15:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1341. [2021-12-06 17:15:14,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1341 states, 1045 states have (on average 1.14066985645933) internal successors, (1192), 1045 states have internal predecessors, (1192), 191 states have call successors, (191), 69 states have call predecessors, (191), 98 states have return successors, (379), 226 states have call predecessors, (379), 191 states have call successors, (379) [2021-12-06 17:15:14,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1762 transitions. [2021-12-06 17:15:14,119 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1762 transitions. Word has length 207 [2021-12-06 17:15:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:14,119 INFO L470 AbstractCegarLoop]: Abstraction has 1341 states and 1762 transitions. [2021-12-06 17:15:14,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 16 states have internal predecessors, (77), 9 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2021-12-06 17:15:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1762 transitions. [2021-12-06 17:15:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-06 17:15:14,120 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:14,120 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 11, 9, 9, 9, 9, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:14,139 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-12-06 17:15:14,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:14,321 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:15:14,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:14,323 INFO L85 PathProgramCache]: Analyzing trace with hash 220750957, now seen corresponding path program 4 times [2021-12-06 17:15:14,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:14,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993948885] [2021-12-06 17:15:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:14,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:14,342 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:14,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [671016489] [2021-12-06 17:15:14,343 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:15:14,343 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:14,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:14,346 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:14,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-12-06 17:15:14,415 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:15:14,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:15:14,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 17:15:14,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:14,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 244 proven. 120 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked. [2021-12-06 17:15:14,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 244 proven. 121 refuted. 0 times theorem prover too weak. 652 trivial. 0 not checked. [2021-12-06 17:15:15,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:15,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993948885] [2021-12-06 17:15:15,428 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:15,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671016489] [2021-12-06 17:15:15,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671016489] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:15:15,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:15:15,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 18 [2021-12-06 17:15:15,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250081888] [2021-12-06 17:15:15,429 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:15,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 17:15:15,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:15,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 17:15:15,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:15:15,430 INFO L87 Difference]: Start difference. First operand 1341 states and 1762 transitions. Second operand has 18 states, 15 states have (on average 5.933333333333334) internal successors, (89), 17 states have internal predecessors, (89), 10 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 7 states have call predecessors, (16), 9 states have call successors, (16) [2021-12-06 17:15:16,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:16,602 INFO L93 Difference]: Finished difference Result 2970 states and 4050 transitions. [2021-12-06 17:15:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 17:15:16,603 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 5.933333333333334) internal successors, (89), 17 states have internal predecessors, (89), 10 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 7 states have call predecessors, (16), 9 states have call successors, (16) Word has length 214 [2021-12-06 17:15:16,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:16,609 INFO L225 Difference]: With dead ends: 2970 [2021-12-06 17:15:16,609 INFO L226 Difference]: Without dead ends: 1949 [2021-12-06 17:15:16,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2021-12-06 17:15:16,614 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 296 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:16,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 327 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 17:15:16,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2021-12-06 17:15:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1656. [2021-12-06 17:15:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1293 states have (on average 1.1469450889404487) internal successors, (1483), 1285 states have internal predecessors, (1483), 245 states have call successors, (245), 81 states have call predecessors, (245), 111 states have return successors, (491), 289 states have call predecessors, (491), 245 states have call successors, (491) [2021-12-06 17:15:16,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2219 transitions. [2021-12-06 17:15:16,670 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2219 transitions. Word has length 214 [2021-12-06 17:15:16,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:16,670 INFO L470 AbstractCegarLoop]: Abstraction has 1656 states and 2219 transitions. [2021-12-06 17:15:16,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 5.933333333333334) internal successors, (89), 17 states have internal predecessors, (89), 10 states have call successors, (17), 3 states have call predecessors, (17), 5 states have return successors, (16), 7 states have call predecessors, (16), 9 states have call successors, (16) [2021-12-06 17:15:16,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2219 transitions. [2021-12-06 17:15:16,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2021-12-06 17:15:16,672 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:16,672 INFO L514 BasicCegarLoop]: trace histogram [22, 19, 12, 12, 12, 12, 10, 10, 10, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:16,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2021-12-06 17:15:16,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:16,872 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:15:16,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:16,873 INFO L85 PathProgramCache]: Analyzing trace with hash -365041671, now seen corresponding path program 8 times [2021-12-06 17:15:16,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:16,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074378372] [2021-12-06 17:15:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:16,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:16,878 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:16,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346826096] [2021-12-06 17:15:16,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:15:16,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:16,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:16,879 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:16,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-12-06 17:15:16,935 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:15:16,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:15:16,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 17:15:16,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 276 proven. 85 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2021-12-06 17:15:17,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:17,639 INFO L134 CoverageAnalysis]: Checked inductivity of 1204 backedges. 276 proven. 85 refuted. 0 times theorem prover too weak. 843 trivial. 0 not checked. [2021-12-06 17:15:17,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:17,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074378372] [2021-12-06 17:15:17,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:17,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346826096] [2021-12-06 17:15:17,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346826096] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:15:17,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:15:17,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2021-12-06 17:15:17,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904851628] [2021-12-06 17:15:17,640 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:17,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 17:15:17,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:17,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 17:15:17,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:15:17,641 INFO L87 Difference]: Start difference. First operand 1656 states and 2219 transitions. Second operand has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 16 states have internal predecessors, (70), 10 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-06 17:15:18,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:18,760 INFO L93 Difference]: Finished difference Result 3398 states and 4572 transitions. [2021-12-06 17:15:18,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 17:15:18,761 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 16 states have internal predecessors, (70), 10 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) Word has length 223 [2021-12-06 17:15:18,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:18,765 INFO L225 Difference]: With dead ends: 3398 [2021-12-06 17:15:18,765 INFO L226 Difference]: Without dead ends: 1861 [2021-12-06 17:15:18,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=189, Invalid=933, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 17:15:18,770 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 124 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:18,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 649 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 17:15:18,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2021-12-06 17:15:18,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1668. [2021-12-06 17:15:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1302 states have (on average 1.1436251920122888) internal successors, (1489), 1294 states have internal predecessors, (1489), 246 states have call successors, (246), 83 states have call predecessors, (246), 113 states have return successors, (442), 290 states have call predecessors, (442), 246 states have call successors, (442) [2021-12-06 17:15:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2177 transitions. [2021-12-06 17:15:18,819 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2177 transitions. Word has length 223 [2021-12-06 17:15:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:18,819 INFO L470 AbstractCegarLoop]: Abstraction has 1668 states and 2177 transitions. [2021-12-06 17:15:18,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6842105263157894) internal successors, (70), 16 states have internal predecessors, (70), 10 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 6 states have call predecessors, (9), 6 states have call successors, (9) [2021-12-06 17:15:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2177 transitions. [2021-12-06 17:15:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-06 17:15:18,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:18,821 INFO L514 BasicCegarLoop]: trace histogram [23, 20, 12, 11, 11, 11, 11, 9, 9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:18,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Ended with exit code 0 [2021-12-06 17:15:19,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:19,022 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:15:19,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:19,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2120597846, now seen corresponding path program 5 times [2021-12-06 17:15:19,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:19,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271950159] [2021-12-06 17:15:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:19,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:19,031 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:19,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978130931] [2021-12-06 17:15:19,031 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:15:19,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:19,032 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:19,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-12-06 17:15:19,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-12-06 17:15:19,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:15:19,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:15:19,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 588 proven. 0 refuted. 0 times theorem prover too weak. 662 trivial. 0 not checked. [2021-12-06 17:15:19,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:15:19,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:19,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271950159] [2021-12-06 17:15:19,417 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:19,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978130931] [2021-12-06 17:15:19,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978130931] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:15:19,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:15:19,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:15:19,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073140612] [2021-12-06 17:15:19,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:15:19,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:15:19,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:19,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:15:19,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:15:19,418 INFO L87 Difference]: Start difference. First operand 1668 states and 2177 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 17:15:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:19,773 INFO L93 Difference]: Finished difference Result 2992 states and 3966 transitions. [2021-12-06 17:15:19,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:15:19,774 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 232 [2021-12-06 17:15:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:19,777 INFO L225 Difference]: With dead ends: 2992 [2021-12-06 17:15:19,777 INFO L226 Difference]: Without dead ends: 1633 [2021-12-06 17:15:19,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:15:19,781 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 47 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:19,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 334 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 17:15:19,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2021-12-06 17:15:19,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1624. [2021-12-06 17:15:19,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1624 states, 1270 states have (on average 1.1425196850393702) internal successors, (1451), 1260 states have internal predecessors, (1451), 238 states have call successors, (238), 81 states have call predecessors, (238), 109 states have return successors, (408), 282 states have call predecessors, (408), 238 states have call successors, (408) [2021-12-06 17:15:19,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1624 states to 1624 states and 2097 transitions. [2021-12-06 17:15:19,827 INFO L78 Accepts]: Start accepts. Automaton has 1624 states and 2097 transitions. Word has length 232 [2021-12-06 17:15:19,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:19,827 INFO L470 AbstractCegarLoop]: Abstraction has 1624 states and 2097 transitions. [2021-12-06 17:15:19,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 8 states have internal predecessors, (64), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 17:15:19,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1624 states and 2097 transitions. [2021-12-06 17:15:19,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-12-06 17:15:19,829 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:19,829 INFO L514 BasicCegarLoop]: trace histogram [24, 21, 12, 12, 12, 12, 12, 10, 10, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:19,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2021-12-06 17:15:20,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2021-12-06 17:15:20,030 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:15:20,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:20,031 INFO L85 PathProgramCache]: Analyzing trace with hash -369924150, now seen corresponding path program 6 times [2021-12-06 17:15:20,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:20,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025254305] [2021-12-06 17:15:20,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:20,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:20,052 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:20,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [28507293] [2021-12-06 17:15:20,053 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 17:15:20,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:20,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:20,056 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:20,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-12-06 17:15:20,171 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-12-06 17:15:20,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:15:20,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-06 17:15:20,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:31,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 365 proven. 34 refuted. 2 times theorem prover too weak. 994 trivial. 0 not checked. [2021-12-06 17:15:31,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:33,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:33,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025254305] [2021-12-06 17:15:33,035 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:33,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28507293] [2021-12-06 17:15:33,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28507293] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:15:33,036 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:15:33,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-12-06 17:15:33,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134775525] [2021-12-06 17:15:33,036 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:33,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:15:33,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:33,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:15:33,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=271, Unknown=5, NotChecked=0, Total=342 [2021-12-06 17:15:33,037 INFO L87 Difference]: Start difference. First operand 1624 states and 2097 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 17:15:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:52,559 INFO L93 Difference]: Finished difference Result 1730 states and 2308 transitions. [2021-12-06 17:15:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 17:15:52,561 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 242 [2021-12-06 17:15:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:52,564 INFO L225 Difference]: With dead ends: 1730 [2021-12-06 17:15:52,564 INFO L226 Difference]: Without dead ends: 1729 [2021-12-06 17:15:52,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=159, Invalid=533, Unknown=10, NotChecked=0, Total=702 [2021-12-06 17:15:52,565 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 14 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:52,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 358 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 102 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2021-12-06 17:15:52,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-12-06 17:15:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1639. [2021-12-06 17:15:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1639 states, 1282 states have (on average 1.139625585023401) internal successors, (1461), 1272 states have internal predecessors, (1461), 238 states have call successors, (238), 81 states have call predecessors, (238), 112 states have return successors, (415), 285 states have call predecessors, (415), 238 states have call successors, (415) [2021-12-06 17:15:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2114 transitions. [2021-12-06 17:15:52,616 INFO L78 Accepts]: Start accepts. Automaton has 1639 states and 2114 transitions. Word has length 242 [2021-12-06 17:15:52,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:52,616 INFO L470 AbstractCegarLoop]: Abstraction has 1639 states and 2114 transitions. [2021-12-06 17:15:52,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 4 states have call successors, (9), 1 states have call predecessors, (9), 5 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 17:15:52,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1639 states and 2114 transitions. [2021-12-06 17:15:52,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2021-12-06 17:15:52,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:52,618 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 12, 11, 11, 11, 11, 11, 11, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:52,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-12-06 17:15:52,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:52,819 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:15:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:52,820 INFO L85 PathProgramCache]: Analyzing trace with hash 473879306, now seen corresponding path program 7 times [2021-12-06 17:15:52,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:52,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936232274] [2021-12-06 17:15:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:52,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:52,842 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:52,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1998358867] [2021-12-06 17:15:52,843 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 17:15:52,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:52,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:52,845 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:52,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-12-06 17:15:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:52,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:15:52,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 585 proven. 20 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2021-12-06 17:15:53,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:53,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1387 backedges. 99 proven. 42 refuted. 0 times theorem prover too weak. 1246 trivial. 0 not checked. [2021-12-06 17:15:53,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:53,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936232274] [2021-12-06 17:15:53,683 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:53,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998358867] [2021-12-06 17:15:53,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998358867] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:15:53,683 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:15:53,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 17 [2021-12-06 17:15:53,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277924067] [2021-12-06 17:15:53,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:53,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:15:53,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:53,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:15:53,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2021-12-06 17:15:53,684 INFO L87 Difference]: Start difference. First operand 1639 states and 2114 transitions. Second operand has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-12-06 17:15:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:54,524 INFO L93 Difference]: Finished difference Result 1697 states and 2175 transitions. [2021-12-06 17:15:54,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 17:15:54,525 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) Word has length 242 [2021-12-06 17:15:54,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:54,529 INFO L225 Difference]: With dead ends: 1697 [2021-12-06 17:15:54,529 INFO L226 Difference]: Without dead ends: 1652 [2021-12-06 17:15:54,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:15:54,530 INFO L933 BasicCegarLoop]: 65 mSDtfsCounter, 105 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:54,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 702 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:15:54,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-12-06 17:15:54,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1643. [2021-12-06 17:15:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1285 states have (on average 1.1392996108949416) internal successors, (1464), 1275 states have internal predecessors, (1464), 238 states have call successors, (238), 82 states have call predecessors, (238), 113 states have return successors, (415), 285 states have call predecessors, (415), 238 states have call successors, (415) [2021-12-06 17:15:54,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2117 transitions. [2021-12-06 17:15:54,579 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2117 transitions. Word has length 242 [2021-12-06 17:15:54,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:54,580 INFO L470 AbstractCegarLoop]: Abstraction has 1643 states and 2117 transitions. [2021-12-06 17:15:54,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.529411764705882) internal successors, (77), 14 states have internal predecessors, (77), 9 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (14), 7 states have call predecessors, (14), 7 states have call successors, (14) [2021-12-06 17:15:54,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2117 transitions. [2021-12-06 17:15:54,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2021-12-06 17:15:54,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:54,581 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 14, 8, 8, 8, 8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:54,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2021-12-06 17:15:54,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:54,782 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:15:54,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:54,782 INFO L85 PathProgramCache]: Analyzing trace with hash -454291874, now seen corresponding path program 1 times [2021-12-06 17:15:54,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:54,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118419838] [2021-12-06 17:15:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:54,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:54,788 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:54,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [342170299] [2021-12-06 17:15:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:54,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:54,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:54,789 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:54,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-12-06 17:15:54,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:15:54,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:15:54,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 403 proven. 36 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-12-06 17:15:55,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:55,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1261 backedges. 43 proven. 36 refuted. 0 times theorem prover too weak. 1182 trivial. 0 not checked. [2021-12-06 17:15:55,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:55,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118419838] [2021-12-06 17:15:55,659 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:55,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342170299] [2021-12-06 17:15:55,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342170299] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:15:55,659 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:15:55,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2021-12-06 17:15:55,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711521279] [2021-12-06 17:15:55,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:55,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 17:15:55,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 17:15:55,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:15:55,660 INFO L87 Difference]: Start difference. First operand 1643 states and 2117 transitions. Second operand has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-06 17:15:56,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:15:56,349 INFO L93 Difference]: Finished difference Result 3045 states and 3956 transitions. [2021-12-06 17:15:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:15:56,350 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) Word has length 244 [2021-12-06 17:15:56,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:15:56,354 INFO L225 Difference]: With dead ends: 3045 [2021-12-06 17:15:56,354 INFO L226 Difference]: Without dead ends: 1708 [2021-12-06 17:15:56,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=160, Invalid=596, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:15:56,358 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 67 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:15:56,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 697 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:15:56,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2021-12-06 17:15:56,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1682. [2021-12-06 17:15:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1319 states have (on average 1.1387414708112207) internal successors, (1502), 1309 states have internal predecessors, (1502), 243 states have call successors, (243), 82 states have call predecessors, (243), 113 states have return successors, (424), 290 states have call predecessors, (424), 243 states have call successors, (424) [2021-12-06 17:15:56,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2169 transitions. [2021-12-06 17:15:56,411 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2169 transitions. Word has length 244 [2021-12-06 17:15:56,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:15:56,411 INFO L470 AbstractCegarLoop]: Abstraction has 1682 states and 2169 transitions. [2021-12-06 17:15:56,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.666666666666667) internal successors, (84), 18 states have internal predecessors, (84), 8 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 8 states have call predecessors, (15), 8 states have call successors, (15) [2021-12-06 17:15:56,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2169 transitions. [2021-12-06 17:15:56,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-12-06 17:15:56,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:15:56,413 INFO L514 BasicCegarLoop]: trace histogram [30, 27, 17, 17, 17, 17, 15, 15, 14, 14, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:15:56,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2021-12-06 17:15:56,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:56,614 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:15:56,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:15:56,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1126495347, now seen corresponding path program 9 times [2021-12-06 17:15:56,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:15:56,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58288061] [2021-12-06 17:15:56,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:15:56,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:15:56,639 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:15:56,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597521667] [2021-12-06 17:15:56,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:15:56,640 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:15:56,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:15:56,643 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:15:56,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-12-06 17:15:56,764 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-06 17:15:56,764 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:15:56,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 17:15:56,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:15:57,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 1286 proven. 9 refuted. 0 times theorem prover too weak. 1131 trivial. 0 not checked. [2021-12-06 17:15:57,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:15:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2426 backedges. 614 proven. 174 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2021-12-06 17:15:59,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:15:59,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58288061] [2021-12-06 17:15:59,238 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:15:59,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597521667] [2021-12-06 17:15:59,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597521667] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:15:59,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:15:59,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 27 [2021-12-06 17:15:59,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341860595] [2021-12-06 17:15:59,238 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:15:59,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 17:15:59,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:15:59,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 17:15:59,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2021-12-06 17:15:59,239 INFO L87 Difference]: Start difference. First operand 1682 states and 2169 transitions. Second operand has 27 states, 27 states have (on average 4.555555555555555) internal successors, (123), 27 states have internal predecessors, (123), 15 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (24), 13 states have call predecessors, (24), 15 states have call successors, (24) [2021-12-06 17:16:00,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:00,803 INFO L93 Difference]: Finished difference Result 3550 states and 4655 transitions. [2021-12-06 17:16:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 17:16:00,805 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.555555555555555) internal successors, (123), 27 states have internal predecessors, (123), 15 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (24), 13 states have call predecessors, (24), 15 states have call successors, (24) Word has length 307 [2021-12-06 17:16:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:00,810 INFO L225 Difference]: With dead ends: 3550 [2021-12-06 17:16:00,810 INFO L226 Difference]: Without dead ends: 1988 [2021-12-06 17:16:00,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 587 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=226, Invalid=1180, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 17:16:00,814 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 163 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:00,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 414 Invalid, 795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:16:00,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1988 states. [2021-12-06 17:16:00,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1988 to 1804. [2021-12-06 17:16:00,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1429 states have (on average 1.1427571728481456) internal successors, (1633), 1411 states have internal predecessors, (1633), 252 states have call successors, (252), 82 states have call predecessors, (252), 116 states have return successors, (461), 310 states have call predecessors, (461), 252 states have call successors, (461) [2021-12-06 17:16:00,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2346 transitions. [2021-12-06 17:16:00,879 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2346 transitions. Word has length 307 [2021-12-06 17:16:00,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:00,879 INFO L470 AbstractCegarLoop]: Abstraction has 1804 states and 2346 transitions. [2021-12-06 17:16:00,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.555555555555555) internal successors, (123), 27 states have internal predecessors, (123), 15 states have call successors, (25), 2 states have call predecessors, (25), 6 states have return successors, (24), 13 states have call predecessors, (24), 15 states have call successors, (24) [2021-12-06 17:16:00,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2346 transitions. [2021-12-06 17:16:00,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2021-12-06 17:16:00,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:00,881 INFO L514 BasicCegarLoop]: trace histogram [30, 29, 17, 17, 17, 17, 17, 17, 16, 16, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:00,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-12-06 17:16:01,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-12-06 17:16:01,082 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:16:01,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:01,082 INFO L85 PathProgramCache]: Analyzing trace with hash 881367507, now seen corresponding path program 10 times [2021-12-06 17:16:01,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:01,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587873729] [2021-12-06 17:16:01,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:01,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:01,099 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:01,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [694005870] [2021-12-06 17:16:01,099 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:16:01,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:01,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:01,101 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:01,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-12-06 17:16:01,200 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:16:01,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:01,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 17:16:01,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2627 backedges. 956 proven. 316 refuted. 0 times theorem prover too weak. 1355 trivial. 0 not checked. [2021-12-06 17:16:02,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:05,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2627 backedges. 956 proven. 346 refuted. 0 times theorem prover too weak. 1325 trivial. 0 not checked. [2021-12-06 17:16:05,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:05,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587873729] [2021-12-06 17:16:05,079 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:05,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694005870] [2021-12-06 17:16:05,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694005870] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:05,080 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:16:05,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 30 [2021-12-06 17:16:05,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780475386] [2021-12-06 17:16:05,080 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:05,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-06 17:16:05,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:05,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-06 17:16:05,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=765, Unknown=0, NotChecked=0, Total=870 [2021-12-06 17:16:05,081 INFO L87 Difference]: Start difference. First operand 1804 states and 2346 transitions. Second operand has 30 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 16 states have call successors, (22), 3 states have call predecessors, (22), 10 states have return successors, (25), 11 states have call predecessors, (25), 14 states have call successors, (25) [2021-12-06 17:16:08,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:08,082 INFO L93 Difference]: Finished difference Result 4374 states and 6150 transitions. [2021-12-06 17:16:08,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 17:16:08,084 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 16 states have call successors, (22), 3 states have call predecessors, (22), 10 states have return successors, (25), 11 states have call predecessors, (25), 14 states have call successors, (25) Word has length 317 [2021-12-06 17:16:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:08,090 INFO L225 Difference]: With dead ends: 4374 [2021-12-06 17:16:08,090 INFO L226 Difference]: Without dead ends: 2727 [2021-12-06 17:16:08,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 607 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=426, Invalid=1830, Unknown=0, NotChecked=0, Total=2256 [2021-12-06 17:16:08,096 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 403 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 313 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:08,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 621 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [313 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 17:16:08,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2727 states. [2021-12-06 17:16:08,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2727 to 2244. [2021-12-06 17:16:08,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2244 states, 1790 states have (on average 1.153072625698324) internal successors, (2064), 1754 states have internal predecessors, (2064), 311 states have call successors, (311), 98 states have call predecessors, (311), 136 states have return successors, (695), 391 states have call predecessors, (695), 311 states have call successors, (695) [2021-12-06 17:16:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2244 states to 2244 states and 3070 transitions. [2021-12-06 17:16:08,184 INFO L78 Accepts]: Start accepts. Automaton has 2244 states and 3070 transitions. Word has length 317 [2021-12-06 17:16:08,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:08,184 INFO L470 AbstractCegarLoop]: Abstraction has 2244 states and 3070 transitions. [2021-12-06 17:16:08,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 27 states have (on average 4.703703703703703) internal successors, (127), 28 states have internal predecessors, (127), 16 states have call successors, (22), 3 states have call predecessors, (22), 10 states have return successors, (25), 11 states have call predecessors, (25), 14 states have call successors, (25) [2021-12-06 17:16:08,184 INFO L276 IsEmpty]: Start isEmpty. Operand 2244 states and 3070 transitions. [2021-12-06 17:16:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-12-06 17:16:08,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:08,186 INFO L514 BasicCegarLoop]: trace histogram [29, 29, 17, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:08,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Ended with exit code 0 [2021-12-06 17:16:08,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:08,387 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:16:08,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:08,388 INFO L85 PathProgramCache]: Analyzing trace with hash -330811452, now seen corresponding path program 2 times [2021-12-06 17:16:08,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:08,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870678953] [2021-12-06 17:16:08,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:08,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:08,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:08,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1864605177] [2021-12-06 17:16:08,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:16:08,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:08,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:08,401 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:08,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-12-06 17:16:08,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 17:16:08,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:08,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:16:08,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2282 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 2245 trivial. 0 not checked. [2021-12-06 17:16:08,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:16:08,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:08,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870678953] [2021-12-06 17:16:08,749 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:08,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864605177] [2021-12-06 17:16:08,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864605177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:08,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:08,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:16:08,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467558449] [2021-12-06 17:16:08,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:08,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 17:16:08,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 17:16:08,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:16:08,750 INFO L87 Difference]: Start difference. First operand 2244 states and 3070 transitions. Second operand has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:16:08,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:08,902 INFO L93 Difference]: Finished difference Result 2246 states and 3070 transitions. [2021-12-06 17:16:08,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 17:16:08,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 318 [2021-12-06 17:16:08,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:08,911 INFO L225 Difference]: With dead ends: 2246 [2021-12-06 17:16:08,911 INFO L226 Difference]: Without dead ends: 2242 [2021-12-06 17:16:08,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:16:08,912 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 26 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:08,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 234 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:16:08,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2021-12-06 17:16:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2240. [2021-12-06 17:16:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2240 states, 1787 states have (on average 1.123111359820929) internal successors, (2007), 1751 states have internal predecessors, (2007), 311 states have call successors, (311), 98 states have call predecessors, (311), 136 states have return successors, (693), 390 states have call predecessors, (693), 311 states have call successors, (693) [2021-12-06 17:16:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2240 states to 2240 states and 3011 transitions. [2021-12-06 17:16:09,002 INFO L78 Accepts]: Start accepts. Automaton has 2240 states and 3011 transitions. Word has length 318 [2021-12-06 17:16:09,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:09,003 INFO L470 AbstractCegarLoop]: Abstraction has 2240 states and 3011 transitions. [2021-12-06 17:16:09,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 14.333333333333334) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 17:16:09,003 INFO L276 IsEmpty]: Start isEmpty. Operand 2240 states and 3011 transitions. [2021-12-06 17:16:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-12-06 17:16:09,005 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:09,005 INFO L514 BasicCegarLoop]: trace histogram [32, 32, 18, 14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:09,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2021-12-06 17:16:09,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable61 [2021-12-06 17:16:09,205 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:16:09,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash 319395959, now seen corresponding path program 3 times [2021-12-06 17:16:09,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:09,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546597998] [2021-12-06 17:16:09,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:09,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:09,213 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:09,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265589540] [2021-12-06 17:16:09,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:16:09,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:09,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:09,214 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:09,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-12-06 17:16:09,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-12-06 17:16:09,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:09,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 17:16:09,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2807 backedges. 278 proven. 60 refuted. 0 times theorem prover too weak. 2469 trivial. 0 not checked. [2021-12-06 17:16:10,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:14,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:14,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546597998] [2021-12-06 17:16:14,436 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:14,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265589540] [2021-12-06 17:16:14,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265589540] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:16:14,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:16:14,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-12-06 17:16:14,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181654206] [2021-12-06 17:16:14,437 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:14,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 17:16:14,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:14,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 17:16:14,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2021-12-06 17:16:14,438 INFO L87 Difference]: Start difference. First operand 2240 states and 3011 transitions. Second operand has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-06 17:16:16,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:16,164 INFO L93 Difference]: Finished difference Result 4054 states and 5492 transitions. [2021-12-06 17:16:16,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 17:16:16,164 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) Word has length 345 [2021-12-06 17:16:16,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:16,169 INFO L225 Difference]: With dead ends: 4054 [2021-12-06 17:16:16,169 INFO L226 Difference]: Without dead ends: 2179 [2021-12-06 17:16:16,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=118, Invalid=1004, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 17:16:16,172 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 86 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:16,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 784 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 17:16:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2179 states. [2021-12-06 17:16:16,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2179 to 2166. [2021-12-06 17:16:16,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2166 states, 1727 states have (on average 1.1204400694846555) internal successors, (1935), 1688 states have internal predecessors, (1935), 297 states have call successors, (297), 98 states have call predecessors, (297), 136 states have return successors, (659), 379 states have call predecessors, (659), 297 states have call successors, (659) [2021-12-06 17:16:16,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2166 states to 2166 states and 2891 transitions. [2021-12-06 17:16:16,243 INFO L78 Accepts]: Start accepts. Automaton has 2166 states and 2891 transitions. Word has length 345 [2021-12-06 17:16:16,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:16,243 INFO L470 AbstractCegarLoop]: Abstraction has 2166 states and 2891 transitions. [2021-12-06 17:16:16,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.6315789473684212) internal successors, (69), 19 states have internal predecessors, (69), 8 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 7 states have call successors, (12) [2021-12-06 17:16:16,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2166 states and 2891 transitions. [2021-12-06 17:16:16,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-12-06 17:16:16,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:16,245 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 20, 15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:16,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2021-12-06 17:16:16,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:16,446 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:16:16,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:16,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1683987768, now seen corresponding path program 4 times [2021-12-06 17:16:16,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:16,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696596610] [2021-12-06 17:16:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:16,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:16,472 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:16,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212393164] [2021-12-06 17:16:16,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:16:16,473 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:16,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:16,475 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:16,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-12-06 17:16:16,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:16:16,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:16,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:16:16,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:17,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 1189 proven. 101 refuted. 0 times theorem prover too weak. 2091 trivial. 0 not checked. [2021-12-06 17:16:17,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 373 proven. 149 refuted. 0 times theorem prover too weak. 2859 trivial. 0 not checked. [2021-12-06 17:16:17,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:17,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696596610] [2021-12-06 17:16:17,977 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:17,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212393164] [2021-12-06 17:16:17,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212393164] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:17,977 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:16:17,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-06 17:16:17,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989208464] [2021-12-06 17:16:17,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:17,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:16:17,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:16:17,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:16:17,979 INFO L87 Difference]: Start difference. First operand 2166 states and 2891 transitions. Second operand has 15 states, 13 states have (on average 7.923076923076923) internal successors, (103), 15 states have internal predecessors, (103), 10 states have call successors, (24), 2 states have call predecessors, (24), 6 states have return successors, (24), 8 states have call predecessors, (24), 10 states have call successors, (24) [2021-12-06 17:16:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:18,825 INFO L93 Difference]: Finished difference Result 4197 states and 5711 transitions. [2021-12-06 17:16:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:16:18,826 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.923076923076923) internal successors, (103), 15 states have internal predecessors, (103), 10 states have call successors, (24), 2 states have call predecessors, (24), 6 states have return successors, (24), 8 states have call predecessors, (24), 10 states have call successors, (24) Word has length 381 [2021-12-06 17:16:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:18,831 INFO L225 Difference]: With dead ends: 4197 [2021-12-06 17:16:18,831 INFO L226 Difference]: Without dead ends: 2218 [2021-12-06 17:16:18,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:16:18,835 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 139 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:18,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 537 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:16:18,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2218 states. [2021-12-06 17:16:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2218 to 2078. [2021-12-06 17:16:18,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2078 states, 1654 states have (on average 1.1215235792019347) internal successors, (1855), 1629 states have internal predecessors, (1855), 282 states have call successors, (282), 98 states have call predecessors, (282), 136 states have return successors, (618), 350 states have call predecessors, (618), 281 states have call successors, (618) [2021-12-06 17:16:18,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2078 states to 2078 states and 2755 transitions. [2021-12-06 17:16:18,905 INFO L78 Accepts]: Start accepts. Automaton has 2078 states and 2755 transitions. Word has length 381 [2021-12-06 17:16:18,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:18,905 INFO L470 AbstractCegarLoop]: Abstraction has 2078 states and 2755 transitions. [2021-12-06 17:16:18,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.923076923076923) internal successors, (103), 15 states have internal predecessors, (103), 10 states have call successors, (24), 2 states have call predecessors, (24), 6 states have return successors, (24), 8 states have call predecessors, (24), 10 states have call successors, (24) [2021-12-06 17:16:18,906 INFO L276 IsEmpty]: Start isEmpty. Operand 2078 states and 2755 transitions. [2021-12-06 17:16:18,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2021-12-06 17:16:18,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:18,908 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 20, 15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:18,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2021-12-06 17:16:19,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:19,109 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:16:19,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:19,110 INFO L85 PathProgramCache]: Analyzing trace with hash 262024440, now seen corresponding path program 5 times [2021-12-06 17:16:19,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:19,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209397958] [2021-12-06 17:16:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:19,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:19,147 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:19,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1236329823] [2021-12-06 17:16:19,147 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:16:19,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:19,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:19,148 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:19,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-12-06 17:16:19,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2021-12-06 17:16:19,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:19,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 17:16:19,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 1379 proven. 185 refuted. 0 times theorem prover too weak. 1817 trivial. 0 not checked. [2021-12-06 17:16:20,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3381 backedges. 727 proven. 299 refuted. 0 times theorem prover too weak. 2355 trivial. 0 not checked. [2021-12-06 17:16:22,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:22,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209397958] [2021-12-06 17:16:22,176 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:22,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236329823] [2021-12-06 17:16:22,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236329823] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:22,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:16:22,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 25 [2021-12-06 17:16:22,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629740580] [2021-12-06 17:16:22,176 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:22,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 17:16:22,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:22,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 17:16:22,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=529, Unknown=0, NotChecked=0, Total=600 [2021-12-06 17:16:22,177 INFO L87 Difference]: Start difference. First operand 2078 states and 2755 transitions. Second operand has 25 states, 23 states have (on average 5.478260869565218) internal successors, (126), 25 states have internal predecessors, (126), 15 states have call successors, (29), 2 states have call predecessors, (29), 7 states have return successors, (29), 14 states have call predecessors, (29), 15 states have call successors, (29) [2021-12-06 17:16:24,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:24,774 INFO L93 Difference]: Finished difference Result 4223 states and 5736 transitions. [2021-12-06 17:16:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-06 17:16:24,776 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.478260869565218) internal successors, (126), 25 states have internal predecessors, (126), 15 states have call successors, (29), 2 states have call predecessors, (29), 7 states have return successors, (29), 14 states have call predecessors, (29), 15 states have call successors, (29) Word has length 381 [2021-12-06 17:16:24,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:24,780 INFO L225 Difference]: With dead ends: 4223 [2021-12-06 17:16:24,781 INFO L226 Difference]: Without dead ends: 2438 [2021-12-06 17:16:24,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 790 GetRequests, 746 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=317, Invalid=1753, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 17:16:24,784 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 326 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 1094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:24,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 548 Invalid, 1094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 17:16:24,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2438 states. [2021-12-06 17:16:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2438 to 2116. [2021-12-06 17:16:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2116 states, 1682 states have (on average 1.1206896551724137) internal successors, (1885), 1659 states have internal predecessors, (1885), 290 states have call successors, (290), 98 states have call predecessors, (290), 138 states have return successors, (626), 358 states have call predecessors, (626), 289 states have call successors, (626) [2021-12-06 17:16:24,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2116 states to 2116 states and 2801 transitions. [2021-12-06 17:16:24,857 INFO L78 Accepts]: Start accepts. Automaton has 2116 states and 2801 transitions. Word has length 381 [2021-12-06 17:16:24,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:24,857 INFO L470 AbstractCegarLoop]: Abstraction has 2116 states and 2801 transitions. [2021-12-06 17:16:24,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.478260869565218) internal successors, (126), 25 states have internal predecessors, (126), 15 states have call successors, (29), 2 states have call predecessors, (29), 7 states have return successors, (29), 14 states have call predecessors, (29), 15 states have call successors, (29) [2021-12-06 17:16:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2116 states and 2801 transitions. [2021-12-06 17:16:24,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 553 [2021-12-06 17:16:24,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:24,861 INFO L514 BasicCegarLoop]: trace histogram [52, 52, 31, 31, 31, 31, 31, 31, 31, 31, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:24,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2021-12-06 17:16:25,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:25,062 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:16:25,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:25,062 INFO L85 PathProgramCache]: Analyzing trace with hash -712413816, now seen corresponding path program 3 times [2021-12-06 17:16:25,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:25,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868761633] [2021-12-06 17:16:25,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:25,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:25,073 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:25,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926573541] [2021-12-06 17:16:25,074 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:16:25,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:25,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:25,075 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:25,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-12-06 17:16:25,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-06 17:16:25,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:25,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 17:16:25,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8538 backedges. 1164 proven. 38 refuted. 0 times theorem prover too weak. 7336 trivial. 0 not checked. [2021-12-06 17:16:26,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:28,767 INFO L134 CoverageAnalysis]: Checked inductivity of 8538 backedges. 1164 proven. 53 refuted. 0 times theorem prover too weak. 7321 trivial. 0 not checked. [2021-12-06 17:16:28,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:28,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868761633] [2021-12-06 17:16:28,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:28,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926573541] [2021-12-06 17:16:28,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926573541] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:28,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:16:28,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 20 [2021-12-06 17:16:28,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237720482] [2021-12-06 17:16:28,768 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:28,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 17:16:28,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:28,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 17:16:28,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:16:28,769 INFO L87 Difference]: Start difference. First operand 2116 states and 2801 transitions. Second operand has 21 states, 20 states have (on average 5.15) internal successors, (103), 21 states have internal predecessors, (103), 9 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (22), 12 states have call predecessors, (22), 9 states have call successors, (22) [2021-12-06 17:16:30,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:30,526 INFO L93 Difference]: Finished difference Result 2872 states and 4121 transitions. [2021-12-06 17:16:30,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 17:16:30,528 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.15) internal successors, (103), 21 states have internal predecessors, (103), 9 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (22), 12 states have call predecessors, (22), 9 states have call successors, (22) Word has length 552 [2021-12-06 17:16:30,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:30,533 INFO L225 Difference]: With dead ends: 2872 [2021-12-06 17:16:30,533 INFO L226 Difference]: Without dead ends: 2871 [2021-12-06 17:16:30,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1122 GetRequests, 1085 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=220, Invalid=1262, Unknown=0, NotChecked=0, Total=1482 [2021-12-06 17:16:30,535 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 157 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:30,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 358 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:16:30,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2021-12-06 17:16:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2537. [2021-12-06 17:16:30,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2029 states have (on average 1.1246919664859536) internal successors, (2282), 2008 states have internal predecessors, (2282), 345 states have call successors, (345), 103 states have call predecessors, (345), 157 states have return successors, (936), 425 states have call predecessors, (936), 344 states have call successors, (936) [2021-12-06 17:16:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3563 transitions. [2021-12-06 17:16:30,633 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3563 transitions. Word has length 552 [2021-12-06 17:16:30,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:30,633 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 3563 transitions. [2021-12-06 17:16:30,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.15) internal successors, (103), 21 states have internal predecessors, (103), 9 states have call successors, (18), 1 states have call predecessors, (18), 7 states have return successors, (22), 12 states have call predecessors, (22), 9 states have call successors, (22) [2021-12-06 17:16:30,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3563 transitions. [2021-12-06 17:16:30,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 593 [2021-12-06 17:16:30,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:30,637 INFO L514 BasicCegarLoop]: trace histogram [56, 56, 35, 35, 35, 35, 35, 35, 35, 35, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:30,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2021-12-06 17:16:30,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-12-06 17:16:30,838 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:16:30,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash 140526600, now seen corresponding path program 4 times [2021-12-06 17:16:30,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:30,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570242739] [2021-12-06 17:16:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:30,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:30,875 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:30,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [498488667] [2021-12-06 17:16:30,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:16:30,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:30,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:30,885 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:30,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-12-06 17:16:30,967 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:16:30,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:30,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-06 17:16:30,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:32,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10174 backedges. 5774 proven. 184 refuted. 0 times theorem prover too weak. 4216 trivial. 0 not checked. [2021-12-06 17:16:32,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:36,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10174 backedges. 778 proven. 1924 refuted. 0 times theorem prover too weak. 7472 trivial. 0 not checked. [2021-12-06 17:16:36,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:36,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570242739] [2021-12-06 17:16:36,341 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:36,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498488667] [2021-12-06 17:16:36,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498488667] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:36,341 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:16:36,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23] total 27 [2021-12-06 17:16:36,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911376061] [2021-12-06 17:16:36,342 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:36,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 17:16:36,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 17:16:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2021-12-06 17:16:36,343 INFO L87 Difference]: Start difference. First operand 2537 states and 3563 transitions. Second operand has 27 states, 25 states have (on average 5.84) internal successors, (146), 27 states have internal predecessors, (146), 16 states have call successors, (27), 2 states have call predecessors, (27), 11 states have return successors, (32), 13 states have call predecessors, (32), 16 states have call successors, (32) [2021-12-06 17:16:37,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:37,985 INFO L93 Difference]: Finished difference Result 5197 states and 7476 transitions. [2021-12-06 17:16:37,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:16:37,987 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.84) internal successors, (146), 27 states have internal predecessors, (146), 16 states have call successors, (27), 2 states have call predecessors, (27), 11 states have return successors, (32), 13 states have call predecessors, (32), 16 states have call successors, (32) Word has length 592 [2021-12-06 17:16:37,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:37,994 INFO L225 Difference]: With dead ends: 5197 [2021-12-06 17:16:37,994 INFO L226 Difference]: Without dead ends: 2767 [2021-12-06 17:16:37,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1195 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 17:16:38,000 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 164 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:38,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 562 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 17:16:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2767 states. [2021-12-06 17:16:38,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2767 to 2546. [2021-12-06 17:16:38,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2032 states have (on average 1.124507874015748) internal successors, (2285), 2011 states have internal predecessors, (2285), 351 states have call successors, (351), 102 states have call predecessors, (351), 157 states have return successors, (954), 432 states have call predecessors, (954), 350 states have call successors, (954) [2021-12-06 17:16:38,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 3590 transitions. [2021-12-06 17:16:38,104 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 3590 transitions. Word has length 592 [2021-12-06 17:16:38,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:38,104 INFO L470 AbstractCegarLoop]: Abstraction has 2546 states and 3590 transitions. [2021-12-06 17:16:38,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.84) internal successors, (146), 27 states have internal predecessors, (146), 16 states have call successors, (27), 2 states have call predecessors, (27), 11 states have return successors, (32), 13 states have call predecessors, (32), 16 states have call successors, (32) [2021-12-06 17:16:38,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 3590 transitions. [2021-12-06 17:16:38,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2021-12-06 17:16:38,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:38,107 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 20, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:38,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-12-06 17:16:38,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:38,308 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:16:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:38,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1636517224, now seen corresponding path program 6 times [2021-12-06 17:16:38,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:38,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432344501] [2021-12-06 17:16:38,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:38,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:38,339 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:38,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18927559] [2021-12-06 17:16:38,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 17:16:38,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:38,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:38,342 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:38,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-12-06 17:16:38,410 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-12-06 17:16:38,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:38,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:16:38,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3611 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 3404 trivial. 0 not checked. [2021-12-06 17:16:38,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:16:38,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:38,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432344501] [2021-12-06 17:16:38,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:38,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18927559] [2021-12-06 17:16:38,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [18927559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:16:38,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:16:38,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 17:16:38,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774433997] [2021-12-06 17:16:38,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:16:38,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:16:38,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:38,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:16:38,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:16:38,769 INFO L87 Difference]: Start difference. First operand 2546 states and 3590 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 17:16:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:39,291 INFO L93 Difference]: Finished difference Result 4553 states and 6581 transitions. [2021-12-06 17:16:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:16:39,293 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) Word has length 391 [2021-12-06 17:16:39,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:39,301 INFO L225 Difference]: With dead ends: 4553 [2021-12-06 17:16:39,302 INFO L226 Difference]: Without dead ends: 2476 [2021-12-06 17:16:39,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:16:39,306 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 44 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:39,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 374 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 17:16:39,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-12-06 17:16:39,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2470. [2021-12-06 17:16:39,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 1968 states have (on average 1.1244918699186992) internal successors, (2213), 1961 states have internal predecessors, (2213), 340 states have call successors, (340), 102 states have call predecessors, (340), 156 states have return successors, (918), 406 states have call predecessors, (918), 340 states have call successors, (918) [2021-12-06 17:16:39,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3471 transitions. [2021-12-06 17:16:39,392 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3471 transitions. Word has length 391 [2021-12-06 17:16:39,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:39,392 INFO L470 AbstractCegarLoop]: Abstraction has 2470 states and 3471 transitions. [2021-12-06 17:16:39,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 17:16:39,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3471 transitions. [2021-12-06 17:16:39,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2021-12-06 17:16:39,395 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:39,395 INFO L514 BasicCegarLoop]: trace histogram [40, 39, 24, 24, 24, 24, 24, 24, 23, 23, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:39,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-12-06 17:16:39,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2021-12-06 17:16:39,597 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:16:39,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:39,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1765578227, now seen corresponding path program 11 times [2021-12-06 17:16:39,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:39,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096353974] [2021-12-06 17:16:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:39,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:39,625 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:39,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [445753975] [2021-12-06 17:16:39,625 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:16:39,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:39,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:39,626 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:39,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-12-06 17:16:39,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-12-06 17:16:39,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:39,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 17:16:39,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:16:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4911 backedges. 2162 proven. 324 refuted. 0 times theorem prover too weak. 2425 trivial. 0 not checked. [2021-12-06 17:16:41,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:16:44,948 INFO L134 CoverageAnalysis]: Checked inductivity of 4911 backedges. 1034 proven. 572 refuted. 0 times theorem prover too weak. 3305 trivial. 0 not checked. [2021-12-06 17:16:44,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:16:44,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096353974] [2021-12-06 17:16:44,948 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:16:44,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445753975] [2021-12-06 17:16:44,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445753975] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:16:44,948 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:16:44,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 23] total 27 [2021-12-06 17:16:44,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510140057] [2021-12-06 17:16:44,949 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:16:44,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 17:16:44,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:16:44,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 17:16:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2021-12-06 17:16:44,950 INFO L87 Difference]: Start difference. First operand 2470 states and 3471 transitions. Second operand has 27 states, 27 states have (on average 5.444444444444445) internal successors, (147), 27 states have internal predecessors, (147), 15 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (32), 15 states have call predecessors, (32), 15 states have call successors, (32) [2021-12-06 17:16:47,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:16:47,579 INFO L93 Difference]: Finished difference Result 5248 states and 7590 transitions. [2021-12-06 17:16:47,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 17:16:47,581 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.444444444444445) internal successors, (147), 27 states have internal predecessors, (147), 15 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (32), 15 states have call predecessors, (32), 15 states have call successors, (32) Word has length 421 [2021-12-06 17:16:47,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:16:47,588 INFO L225 Difference]: With dead ends: 5248 [2021-12-06 17:16:47,588 INFO L226 Difference]: Without dead ends: 2902 [2021-12-06 17:16:47,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 822 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=239, Invalid=1401, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 17:16:47,594 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 215 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:16:47,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 721 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 17:16:47,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2902 states. [2021-12-06 17:16:47,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2902 to 2509. [2021-12-06 17:16:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2509 states, 1993 states have (on average 1.1289513296537883) internal successors, (2250), 1978 states have internal predecessors, (2250), 359 states have call successors, (359), 110 states have call predecessors, (359), 151 states have return successors, (918), 420 states have call predecessors, (918), 359 states have call successors, (918) [2021-12-06 17:16:47,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3527 transitions. [2021-12-06 17:16:47,687 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3527 transitions. Word has length 421 [2021-12-06 17:16:47,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:16:47,687 INFO L470 AbstractCegarLoop]: Abstraction has 2509 states and 3527 transitions. [2021-12-06 17:16:47,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.444444444444445) internal successors, (147), 27 states have internal predecessors, (147), 15 states have call successors, (31), 2 states have call predecessors, (31), 10 states have return successors, (32), 15 states have call predecessors, (32), 15 states have call successors, (32) [2021-12-06 17:16:47,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3527 transitions. [2021-12-06 17:16:47,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-12-06 17:16:47,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:16:47,690 INFO L514 BasicCegarLoop]: trace histogram [41, 40, 25, 25, 25, 25, 25, 25, 24, 24, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:16:47,710 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Ended with exit code 0 [2021-12-06 17:16:47,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2021-12-06 17:16:47,892 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:16:47,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:16:47,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1270244179, now seen corresponding path program 12 times [2021-12-06 17:16:47,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:16:47,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409843297] [2021-12-06 17:16:47,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:16:47,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:16:47,924 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:16:47,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903002634] [2021-12-06 17:16:47,925 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 17:16:47,925 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:16:47,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:16:47,927 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:16:47,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2021-12-06 17:16:48,157 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2021-12-06 17:16:48,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:16:48,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-06 17:16:48,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:17:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5212 backedges. 1106 proven. 153 refuted. 0 times theorem prover too weak. 3953 trivial. 0 not checked. [2021-12-06 17:17:00,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:17:04,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:04,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409843297] [2021-12-06 17:17:04,762 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:17:04,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903002634] [2021-12-06 17:17:04,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903002634] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:17:04,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:17:04,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2021-12-06 17:17:04,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244233240] [2021-12-06 17:17:04,763 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:17:04,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-06 17:17:04,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:04,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-06 17:17:04,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=978, Unknown=4, NotChecked=0, Total=1122 [2021-12-06 17:17:04,764 INFO L87 Difference]: Start difference. First operand 2509 states and 3527 transitions. Second operand has 32 states, 30 states have (on average 3.1) internal successors, (93), 30 states have internal predecessors, (93), 12 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 17:17:20,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:20,683 INFO L93 Difference]: Finished difference Result 2913 states and 4244 transitions. [2021-12-06 17:17:20,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 17:17:20,684 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 3.1) internal successors, (93), 30 states have internal predecessors, (93), 12 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) Word has length 431 [2021-12-06 17:17:20,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:20,690 INFO L225 Difference]: With dead ends: 2913 [2021-12-06 17:17:20,690 INFO L226 Difference]: Without dead ends: 2912 [2021-12-06 17:17:20,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 454 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=312, Invalid=1936, Unknown=8, NotChecked=0, Total=2256 [2021-12-06 17:17:20,691 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 177 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 202 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:20,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [198 Valid, 863 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 572 Invalid, 0 Unknown, 202 Unchecked, 0.9s Time] [2021-12-06 17:17:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2021-12-06 17:17:20,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2579. [2021-12-06 17:17:20,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2579 states, 2043 states have (on average 1.1297112090063632) internal successors, (2308), 2028 states have internal predecessors, (2308), 378 states have call successors, (378), 124 states have call predecessors, (378), 152 states have return successors, (982), 426 states have call predecessors, (982), 378 states have call successors, (982) [2021-12-06 17:17:20,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2579 states to 2579 states and 3668 transitions. [2021-12-06 17:17:20,791 INFO L78 Accepts]: Start accepts. Automaton has 2579 states and 3668 transitions. Word has length 431 [2021-12-06 17:17:20,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:20,791 INFO L470 AbstractCegarLoop]: Abstraction has 2579 states and 3668 transitions. [2021-12-06 17:17:20,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 3.1) internal successors, (93), 30 states have internal predecessors, (93), 12 states have call successors, (15), 3 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 10 states have call successors, (14) [2021-12-06 17:17:20,791 INFO L276 IsEmpty]: Start isEmpty. Operand 2579 states and 3668 transitions. [2021-12-06 17:17:20,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-12-06 17:17:20,793 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:20,794 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 20, 17, 17, 17, 17, 17, 17, 17, 17, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:20,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2021-12-06 17:17:20,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2021-12-06 17:17:20,995 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:17:20,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:20,996 INFO L85 PathProgramCache]: Analyzing trace with hash 282474616, now seen corresponding path program 7 times [2021-12-06 17:17:20,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:20,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766727871] [2021-12-06 17:17:20,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:20,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:21,026 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:17:21,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1399580508] [2021-12-06 17:17:21,027 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 17:17:21,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:17:21,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:17:21,029 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:17:21,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2021-12-06 17:17:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:21,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 17:17:21,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:17:21,746 INFO L134 CoverageAnalysis]: Checked inductivity of 3851 backedges. 958 proven. 80 refuted. 0 times theorem prover too weak. 2813 trivial. 0 not checked. [2021-12-06 17:17:21,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:17:22,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3851 backedges. 66 proven. 80 refuted. 0 times theorem prover too weak. 3705 trivial. 0 not checked. [2021-12-06 17:17:22,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:22,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766727871] [2021-12-06 17:17:22,682 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:17:22,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399580508] [2021-12-06 17:17:22,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399580508] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:17:22,682 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:17:22,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2021-12-06 17:17:22,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928977537] [2021-12-06 17:17:22,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:17:22,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 17:17:22,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:22,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 17:17:22,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:17:22,684 INFO L87 Difference]: Start difference. First operand 2579 states and 3668 transitions. Second operand has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 11 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2021-12-06 17:17:24,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:24,542 INFO L93 Difference]: Finished difference Result 4963 states and 7153 transitions. [2021-12-06 17:17:24,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 17:17:24,544 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 11 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) Word has length 401 [2021-12-06 17:17:24,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:24,549 INFO L225 Difference]: With dead ends: 4963 [2021-12-06 17:17:24,550 INFO L226 Difference]: Without dead ends: 2761 [2021-12-06 17:17:24,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 819 GetRequests, 778 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=349, Invalid=1457, Unknown=0, NotChecked=0, Total=1806 [2021-12-06 17:17:24,554 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 160 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:24,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 847 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:17:24,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2021-12-06 17:17:24,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 2693. [2021-12-06 17:17:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2693 states, 2139 states have (on average 1.1318373071528751) internal successors, (2421), 2128 states have internal predecessors, (2421), 396 states have call successors, (396), 124 states have call predecessors, (396), 152 states have return successors, (1019), 440 states have call predecessors, (1019), 396 states have call successors, (1019) [2021-12-06 17:17:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2693 states to 2693 states and 3836 transitions. [2021-12-06 17:17:24,646 INFO L78 Accepts]: Start accepts. Automaton has 2693 states and 3836 transitions. Word has length 401 [2021-12-06 17:17:24,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:24,647 INFO L470 AbstractCegarLoop]: Abstraction has 2693 states and 3836 transitions. [2021-12-06 17:17:24,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.208333333333333) internal successors, (101), 24 states have internal predecessors, (101), 11 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 11 states have call predecessors, (18), 11 states have call successors, (18) [2021-12-06 17:17:24,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2693 states and 3836 transitions. [2021-12-06 17:17:24,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 496 [2021-12-06 17:17:24,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:24,650 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 23, 23, 23, 23, 23, 23, 23, 23, 23, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:24,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2021-12-06 17:17:24,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:17:24,851 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:17:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash 294405266, now seen corresponding path program 8 times [2021-12-06 17:17:24,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:24,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353626582] [2021-12-06 17:17:24,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:24,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:24,889 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:17:24,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012698329] [2021-12-06 17:17:24,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:17:24,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:17:24,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:17:24,892 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:17:24,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2021-12-06 17:17:25,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:17:25,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:17:25,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 17:17:25,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:17:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6165 backedges. 45 proven. 127 refuted. 0 times theorem prover too weak. 5993 trivial. 0 not checked. [2021-12-06 17:17:25,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:17:27,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6165 backedges. 44 proven. 126 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked. [2021-12-06 17:17:27,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:27,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353626582] [2021-12-06 17:17:27,503 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:17:27,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012698329] [2021-12-06 17:17:27,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012698329] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:17:27,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:17:27,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2021-12-06 17:17:27,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266016582] [2021-12-06 17:17:27,504 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:17:27,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-06 17:17:27,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:27,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-06 17:17:27,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=879, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 17:17:27,505 INFO L87 Difference]: Start difference. First operand 2693 states and 3836 transitions. Second operand has 33 states, 32 states have (on average 3.5) internal successors, (112), 31 states have internal predecessors, (112), 14 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2021-12-06 17:17:31,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:31,912 INFO L93 Difference]: Finished difference Result 6385 states and 9394 transitions. [2021-12-06 17:17:31,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-06 17:17:31,912 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.5) internal successors, (112), 31 states have internal predecessors, (112), 14 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) Word has length 495 [2021-12-06 17:17:31,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:31,921 INFO L225 Difference]: With dead ends: 6385 [2021-12-06 17:17:31,921 INFO L226 Difference]: Without dead ends: 4132 [2021-12-06 17:17:31,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 959 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1865 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=1241, Invalid=4921, Unknown=0, NotChecked=0, Total=6162 [2021-12-06 17:17:31,927 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 409 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:31,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 999 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 17:17:31,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4132 states. [2021-12-06 17:17:32,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4132 to 3873. [2021-12-06 17:17:32,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3873 states, 3082 states have (on average 1.1327060350421805) internal successors, (3491), 3076 states have internal predecessors, (3491), 594 states have call successors, (594), 158 states have call predecessors, (594), 192 states have return successors, (1515), 638 states have call predecessors, (1515), 594 states have call successors, (1515) [2021-12-06 17:17:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3873 states to 3873 states and 5600 transitions. [2021-12-06 17:17:32,083 INFO L78 Accepts]: Start accepts. Automaton has 3873 states and 5600 transitions. Word has length 495 [2021-12-06 17:17:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:32,084 INFO L470 AbstractCegarLoop]: Abstraction has 3873 states and 5600 transitions. [2021-12-06 17:17:32,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.5) internal successors, (112), 31 states have internal predecessors, (112), 14 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (20), 13 states have call predecessors, (20), 13 states have call successors, (20) [2021-12-06 17:17:32,084 INFO L276 IsEmpty]: Start isEmpty. Operand 3873 states and 5600 transitions. [2021-12-06 17:17:32,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2021-12-06 17:17:32,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:32,087 INFO L514 BasicCegarLoop]: trace histogram [42, 41, 26, 26, 26, 26, 26, 26, 25, 25, 16, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:17:32,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2021-12-06 17:17:32,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:17:32,288 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:17:32,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:32,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1275797683, now seen corresponding path program 13 times [2021-12-06 17:17:32,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:32,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224771292] [2021-12-06 17:17:32,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:32,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:32,314 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:17:32,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413561153] [2021-12-06 17:17:32,314 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 17:17:32,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:17:32,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:17:32,315 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:17:32,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2021-12-06 17:17:32,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:17:32,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 871 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-06 17:17:32,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:17:33,291 INFO L134 CoverageAnalysis]: Checked inductivity of 5523 backedges. 1375 proven. 120 refuted. 0 times theorem prover too weak. 4028 trivial. 0 not checked. [2021-12-06 17:17:33,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:17:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 5523 backedges. 1375 proven. 148 refuted. 0 times theorem prover too weak. 4000 trivial. 0 not checked. [2021-12-06 17:17:35,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:35,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224771292] [2021-12-06 17:17:35,780 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:17:35,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413561153] [2021-12-06 17:17:35,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413561153] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:17:35,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:17:35,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 27] total 28 [2021-12-06 17:17:35,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146952929] [2021-12-06 17:17:35,781 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:17:35,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-06 17:17:35,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:35,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-06 17:17:35,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2021-12-06 17:17:35,782 INFO L87 Difference]: Start difference. First operand 3873 states and 5600 transitions. Second operand has 28 states, 27 states have (on average 4.037037037037037) internal successors, (109), 26 states have internal predecessors, (109), 15 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2021-12-06 17:17:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:38,873 INFO L93 Difference]: Finished difference Result 8727 states and 12867 transitions. [2021-12-06 17:17:38,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 17:17:38,875 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.037037037037037) internal successors, (109), 26 states have internal predecessors, (109), 15 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) Word has length 441 [2021-12-06 17:17:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:38,885 INFO L225 Difference]: With dead ends: 8727 [2021-12-06 17:17:38,885 INFO L226 Difference]: Without dead ends: 5139 [2021-12-06 17:17:38,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 900 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=352, Invalid=1718, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 17:17:38,896 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 118 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1214 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:38,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1214 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-06 17:17:38,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5139 states. [2021-12-06 17:17:39,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5139 to 4778. [2021-12-06 17:17:39,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4778 states, 3787 states have (on average 1.1272775283865857) internal successors, (4269), 3778 states have internal predecessors, (4269), 723 states have call successors, (723), 176 states have call predecessors, (723), 263 states have return successors, (1786), 823 states have call predecessors, (1786), 723 states have call successors, (1786) [2021-12-06 17:17:39,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4778 states to 4778 states and 6778 transitions. [2021-12-06 17:17:39,144 INFO L78 Accepts]: Start accepts. Automaton has 4778 states and 6778 transitions. Word has length 441 [2021-12-06 17:17:39,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:39,144 INFO L470 AbstractCegarLoop]: Abstraction has 4778 states and 6778 transitions. [2021-12-06 17:17:39,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.037037037037037) internal successors, (109), 26 states have internal predecessors, (109), 15 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (19), 12 states have call predecessors, (19), 13 states have call successors, (19) [2021-12-06 17:17:39,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4778 states and 6778 transitions. [2021-12-06 17:17:39,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2021-12-06 17:17:39,147 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:39,147 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 25, 25, 25, 25, 25, 25, 24, 24, 22, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-12-06 17:17:39,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2021-12-06 17:17:39,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:17:39,349 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:17:39,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:39,350 INFO L85 PathProgramCache]: Analyzing trace with hash 48669219, now seen corresponding path program 8 times [2021-12-06 17:17:39,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:39,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71874608] [2021-12-06 17:17:39,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:39,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:39,384 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:17:39,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107584578] [2021-12-06 17:17:39,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:17:39,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:17:39,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:17:39,386 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:17:39,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2021-12-06 17:17:39,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:17:39,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:17:39,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 17:17:39,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:17:40,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6500 backedges. 1559 proven. 100 refuted. 0 times theorem prover too weak. 4841 trivial. 0 not checked. [2021-12-06 17:17:40,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:17:41,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6500 backedges. 249 proven. 140 refuted. 0 times theorem prover too weak. 6111 trivial. 0 not checked. [2021-12-06 17:17:41,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:17:41,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71874608] [2021-12-06 17:17:41,148 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:17:41,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107584578] [2021-12-06 17:17:41,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107584578] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:17:41,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:17:41,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2021-12-06 17:17:41,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100374965] [2021-12-06 17:17:41,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:17:41,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 17:17:41,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:17:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 17:17:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-12-06 17:17:41,150 INFO L87 Difference]: Start difference. First operand 4778 states and 6778 transitions. Second operand has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 12 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2021-12-06 17:17:42,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:17:42,967 INFO L93 Difference]: Finished difference Result 5661 states and 7952 transitions. [2021-12-06 17:17:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 17:17:42,970 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 12 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) Word has length 509 [2021-12-06 17:17:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:17:42,978 INFO L225 Difference]: With dead ends: 5661 [2021-12-06 17:17:42,979 INFO L226 Difference]: Without dead ends: 4663 [2021-12-06 17:17:42,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1033 GetRequests, 994 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=322, Invalid=1318, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 17:17:42,982 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 88 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:17:42,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 870 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:17:42,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4663 states. [2021-12-06 17:17:43,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4663 to 4654. [2021-12-06 17:17:43,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4654 states, 3679 states have (on average 1.1144332699103017) internal successors, (4100), 3670 states have internal predecessors, (4100), 707 states have call successors, (707), 176 states have call predecessors, (707), 263 states have return successors, (1752), 807 states have call predecessors, (1752), 707 states have call successors, (1752) [2021-12-06 17:17:43,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 6559 transitions. [2021-12-06 17:17:43,182 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 6559 transitions. Word has length 509 [2021-12-06 17:17:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:17:43,182 INFO L470 AbstractCegarLoop]: Abstraction has 4654 states and 6559 transitions. [2021-12-06 17:17:43,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 4.583333333333333) internal successors, (110), 24 states have internal predecessors, (110), 12 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 12 states have call predecessors, (16), 12 states have call successors, (16) [2021-12-06 17:17:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 6559 transitions. [2021-12-06 17:17:43,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2021-12-06 17:17:43,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:17:43,187 INFO L514 BasicCegarLoop]: trace histogram [40, 37, 21, 21, 21, 21, 19, 19, 19, 18, 18, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-12-06 17:17:43,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2021-12-06 17:17:43,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:17:43,388 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:17:43,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:17:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1135251049, now seen corresponding path program 9 times [2021-12-06 17:17:43,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:17:43,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975485294] [2021-12-06 17:17:43,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:17:43,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:17:43,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:17:43,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724552891] [2021-12-06 17:17:43,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:17:43,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:17:43,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:17:43,429 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:17:43,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2021-12-06 17:17:43,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 17:17:43,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:17:43,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 17:17:43,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:18:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 4377 backedges. 946 proven. 60 refuted. 2 times theorem prover too weak. 3369 trivial. 0 not checked. [2021-12-06 17:18:26,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:18:31,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:18:31,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975485294] [2021-12-06 17:18:31,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:18:31,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724552891] [2021-12-06 17:18:31,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724552891] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:18:31,639 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:18:31,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-12-06 17:18:31,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40985697] [2021-12-06 17:18:31,640 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:18:31,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 17:18:31,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:18:31,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 17:18:31,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=275, Unknown=15, NotChecked=0, Total=380 [2021-12-06 17:18:31,641 INFO L87 Difference]: Start difference. First operand 4654 states and 6559 transitions. Second operand has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 18 states have internal predecessors, (71), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-06 17:18:41,932 WARN L227 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 46 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:18:53,970 WARN L227 SmtUtils]: Spent 6.32s on a formula simplification. DAG size of input: 48 DAG size of output: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:18:59,720 WARN L227 SmtUtils]: Spent 5.48s on a formula simplification. DAG size of input: 51 DAG size of output: 35 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:19:30,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:19:30,872 INFO L93 Difference]: Finished difference Result 4872 states and 7504 transitions. [2021-12-06 17:19:30,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 17:19:30,874 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 18 states have internal predecessors, (71), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 425 [2021-12-06 17:19:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:19:30,885 INFO L225 Difference]: With dead ends: 4872 [2021-12-06 17:19:30,885 INFO L226 Difference]: Without dead ends: 4871 [2021-12-06 17:19:30,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 412 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 100.4s TimeCoverageRelationStatistics Valid=178, Invalid=551, Unknown=27, NotChecked=0, Total=756 [2021-12-06 17:19:30,888 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 40 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 120 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:19:30,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 358 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 91 Invalid, 0 Unknown, 120 Unchecked, 0.3s Time] [2021-12-06 17:19:30,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-12-06 17:19:31,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4685. [2021-12-06 17:19:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 3705 states have (on average 1.1136302294197031) internal successors, (4126), 3693 states have internal predecessors, (4126), 707 states have call successors, (707), 176 states have call predecessors, (707), 268 states have return successors, (1766), 815 states have call predecessors, (1766), 707 states have call successors, (1766) [2021-12-06 17:19:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 6599 transitions. [2021-12-06 17:19:31,070 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 6599 transitions. Word has length 425 [2021-12-06 17:19:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:19:31,070 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 6599 transitions. [2021-12-06 17:19:31,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 18 states have internal predecessors, (71), 5 states have call successors, (10), 1 states have call predecessors, (10), 6 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2021-12-06 17:19:31,070 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 6599 transitions. [2021-12-06 17:19:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2021-12-06 17:19:31,073 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:19:31,073 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 21, 15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-12-06 17:19:31,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Forceful destruction successful, exit code 0 [2021-12-06 17:19:31,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable74 [2021-12-06 17:19:31,274 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:19:31,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:19:31,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1423801675, now seen corresponding path program 1 times [2021-12-06 17:19:31,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:19:31,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685190244] [2021-12-06 17:19:31,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:31,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:19:31,306 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:19:31,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2066749798] [2021-12-06 17:19:31,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:31,308 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:19:31,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:19:31,309 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:19:31,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2021-12-06 17:19:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:19:31,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:19:31,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:19:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 3622 backedges. 297 proven. 9 refuted. 0 times theorem prover too weak. 3316 trivial. 0 not checked. [2021-12-06 17:19:32,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:19:33,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3622 backedges. 297 proven. 9 refuted. 0 times theorem prover too weak. 3316 trivial. 0 not checked. [2021-12-06 17:19:33,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:19:33,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685190244] [2021-12-06 17:19:33,354 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:19:33,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066749798] [2021-12-06 17:19:33,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066749798] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:19:33,354 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:19:33,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-12-06 17:19:33,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846455700] [2021-12-06 17:19:33,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:19:33,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 17:19:33,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:19:33,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 17:19:33,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:19:33,356 INFO L87 Difference]: Start difference. First operand 4685 states and 6599 transitions. Second operand has 15 states, 13 states have (on average 7.0) internal successors, (91), 15 states have internal predecessors, (91), 8 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-06 17:19:34,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:19:34,550 INFO L93 Difference]: Finished difference Result 7796 states and 11093 transitions. [2021-12-06 17:19:34,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:19:34,552 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.0) internal successors, (91), 15 states have internal predecessors, (91), 8 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) Word has length 406 [2021-12-06 17:19:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:19:34,560 INFO L225 Difference]: With dead ends: 7796 [2021-12-06 17:19:34,561 INFO L226 Difference]: Without dead ends: 3590 [2021-12-06 17:19:34,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 816 GetRequests, 796 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:19:34,570 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 86 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 17:19:34,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 359 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 17:19:34,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2021-12-06 17:19:34,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3564. [2021-12-06 17:19:34,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3564 states, 2826 states have (on average 1.1089879688605804) internal successors, (3134), 2815 states have internal predecessors, (3134), 527 states have call successors, (527), 137 states have call predecessors, (527), 206 states have return successors, (1301), 611 states have call predecessors, (1301), 527 states have call successors, (1301) [2021-12-06 17:19:34,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3564 states to 3564 states and 4962 transitions. [2021-12-06 17:19:34,719 INFO L78 Accepts]: Start accepts. Automaton has 3564 states and 4962 transitions. Word has length 406 [2021-12-06 17:19:34,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:19:34,719 INFO L470 AbstractCegarLoop]: Abstraction has 3564 states and 4962 transitions. [2021-12-06 17:19:34,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.0) internal successors, (91), 15 states have internal predecessors, (91), 8 states have call successors, (15), 1 states have call predecessors, (15), 3 states have return successors, (16), 6 states have call predecessors, (16), 8 states have call successors, (16) [2021-12-06 17:19:34,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3564 states and 4962 transitions. [2021-12-06 17:19:34,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2021-12-06 17:19:34,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:19:34,722 INFO L514 BasicCegarLoop]: trace histogram [41, 38, 22, 22, 22, 22, 20, 20, 19, 19, 19, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-12-06 17:19:34,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2021-12-06 17:19:34,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2021-12-06 17:19:34,923 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:19:34,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:19:34,924 INFO L85 PathProgramCache]: Analyzing trace with hash 797955593, now seen corresponding path program 10 times [2021-12-06 17:19:34,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:19:34,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545221943] [2021-12-06 17:19:34,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:19:34,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:19:34,956 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:19:34,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951307435] [2021-12-06 17:19:34,956 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:19:34,957 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:19:34,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:19:34,958 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:19:34,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2021-12-06 17:19:35,156 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:19:35,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:19:35,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 874 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 17:19:35,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:19:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 1670 proven. 310 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2021-12-06 17:19:37,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:19:45,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4650 backedges. 1670 proven. 344 refuted. 0 times theorem prover too weak. 2636 trivial. 0 not checked. [2021-12-06 17:19:45,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:19:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545221943] [2021-12-06 17:19:45,202 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:19:45,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951307435] [2021-12-06 17:19:45,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951307435] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:19:45,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:19:45,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 32] total 45 [2021-12-06 17:19:45,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158136146] [2021-12-06 17:19:45,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:19:45,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-06 17:19:45,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:19:45,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-06 17:19:45,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1798, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 17:19:45,204 INFO L87 Difference]: Start difference. First operand 3564 states and 4962 transitions. Second operand has 45 states, 41 states have (on average 4.341463414634147) internal successors, (178), 42 states have internal predecessors, (178), 24 states have call successors, (31), 9 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2021-12-06 17:20:01,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:01,843 INFO L93 Difference]: Finished difference Result 12880 states and 20636 transitions. [2021-12-06 17:20:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-12-06 17:20:01,844 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 4.341463414634147) internal successors, (178), 42 states have internal predecessors, (178), 24 states have call successors, (31), 9 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) Word has length 435 [2021-12-06 17:20:01,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:01,869 INFO L225 Difference]: With dead ends: 12880 [2021-12-06 17:20:01,870 INFO L226 Difference]: Without dead ends: 9837 [2021-12-06 17:20:01,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 941 GetRequests, 837 SyntacticMatches, 1 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2601 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1308, Invalid=9612, Unknown=0, NotChecked=0, Total=10920 [2021-12-06 17:20:01,883 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 733 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 3600 mSolverCounterSat, 495 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 766 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 4095 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 3600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:01,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [766 Valid, 951 Invalid, 4095 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [495 Valid, 3600 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-12-06 17:20:01,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9837 states. [2021-12-06 17:20:02,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9837 to 6348. [2021-12-06 17:20:02,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6348 states, 5148 states have (on average 1.1342268842268843) internal successors, (5839), 5068 states have internal predecessors, (5839), 916 states have call successors, (916), 208 states have call predecessors, (916), 279 states have return successors, (2571), 1071 states have call predecessors, (2571), 908 states have call successors, (2571) [2021-12-06 17:20:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6348 states to 6348 states and 9326 transitions. [2021-12-06 17:20:02,213 INFO L78 Accepts]: Start accepts. Automaton has 6348 states and 9326 transitions. Word has length 435 [2021-12-06 17:20:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:02,214 INFO L470 AbstractCegarLoop]: Abstraction has 6348 states and 9326 transitions. [2021-12-06 17:20:02,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 4.341463414634147) internal successors, (178), 42 states have internal predecessors, (178), 24 states have call successors, (31), 9 states have call predecessors, (31), 11 states have return successors, (29), 13 states have call predecessors, (29), 16 states have call successors, (29) [2021-12-06 17:20:02,214 INFO L276 IsEmpty]: Start isEmpty. Operand 6348 states and 9326 transitions. [2021-12-06 17:20:02,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2021-12-06 17:20:02,217 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:02,217 INFO L514 BasicCegarLoop]: trace histogram [49, 49, 25, 25, 25, 25, 25, 25, 25, 25, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:02,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2021-12-06 17:20:02,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2021-12-06 17:20:02,418 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:20:02,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:02,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1960927721, now seen corresponding path program 4 times [2021-12-06 17:20:02,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:02,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768637648] [2021-12-06 17:20:02,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:02,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:02,438 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:20:02,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1176662286] [2021-12-06 17:20:02,438 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:20:02,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:20:02,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:20:02,439 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:20:02,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2021-12-06 17:20:02,543 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:20:02,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:20:02,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 681 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 17:20:02,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:03,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7039 backedges. 1505 proven. 314 refuted. 0 times theorem prover too weak. 5220 trivial. 0 not checked. [2021-12-06 17:20:03,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:20:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 7039 backedges. 1505 proven. 324 refuted. 0 times theorem prover too weak. 5210 trivial. 0 not checked. [2021-12-06 17:20:08,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:08,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768637648] [2021-12-06 17:20:08,286 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:20:08,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176662286] [2021-12-06 17:20:08,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176662286] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:20:08,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:20:08,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18] total 22 [2021-12-06 17:20:08,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111959703] [2021-12-06 17:20:08,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:20:08,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 17:20:08,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:08,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 17:20:08,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:20:08,289 INFO L87 Difference]: Start difference. First operand 6348 states and 9326 transitions. Second operand has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 21 states have internal predecessors, (113), 14 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (26), 10 states have call predecessors, (26), 14 states have call successors, (26) [2021-12-06 17:20:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:13,272 INFO L93 Difference]: Finished difference Result 12743 states and 19749 transitions. [2021-12-06 17:20:13,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 17:20:13,275 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 21 states have internal predecessors, (113), 14 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (26), 10 states have call predecessors, (26), 14 states have call successors, (26) Word has length 523 [2021-12-06 17:20:13,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:13,289 INFO L225 Difference]: With dead ends: 12743 [2021-12-06 17:20:13,290 INFO L226 Difference]: Without dead ends: 7000 [2021-12-06 17:20:13,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 1035 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=244, Invalid=1316, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 17:20:13,302 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 300 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 1257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:13,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 782 Invalid, 1257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 17:20:13,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7000 states. [2021-12-06 17:20:13,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7000 to 5946. [2021-12-06 17:20:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5946 states, 4824 states have (on average 1.1345356550580432) internal successors, (5473), 4760 states have internal predecessors, (5473), 854 states have call successors, (854), 202 states have call predecessors, (854), 263 states have return successors, (2309), 983 states have call predecessors, (2309), 846 states have call successors, (2309) [2021-12-06 17:20:13,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5946 states to 5946 states and 8636 transitions. [2021-12-06 17:20:13,570 INFO L78 Accepts]: Start accepts. Automaton has 5946 states and 8636 transitions. Word has length 523 [2021-12-06 17:20:13,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:13,571 INFO L470 AbstractCegarLoop]: Abstraction has 5946 states and 8636 transitions. [2021-12-06 17:20:13,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 21 states have internal predecessors, (113), 14 states have call successors, (24), 2 states have call predecessors, (24), 7 states have return successors, (26), 10 states have call predecessors, (26), 14 states have call successors, (26) [2021-12-06 17:20:13,571 INFO L276 IsEmpty]: Start isEmpty. Operand 5946 states and 8636 transitions. [2021-12-06 17:20:13,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2021-12-06 17:20:13,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:13,574 INFO L514 BasicCegarLoop]: trace histogram [48, 48, 24, 24, 24, 24, 24, 24, 24, 24, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:13,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Ended with exit code 0 [2021-12-06 17:20:13,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-12-06 17:20:13,776 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:20:13,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:13,777 INFO L85 PathProgramCache]: Analyzing trace with hash 181172471, now seen corresponding path program 5 times [2021-12-06 17:20:13,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:13,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258639341] [2021-12-06 17:20:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:13,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:13,793 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:20:13,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573915922] [2021-12-06 17:20:13,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:20:13,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:20:13,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:20:13,794 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:20:13,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2021-12-06 17:20:13,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-12-06 17:20:13,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:20:13,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1030 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 17:20:14,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 6703 backedges. 1756 proven. 9 refuted. 0 times theorem prover too weak. 4938 trivial. 0 not checked. [2021-12-06 17:20:14,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:20:16,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6703 backedges. 788 proven. 75 refuted. 0 times theorem prover too weak. 5840 trivial. 0 not checked. [2021-12-06 17:20:16,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:16,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258639341] [2021-12-06 17:20:16,760 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:20:16,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573915922] [2021-12-06 17:20:16,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573915922] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:20:16,760 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:20:16,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17] total 18 [2021-12-06 17:20:16,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948971871] [2021-12-06 17:20:16,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:20:16,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 17:20:16,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:16,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 17:20:16,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-12-06 17:20:16,761 INFO L87 Difference]: Start difference. First operand 5946 states and 8636 transitions. Second operand has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 10 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2021-12-06 17:20:18,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:18,605 INFO L93 Difference]: Finished difference Result 9898 states and 14657 transitions. [2021-12-06 17:20:18,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 17:20:18,606 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 10 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) Word has length 513 [2021-12-06 17:20:18,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:18,615 INFO L225 Difference]: With dead ends: 9898 [2021-12-06 17:20:18,615 INFO L226 Difference]: Without dead ends: 4411 [2021-12-06 17:20:18,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1034 GetRequests, 1008 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-12-06 17:20:18,626 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 116 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:18,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 548 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 17:20:18,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2021-12-06 17:20:18,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 4139. [2021-12-06 17:20:18,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4139 states, 3340 states have (on average 1.117065868263473) internal successors, (3731), 3299 states have internal predecessors, (3731), 586 states have call successors, (586), 154 states have call predecessors, (586), 208 states have return successors, (1640), 685 states have call predecessors, (1640), 582 states have call successors, (1640) [2021-12-06 17:20:18,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 5957 transitions. [2021-12-06 17:20:18,799 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 5957 transitions. Word has length 513 [2021-12-06 17:20:18,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:18,799 INFO L470 AbstractCegarLoop]: Abstraction has 4139 states and 5957 transitions. [2021-12-06 17:20:18,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 10 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 7 states have call predecessors, (19), 9 states have call successors, (19) [2021-12-06 17:20:18,799 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 5957 transitions. [2021-12-06 17:20:18,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2021-12-06 17:20:18,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:18,802 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 21, 16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2021-12-06 17:20:18,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2021-12-06 17:20:19,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2021-12-06 17:20:19,003 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:20:19,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:19,004 INFO L85 PathProgramCache]: Analyzing trace with hash 104341653, now seen corresponding path program 2 times [2021-12-06 17:20:19,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:19,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659936034] [2021-12-06 17:20:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:19,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:19,034 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:20:19,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [175610721] [2021-12-06 17:20:19,034 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:20:19,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:20:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:20:19,036 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:20:19,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2021-12-06 17:20:19,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:20:19,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:20:19,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 17:20:19,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 2 proven. 130 refuted. 0 times theorem prover too weak. 3724 trivial. 0 not checked. [2021-12-06 17:20:19,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:20:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3856 backedges. 2 proven. 130 refuted. 0 times theorem prover too weak. 3724 trivial. 0 not checked. [2021-12-06 17:20:20,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:20,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659936034] [2021-12-06 17:20:20,627 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:20:20,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175610721] [2021-12-06 17:20:20,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175610721] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:20:20,627 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:20:20,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-12-06 17:20:20,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749693847] [2021-12-06 17:20:20,627 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:20:20,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 17:20:20,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:20,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 17:20:20,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:20:20,628 INFO L87 Difference]: Start difference. First operand 4139 states and 5957 transitions. Second operand has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2021-12-06 17:20:24,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:24,243 INFO L93 Difference]: Finished difference Result 4249 states and 6093 transitions. [2021-12-06 17:20:24,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-12-06 17:20:24,244 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) Word has length 416 [2021-12-06 17:20:24,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:24,252 INFO L225 Difference]: With dead ends: 4249 [2021-12-06 17:20:24,253 INFO L226 Difference]: Without dead ends: 4230 [2021-12-06 17:20:24,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 885 GetRequests, 810 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1828 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1284, Invalid=4568, Unknown=0, NotChecked=0, Total=5852 [2021-12-06 17:20:24,255 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 171 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:24,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 526 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 17:20:24,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2021-12-06 17:20:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 3419. [2021-12-06 17:20:24,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 2729 states have (on average 1.0879443019421033) internal successors, (2969), 2704 states have internal predecessors, (2969), 492 states have call successors, (492), 148 states have call predecessors, (492), 194 states have return successors, (1215), 566 states have call predecessors, (1215), 486 states have call successors, (1215) [2021-12-06 17:20:24,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 4676 transitions. [2021-12-06 17:20:24,420 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 4676 transitions. Word has length 416 [2021-12-06 17:20:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:24,421 INFO L470 AbstractCegarLoop]: Abstraction has 3419 states and 4676 transitions. [2021-12-06 17:20:24,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 5.238095238095238) internal successors, (110), 22 states have internal predecessors, (110), 11 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 11 states have call predecessors, (16), 11 states have call successors, (16) [2021-12-06 17:20:24,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 4676 transitions. [2021-12-06 17:20:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2021-12-06 17:20:24,424 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:24,424 INFO L514 BasicCegarLoop]: trace histogram [50, 50, 26, 26, 26, 26, 26, 26, 26, 26, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:24,444 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2021-12-06 17:20:24,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:20:24,626 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:20:24,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash 727114295, now seen corresponding path program 6 times [2021-12-06 17:20:24,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:24,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009980498] [2021-12-06 17:20:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:24,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:24,664 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:20:24,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1287603968] [2021-12-06 17:20:24,664 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 17:20:24,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:20:24,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:20:24,666 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:20:24,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2021-12-06 17:20:24,871 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-12-06 17:20:24,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:20:24,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 17:20:24,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:26,523 INFO L134 CoverageAnalysis]: Checked inductivity of 7385 backedges. 979 proven. 116 refuted. 0 times theorem prover too weak. 6290 trivial. 0 not checked. [2021-12-06 17:20:26,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:20:30,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:30,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009980498] [2021-12-06 17:20:30,677 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:20:30,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287603968] [2021-12-06 17:20:30,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287603968] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:20:30,678 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 17:20:30,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-12-06 17:20:30,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965153219] [2021-12-06 17:20:30,678 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 17:20:30,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 17:20:30,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 17:20:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:20:30,679 INFO L87 Difference]: Start difference. First operand 3419 states and 4676 transitions. Second operand has 17 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 7 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2021-12-06 17:20:33,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:33,100 INFO L93 Difference]: Finished difference Result 3732 states and 5099 transitions. [2021-12-06 17:20:33,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 17:20:33,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 7 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 533 [2021-12-06 17:20:33,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:33,107 INFO L225 Difference]: With dead ends: 3732 [2021-12-06 17:20:33,107 INFO L226 Difference]: Without dead ends: 3729 [2021-12-06 17:20:33,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 520 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=138, Invalid=918, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 17:20:33,108 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 50 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:33,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 545 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 17:20:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3729 states. [2021-12-06 17:20:33,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3729 to 3712. [2021-12-06 17:20:33,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3712 states, 2960 states have (on average 1.085472972972973) internal successors, (3213), 2934 states have internal predecessors, (3213), 541 states have call successors, (541), 158 states have call predecessors, (541), 207 states have return successors, (1292), 619 states have call predecessors, (1292), 534 states have call successors, (1292) [2021-12-06 17:20:33,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3712 states to 3712 states and 5046 transitions. [2021-12-06 17:20:33,263 INFO L78 Accepts]: Start accepts. Automaton has 3712 states and 5046 transitions. Word has length 533 [2021-12-06 17:20:33,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:33,264 INFO L470 AbstractCegarLoop]: Abstraction has 3712 states and 5046 transitions. [2021-12-06 17:20:33,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.4375) internal successors, (71), 15 states have internal predecessors, (71), 7 states have call successors, (14), 2 states have call predecessors, (14), 4 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2021-12-06 17:20:33,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3712 states and 5046 transitions. [2021-12-06 17:20:33,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2021-12-06 17:20:33,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:33,267 INFO L514 BasicCegarLoop]: trace histogram [43, 42, 22, 22, 22, 22, 22, 22, 21, 21, 21, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2021-12-06 17:20:33,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2021-12-06 17:20:33,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:20:33,468 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:20:33,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:33,469 INFO L85 PathProgramCache]: Analyzing trace with hash -707588957, now seen corresponding path program 11 times [2021-12-06 17:20:33,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:33,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101590047] [2021-12-06 17:20:33,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:33,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:33,503 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:20:33,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [998871648] [2021-12-06 17:20:33,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:20:33,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:20:33,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:20:33,505 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:20:33,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2021-12-06 17:20:33,799 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-12-06 17:20:33,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:20:33,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 922 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 17:20:33,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:20:34,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5289 backedges. 657 proven. 139 refuted. 0 times theorem prover too weak. 4493 trivial. 0 not checked. [2021-12-06 17:20:34,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:20:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 5289 backedges. 657 proven. 140 refuted. 0 times theorem prover too weak. 4492 trivial. 0 not checked. [2021-12-06 17:20:36,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:20:36,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101590047] [2021-12-06 17:20:36,759 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:20:36,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998871648] [2021-12-06 17:20:36,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998871648] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:20:36,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:20:36,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 20 [2021-12-06 17:20:36,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416271369] [2021-12-06 17:20:36,760 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:20:36,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 17:20:36,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:20:36,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 17:20:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2021-12-06 17:20:36,761 INFO L87 Difference]: Start difference. First operand 3712 states and 5046 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 17 states have internal predecessors, (93), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2021-12-06 17:20:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:20:39,980 INFO L93 Difference]: Finished difference Result 7503 states and 10453 transitions. [2021-12-06 17:20:39,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 17:20:39,981 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 17 states have internal predecessors, (93), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) Word has length 459 [2021-12-06 17:20:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:20:39,990 INFO L225 Difference]: With dead ends: 7503 [2021-12-06 17:20:39,991 INFO L226 Difference]: Without dead ends: 4567 [2021-12-06 17:20:39,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 931 GetRequests, 899 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=161, Invalid=961, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 17:20:39,998 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 164 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-06 17:20:39,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 448 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-06 17:20:40,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2021-12-06 17:20:40,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 3862. [2021-12-06 17:20:40,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3862 states, 3080 states have (on average 1.0831168831168831) internal successors, (3336), 3057 states have internal predecessors, (3336), 559 states have call successors, (559), 171 states have call predecessors, (559), 219 states have return successors, (1320), 633 states have call predecessors, (1320), 552 states have call successors, (1320) [2021-12-06 17:20:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 5215 transitions. [2021-12-06 17:20:40,180 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 5215 transitions. Word has length 459 [2021-12-06 17:20:40,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:20:40,180 INFO L470 AbstractCegarLoop]: Abstraction has 3862 states and 5215 transitions. [2021-12-06 17:20:40,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 17 states have internal predecessors, (93), 11 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (16), 8 states have call predecessors, (16), 9 states have call successors, (16) [2021-12-06 17:20:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 5215 transitions. [2021-12-06 17:20:40,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2021-12-06 17:20:40,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:20:40,184 INFO L514 BasicCegarLoop]: trace histogram [54, 53, 30, 30, 30, 30, 30, 30, 29, 29, 24, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:20:40,204 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2021-12-06 17:20:40,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:20:40,385 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2021-12-06 17:20:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:20:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1572351060, now seen corresponding path program 12 times [2021-12-06 17:20:40,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:20:40,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099257774] [2021-12-06 17:20:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:20:40,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:20:40,422 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:20:40,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1902806895] [2021-12-06 17:20:40,423 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 17:20:40,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:20:40,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:20:40,424 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:20:40,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaa3be9b-f5a2-4bf1-887d-66feb6e6b077/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2021-12-06 17:20:40,838 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-12-06 17:20:40,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:20:40,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1008 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-06 17:20:40,846 INFO L286 TraceCheckSpWp]: Computing forward predicates...