./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 dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Binomial.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:47:48,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:47:48,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:47:48,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:47:48,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:47:48,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:47:48,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:47:48,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:47:48,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:47:48,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:47:48,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:47:48,173 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:47:48,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:47:48,181 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:47:48,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:47:48,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:47:48,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:47:48,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:47:48,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:47:48,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:47:48,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:47:48,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:47:48,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:47:48,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:47:48,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:47:48,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:47:48,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:47:48,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:47:48,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:47:48,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:47:48,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:47:48,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:47:48,224 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:47:48,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:47:48,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:47:48,227 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:47:48,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:47:48,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:47:48,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:47:48,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:47:48,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:47:48,230 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-10-17 10:47:48,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:47:48,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:47:48,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:47:48,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:47:48,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:47:48,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:47:48,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:47:48,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:47:48,282 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:47:48,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:47:48,283 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:47:48,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:47:48,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:47:48,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 10:47:48,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:47:48,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 10:47:48,285 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-17 10:47:48,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 10:47:48,285 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:47:48,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 10:47:48,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:47:48,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:47:48,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:47:48,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:47:48,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:47:48,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:47:48,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 10:47:48,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:47:48,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:47:48,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 10:47:48,288 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_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c204b56aba09d3ce87e17edffdff1d33aa0b4dc87a1e1140339548dffa982588 [2022-10-17 10:47:48,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:47:48,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:47:48,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:47:48,581 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:47:48,582 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:47:48,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-numeric/Binomial.c [2022-10-17 10:47:48,688 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/data/32218b6f5/16f7f9ab24674e988d73d80728ad51ca/FLAG626cf5f3c [2022-10-17 10:47:49,209 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:47:49,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/sv-benchmarks/c/termination-numeric/Binomial.c [2022-10-17 10:47:49,220 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/data/32218b6f5/16f7f9ab24674e988d73d80728ad51ca/FLAG626cf5f3c [2022-10-17 10:47:49,574 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/data/32218b6f5/16f7f9ab24674e988d73d80728ad51ca [2022-10-17 10:47:49,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:47:49,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:47:49,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:47:49,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:47:49,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:47:49,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e9e2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49, skipping insertion in model container [2022-10-17 10:47:49,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:47:49,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:47:49,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:47:49,820 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:47:49,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:47:49,847 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:47:49,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49 WrapperNode [2022-10-17 10:47:49,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:47:49,849 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:47:49,849 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:47:49,849 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:47:49,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,879 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2022-10-17 10:47:49,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:47:49,880 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:47:49,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:47:49,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:47:49,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,895 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,900 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:47:49,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:47:49,905 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:47:49,905 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:47:49,913 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (1/1) ... [2022-10-17 10:47:49,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:47:49,931 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:49,955 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:47:49,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:47:50,002 INFO L130 BoogieDeclarations]: Found specification of procedure fact [2022-10-17 10:47:50,003 INFO L138 BoogieDeclarations]: Found implementation of procedure fact [2022-10-17 10:47:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure binomialCoefficient [2022-10-17 10:47:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure binomialCoefficient [2022-10-17 10:47:50,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:47:50,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:47:50,069 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:47:50,073 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:47:50,386 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:47:50,408 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:47:50,408 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-17 10:47:50,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:47:50 BoogieIcfgContainer [2022-10-17 10:47:50,410 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:47:50,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:47:50,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:47:50,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:47:50,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:47:49" (1/3) ... [2022-10-17 10:47:50,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3102d454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:47:50, skipping insertion in model container [2022-10-17 10:47:50,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:47:49" (2/3) ... [2022-10-17 10:47:50,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3102d454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:47:50, skipping insertion in model container [2022-10-17 10:47:50,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:47:50" (3/3) ... [2022-10-17 10:47:50,447 INFO L112 eAbstractionObserver]: Analyzing ICFG Binomial.c [2022-10-17 10:47:50,466 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:47:50,467 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2022-10-17 10:47:50,544 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:47:50,556 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@268093bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:47:50,556 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2022-10-17 10:47:50,560 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) [2022-10-17 10:47:50,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:47:50,570 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:50,571 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:50,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:50,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:50,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1446708258, now seen corresponding path program 1 times [2022-10-17 10:47:50,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:50,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997606839] [2022-10-17 10:47:50,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:50,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:50,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:50,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:50,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997606839] [2022-10-17 10:47:50,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997606839] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:50,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:50,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:47:50,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070059777] [2022-10-17 10:47:50,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:50,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:47:50,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:50,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:47:50,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:47:50,802 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) [2022-10-17 10:47:50,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:50,839 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2022-10-17 10:47:50,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:47:50,842 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 [2022-10-17 10:47:50,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:50,856 INFO L225 Difference]: With dead ends: 114 [2022-10-17 10:47:50,856 INFO L226 Difference]: Without dead ends: 56 [2022-10-17 10:47:50,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:47:50,867 INFO L413 NwaCegarLoop]: 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 [2022-10-17 10:47:50,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:47:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-10-17 10:47:50,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-10-17 10:47:50,913 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) [2022-10-17 10:47:50,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2022-10-17 10:47:50,921 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 8 [2022-10-17 10:47:50,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:50,922 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2022-10-17 10:47:50,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 10:47:50,923 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2022-10-17 10:47:50,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-17 10:47:50,924 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:50,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:50,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-17 10:47:50,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:50,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:50,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1446689999, now seen corresponding path program 1 times [2022-10-17 10:47:50,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:50,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597502444] [2022-10-17 10:47:50,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:50,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:51,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597502444] [2022-10-17 10:47:51,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597502444] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:51,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:51,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:47:51,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779579447] [2022-10-17 10:47:51,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:51,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:47:51,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:51,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:47:51,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:47:51,096 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) [2022-10-17 10:47:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:51,171 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2022-10-17 10:47:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:47:51,172 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 [2022-10-17 10:47:51,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:51,173 INFO L225 Difference]: With dead ends: 109 [2022-10-17 10:47:51,173 INFO L226 Difference]: Without dead ends: 57 [2022-10-17 10:47:51,175 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:51,177 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 27 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:51,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 141 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:47:51,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-17 10:47:51,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-10-17 10:47:51,187 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) [2022-10-17 10:47:51,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2022-10-17 10:47:51,189 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 8 [2022-10-17 10:47:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:51,189 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2022-10-17 10:47:51,190 INFO L496 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) [2022-10-17 10:47:51,190 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2022-10-17 10:47:51,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:47:51,191 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:51,191 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:51,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-17 10:47:51,192 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:51,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:51,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1304665248, now seen corresponding path program 1 times [2022-10-17 10:47:51,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:51,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932226509] [2022-10-17 10:47:51,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:51,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:51,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:51,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932226509] [2022-10-17 10:47:51,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932226509] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:51,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:51,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:47:51,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813891891] [2022-10-17 10:47:51,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:51,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:47:51,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:51,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:47:51,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:47:51,311 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) [2022-10-17 10:47:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:51,515 INFO L93 Difference]: Finished difference Result 155 states and 182 transitions. [2022-10-17 10:47:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:47:51,516 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 [2022-10-17 10:47:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:51,519 INFO L225 Difference]: With dead ends: 155 [2022-10-17 10:47:51,519 INFO L226 Difference]: Without dead ends: 102 [2022-10-17 10:47:51,520 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:51,521 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 52 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:51,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 329 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:47:51,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-10-17 10:47:51,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2022-10-17 10:47:51,541 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) [2022-10-17 10:47:51,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 107 transitions. [2022-10-17 10:47:51,544 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 107 transitions. Word has length 13 [2022-10-17 10:47:51,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:51,544 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 107 transitions. [2022-10-17 10:47:51,544 INFO L496 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) [2022-10-17 10:47:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 107 transitions. [2022-10-17 10:47:51,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-10-17 10:47:51,545 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:51,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:51,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-17 10:47:51,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:51,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:51,547 INFO L85 PathProgramCache]: Analyzing trace with hash 616970978, now seen corresponding path program 1 times [2022-10-17 10:47:51,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:51,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279113178] [2022-10-17 10:47:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:51,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:51,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:51,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:51,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279113178] [2022-10-17 10:47:51,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279113178] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:51,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:51,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:47:51,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091714523] [2022-10-17 10:47:51,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:51,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:47:51,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:51,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:47:51,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:47:51,596 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) [2022-10-17 10:47:51,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:51,683 INFO L93 Difference]: Finished difference Result 186 states and 225 transitions. [2022-10-17 10:47:51,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:47:51,684 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 [2022-10-17 10:47:51,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:51,685 INFO L225 Difference]: With dead ends: 186 [2022-10-17 10:47:51,686 INFO L226 Difference]: Without dead ends: 105 [2022-10-17 10:47:51,687 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:51,689 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 34 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:51,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 164 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:47:51,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-10-17 10:47:51,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2022-10-17 10:47:51,703 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) [2022-10-17 10:47:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 108 transitions. [2022-10-17 10:47:51,705 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 108 transitions. Word has length 13 [2022-10-17 10:47:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:51,706 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 108 transitions. [2022-10-17 10:47:51,706 INFO L496 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) [2022-10-17 10:47:51,706 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 108 transitions. [2022-10-17 10:47:51,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-10-17 10:47:51,707 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:51,707 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:51,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-17 10:47:51,708 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:51,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1503380349, now seen corresponding path program 1 times [2022-10-17 10:47:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:51,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336711904] [2022-10-17 10:47:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:51,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:47:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:51,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:47:51,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:51,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336711904] [2022-10-17 10:47:51,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336711904] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:51,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:51,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:47:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814689253] [2022-10-17 10:47:51,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:51,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:47:51,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:51,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:47:51,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:47:51,815 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) [2022-10-17 10:47:51,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:51,992 INFO L93 Difference]: Finished difference Result 226 states and 294 transitions. [2022-10-17 10:47:51,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:47:51,994 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 [2022-10-17 10:47:51,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:51,998 INFO L225 Difference]: With dead ends: 226 [2022-10-17 10:47:51,998 INFO L226 Difference]: Without dead ends: 145 [2022-10-17 10:47:52,003 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:52,009 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 43 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:52,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 309 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:47:52,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-10-17 10:47:52,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 125. [2022-10-17 10:47:52,039 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) [2022-10-17 10:47:52,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 163 transitions. [2022-10-17 10:47:52,047 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 163 transitions. Word has length 19 [2022-10-17 10:47:52,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:52,047 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 163 transitions. [2022-10-17 10:47:52,048 INFO L496 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) [2022-10-17 10:47:52,049 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 163 transitions. [2022-10-17 10:47:52,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:47:52,052 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:52,053 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:52,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-10-17 10:47:52,054 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:52,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:52,055 INFO L85 PathProgramCache]: Analyzing trace with hash -715516421, now seen corresponding path program 1 times [2022-10-17 10:47:52,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:52,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380534839] [2022-10-17 10:47:52,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:52,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:47:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:47:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:52,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:47:52,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:52,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380534839] [2022-10-17 10:47:52,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380534839] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:52,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:52,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:47:52,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970465207] [2022-10-17 10:47:52,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:52,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:47:52,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:52,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:47:52,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:47:52,281 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) [2022-10-17 10:47:52,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:52,402 INFO L93 Difference]: Finished difference Result 149 states and 179 transitions. [2022-10-17 10:47:52,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:47:52,403 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 [2022-10-17 10:47:52,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:52,405 INFO L225 Difference]: With dead ends: 149 [2022-10-17 10:47:52,405 INFO L226 Difference]: Without dead ends: 148 [2022-10-17 10:47:52,405 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:52,410 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 63 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:52,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 259 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:47:52,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2022-10-17 10:47:52,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 125. [2022-10-17 10:47:52,435 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) [2022-10-17 10:47:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 162 transitions. [2022-10-17 10:47:52,437 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 162 transitions. Word has length 22 [2022-10-17 10:47:52,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:52,437 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 162 transitions. [2022-10-17 10:47:52,437 INFO L496 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) [2022-10-17 10:47:52,438 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 162 transitions. [2022-10-17 10:47:52,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 10:47:52,439 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:52,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:47:52,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-10-17 10:47:52,439 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:52,440 INFO L85 PathProgramCache]: Analyzing trace with hash -706172517, now seen corresponding path program 1 times [2022-10-17 10:47:52,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:52,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822714675] [2022-10-17 10:47:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:52,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:52,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:47:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:52,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:47:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:52,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:47:52,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:52,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822714675] [2022-10-17 10:47:52,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822714675] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:52,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:52,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:47:52,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47432073] [2022-10-17 10:47:52,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:52,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:47:52,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:52,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:47:52,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:47:52,518 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) [2022-10-17 10:47:52,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:52,606 INFO L93 Difference]: Finished difference Result 163 states and 200 transitions. [2022-10-17 10:47:52,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:47:52,606 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 [2022-10-17 10:47:52,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:52,609 INFO L225 Difference]: With dead ends: 163 [2022-10-17 10:47:52,609 INFO L226 Difference]: Without dead ends: 162 [2022-10-17 10:47:52,609 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:52,610 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 61 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:52,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 246 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:47:52,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-10-17 10:47:52,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 140. [2022-10-17 10:47:52,624 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) [2022-10-17 10:47:52,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 181 transitions. [2022-10-17 10:47:52,626 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 181 transitions. Word has length 23 [2022-10-17 10:47:52,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:52,627 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 181 transitions. [2022-10-17 10:47:52,627 INFO L496 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) [2022-10-17 10:47:52,627 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 181 transitions. [2022-10-17 10:47:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 10:47:52,628 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:52,628 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:52,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-10-17 10:47:52,629 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash -131105574, now seen corresponding path program 1 times [2022-10-17 10:47:52,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:52,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294410417] [2022-10-17 10:47:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:52,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:52,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:52,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-10-17 10:47:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:52,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-10-17 10:47:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:47:52,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:52,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294410417] [2022-10-17 10:47:52,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294410417] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:52,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:52,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:47:52,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138574055] [2022-10-17 10:47:52,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:52,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:47:52,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:52,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:47:52,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:47:52,727 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) [2022-10-17 10:47:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:52,878 INFO L93 Difference]: Finished difference Result 292 states and 376 transitions. [2022-10-17 10:47:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-10-17 10:47:52,878 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 [2022-10-17 10:47:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:52,881 INFO L225 Difference]: With dead ends: 292 [2022-10-17 10:47:52,881 INFO L226 Difference]: Without dead ends: 168 [2022-10-17 10:47:52,882 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:52,883 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 64 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:52,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 342 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:47:52,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-10-17 10:47:52,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 144. [2022-10-17 10:47:52,905 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) [2022-10-17 10:47:52,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2022-10-17 10:47:52,909 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 27 [2022-10-17 10:47:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:52,909 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2022-10-17 10:47:52,909 INFO L496 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) [2022-10-17 10:47:52,909 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2022-10-17 10:47:52,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-17 10:47:52,911 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:52,911 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:52,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-10-17 10:47:52,911 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:52,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1641411648, now seen corresponding path program 1 times [2022-10-17 10:47:52,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:52,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617020878] [2022-10-17 10:47:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:52,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:52,934 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:47:52,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1184623821] [2022-10-17 10:47:52,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:52,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:52,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:52,936 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:47:52,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-17 10:47:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:52,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:47:52,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:47:53,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 10:47:53,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:47:53,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:53,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617020878] [2022-10-17 10:47:53,096 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:47:53,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1184623821] [2022-10-17 10:47:53,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1184623821] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:53,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:53,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:47:53,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290864819] [2022-10-17 10:47:53,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:53,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:47:53,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:47:53,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:47:53,100 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) [2022-10-17 10:47:53,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:53,177 INFO L93 Difference]: Finished difference Result 203 states and 281 transitions. [2022-10-17 10:47:53,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:47:53,178 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 [2022-10-17 10:47:53,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:53,185 INFO L225 Difference]: With dead ends: 203 [2022-10-17 10:47:53,185 INFO L226 Difference]: Without dead ends: 201 [2022-10-17 10:47:53,185 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:53,188 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 16 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:53,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 206 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:47:53,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-10-17 10:47:53,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 170. [2022-10-17 10:47:53,202 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) [2022-10-17 10:47:53,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 228 transitions. [2022-10-17 10:47:53,206 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 228 transitions. Word has length 30 [2022-10-17 10:47:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:53,207 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 228 transitions. [2022-10-17 10:47:53,207 INFO L496 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) [2022-10-17 10:47:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 228 transitions. [2022-10-17 10:47:53,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-10-17 10:47:53,211 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:53,212 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:53,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:47:53,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:53,425 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:53,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:53,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1143594174, now seen corresponding path program 1 times [2022-10-17 10:47:53,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:53,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556318935] [2022-10-17 10:47:53,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:53,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:53,433 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:47:53,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731523187] [2022-10-17 10:47:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:53,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:53,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:53,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:47:53,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-17 10:47:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:53,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:47:53,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:47:53,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-10-17 10:47:53,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:47:56,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:56,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556318935] [2022-10-17 10:47:56,210 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:47:56,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731523187] [2022-10-17 10:47:56,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731523187] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:47:56,211 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:47:56,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2022-10-17 10:47:56,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918624640] [2022-10-17 10:47:56,211 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-17 10:47:56,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:47:56,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:56,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:47:56,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:47:56,213 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) [2022-10-17 10:47:56,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:56,319 INFO L93 Difference]: Finished difference Result 257 states and 355 transitions. [2022-10-17 10:47:56,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:47:56,320 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 [2022-10-17 10:47:56,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:56,322 INFO L225 Difference]: With dead ends: 257 [2022-10-17 10:47:56,322 INFO L226 Difference]: Without dead ends: 255 [2022-10-17 10:47:56,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:47:56,323 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 43 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:56,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 172 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:47:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-10-17 10:47:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 205. [2022-10-17 10:47:56,339 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) [2022-10-17 10:47:56,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 276 transitions. [2022-10-17 10:47:56,341 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 276 transitions. Word has length 32 [2022-10-17 10:47:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:56,342 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 276 transitions. [2022-10-17 10:47:56,342 INFO L496 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) [2022-10-17 10:47:56,342 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 276 transitions. [2022-10-17 10:47:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-10-17 10:47:56,343 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:56,343 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:56,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:47:56,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:56,562 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:56,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:56,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1848456444, now seen corresponding path program 1 times [2022-10-17 10:47:56,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:56,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471581586] [2022-10-17 10:47:56,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:56,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:56,572 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:47:56,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268273077] [2022-10-17 10:47:56,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:56,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:56,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:56,573 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:47:56,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-17 10:47:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:56,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:47:56,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:47:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:47:56,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:47:56,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:56,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471581586] [2022-10-17 10:47:56,654 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:47:56,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268273077] [2022-10-17 10:47:56,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268273077] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:56,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:56,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:47:56,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627107592] [2022-10-17 10:47:56,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:56,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:47:56,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:56,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:47:56,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:47:56,657 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) [2022-10-17 10:47:56,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:56,703 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2022-10-17 10:47:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:47:56,704 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 [2022-10-17 10:47:56,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:56,706 INFO L225 Difference]: With dead ends: 217 [2022-10-17 10:47:56,706 INFO L226 Difference]: Without dead ends: 216 [2022-10-17 10:47:56,706 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:56,707 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 7 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:56,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 171 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:47:56,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-10-17 10:47:56,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 213. [2022-10-17 10:47:56,721 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) [2022-10-17 10:47:56,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 285 transitions. [2022-10-17 10:47:56,724 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 285 transitions. Word has length 38 [2022-10-17 10:47:56,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:56,724 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 285 transitions. [2022-10-17 10:47:56,724 INFO L496 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) [2022-10-17 10:47:56,725 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 285 transitions. [2022-10-17 10:47:56,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-10-17 10:47:56,725 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:56,726 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:56,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:47:56,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-17 10:47:56,949 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:56,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:56,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1467574807, now seen corresponding path program 1 times [2022-10-17 10:47:56,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:56,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835289186] [2022-10-17 10:47:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:56,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:56,958 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:47:56,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [359097950] [2022-10-17 10:47:56,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:56,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:56,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:56,960 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:47:56,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-17 10:47:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:57,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:47:57,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:47:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:47:57,039 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:47:57,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:57,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835289186] [2022-10-17 10:47:57,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:47:57,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359097950] [2022-10-17 10:47:57,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359097950] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:57,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:57,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:47:57,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587195616] [2022-10-17 10:47:57,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:57,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:47:57,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:57,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:47:57,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:47:57,046 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) [2022-10-17 10:47:57,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:57,091 INFO L93 Difference]: Finished difference Result 213 states and 285 transitions. [2022-10-17 10:47:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:47:57,091 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 [2022-10-17 10:47:57,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:57,095 INFO L225 Difference]: With dead ends: 213 [2022-10-17 10:47:57,095 INFO L226 Difference]: Without dead ends: 212 [2022-10-17 10:47:57,095 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:57,095 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:57,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 148 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:47:57,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-10-17 10:47:57,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2022-10-17 10:47:57,109 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) [2022-10-17 10:47:57,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 283 transitions. [2022-10-17 10:47:57,112 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 283 transitions. Word has length 39 [2022-10-17 10:47:57,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:57,112 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 283 transitions. [2022-10-17 10:47:57,112 INFO L496 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) [2022-10-17 10:47:57,112 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 283 transitions. [2022-10-17 10:47:57,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-10-17 10:47:57,113 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:57,113 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:57,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-10-17 10:47:57,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:57,333 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2048877323, now seen corresponding path program 1 times [2022-10-17 10:47:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:57,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376693909] [2022-10-17 10:47:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:57,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:57,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:47:57,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096492242] [2022-10-17 10:47:57,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:57,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:57,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:57,348 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:47:57,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-17 10:47:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:57,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:47:57,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:47:57,449 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-17 10:47:57,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:47:57,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:57,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376693909] [2022-10-17 10:47:57,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:47:57,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096492242] [2022-10-17 10:47:57,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096492242] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:57,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:57,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:47:57,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709220991] [2022-10-17 10:47:57,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:57,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:47:57,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:57,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:47:57,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:47:57,452 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) [2022-10-17 10:47:57,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:57,491 INFO L93 Difference]: Finished difference Result 218 states and 288 transitions. [2022-10-17 10:47:57,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:47:57,492 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 [2022-10-17 10:47:57,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:57,494 INFO L225 Difference]: With dead ends: 218 [2022-10-17 10:47:57,494 INFO L226 Difference]: Without dead ends: 217 [2022-10-17 10:47:57,495 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:57,496 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:57,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 163 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:47:57,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-10-17 10:47:57,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 214. [2022-10-17 10:47:57,514 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) [2022-10-17 10:47:57,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 285 transitions. [2022-10-17 10:47:57,517 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 285 transitions. Word has length 42 [2022-10-17 10:47:57,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:57,518 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 285 transitions. [2022-10-17 10:47:57,518 INFO L496 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) [2022-10-17 10:47:57,518 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 285 transitions. [2022-10-17 10:47:57,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-10-17 10:47:57,523 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:57,523 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:57,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:47:57,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-17 10:47:57,729 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:57,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:57,730 INFO L85 PathProgramCache]: Analyzing trace with hash 909312544, now seen corresponding path program 1 times [2022-10-17 10:47:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:57,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133702737] [2022-10-17 10:47:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:57,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:57,739 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:47:57,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [532351700] [2022-10-17 10:47:57,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:57,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:57,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:57,740 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:47:57,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-17 10:47:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:57,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:47:57,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:47:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-10-17 10:47:57,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:47:57,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:57,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133702737] [2022-10-17 10:47:57,835 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:47:57,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532351700] [2022-10-17 10:47:57,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532351700] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:57,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:57,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:47:57,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847021070] [2022-10-17 10:47:57,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:57,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:47:57,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:57,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:47:57,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:47:57,837 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) [2022-10-17 10:47:57,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:57,873 INFO L93 Difference]: Finished difference Result 214 states and 285 transitions. [2022-10-17 10:47:57,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:47:57,874 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 [2022-10-17 10:47:57,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:57,878 INFO L225 Difference]: With dead ends: 214 [2022-10-17 10:47:57,878 INFO L226 Difference]: Without dead ends: 213 [2022-10-17 10:47:57,878 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:57,879 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:57,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 145 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:47:57,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-10-17 10:47:57,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2022-10-17 10:47:57,893 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) [2022-10-17 10:47:57,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 284 transitions. [2022-10-17 10:47:57,897 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 284 transitions. Word has length 43 [2022-10-17 10:47:57,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:57,898 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 284 transitions. [2022-10-17 10:47:57,899 INFO L496 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) [2022-10-17 10:47:57,899 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 284 transitions. [2022-10-17 10:47:57,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-10-17 10:47:57,900 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:57,900 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:57,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:47:58,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-17 10:47:58,121 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:58,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:58,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1923383932, now seen corresponding path program 1 times [2022-10-17 10:47:58,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:58,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122043487] [2022-10-17 10:47:58,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:58,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:58,135 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:47:58,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78746323] [2022-10-17 10:47:58,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:58,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:58,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:58,136 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:47:58,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-17 10:47:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:58,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:47:58,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:47:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:47:58,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:47:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:47:58,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:58,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122043487] [2022-10-17 10:47:58,434 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:47:58,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78746323] [2022-10-17 10:47:58,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78746323] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:47:58,434 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:47:58,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-10-17 10:47:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544040419] [2022-10-17 10:47:58,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:47:58,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:47:58,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:47:58,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:47:58,436 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) [2022-10-17 10:47:58,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:58,921 INFO L93 Difference]: Finished difference Result 316 states and 409 transitions. [2022-10-17 10:47:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-17 10:47:58,921 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 [2022-10-17 10:47:58,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:58,924 INFO L225 Difference]: With dead ends: 316 [2022-10-17 10:47:58,924 INFO L226 Difference]: Without dead ends: 315 [2022-10-17 10:47:58,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:47:58,925 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 182 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:58,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 589 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:47:58,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-10-17 10:47:58,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 278. [2022-10-17 10:47:58,943 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) [2022-10-17 10:47:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 384 transitions. [2022-10-17 10:47:58,945 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 384 transitions. Word has length 47 [2022-10-17 10:47:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:58,946 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 384 transitions. [2022-10-17 10:47:58,946 INFO L496 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) [2022-10-17 10:47:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 384 transitions. [2022-10-17 10:47:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-17 10:47:58,947 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:58,947 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:58,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:47:59,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-17 10:47:59,157 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:59,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:59,158 INFO L85 PathProgramCache]: Analyzing trace with hash -504640214, now seen corresponding path program 1 times [2022-10-17 10:47:59,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:59,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427869584] [2022-10-17 10:47:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:59,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:59,166 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:47:59,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897061132] [2022-10-17 10:47:59,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:59,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:59,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:59,167 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:47:59,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-17 10:47:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:59,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2022-10-17 10:47:59,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:47:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-10-17 10:47:59,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:47:59,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:59,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427869584] [2022-10-17 10:47:59,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:47:59,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897061132] [2022-10-17 10:47:59,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897061132] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:59,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:59,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:47:59,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409521871] [2022-10-17 10:47:59,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:59,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-17 10:47:59,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:59,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-17 10:47:59,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-17 10:47:59,220 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) [2022-10-17 10:47:59,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:59,246 INFO L93 Difference]: Finished difference Result 278 states and 384 transitions. [2022-10-17 10:47:59,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-17 10:47:59,247 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 [2022-10-17 10:47:59,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:59,250 INFO L225 Difference]: With dead ends: 278 [2022-10-17 10:47:59,250 INFO L226 Difference]: Without dead ends: 277 [2022-10-17 10:47:59,251 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:59,251 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 8 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:59,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 107 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:47:59,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-10-17 10:47:59,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 277. [2022-10-17 10:47:59,270 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) [2022-10-17 10:47:59,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 381 transitions. [2022-10-17 10:47:59,274 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 381 transitions. Word has length 48 [2022-10-17 10:47:59,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:59,274 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 381 transitions. [2022-10-17 10:47:59,274 INFO L496 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) [2022-10-17 10:47:59,274 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 381 transitions. [2022-10-17 10:47:59,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 10:47:59,275 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:59,275 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:59,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:47:59,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-17 10:47:59,489 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:59,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:59,490 INFO L85 PathProgramCache]: Analyzing trace with hash -169316457, now seen corresponding path program 1 times [2022-10-17 10:47:59,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:59,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890077904] [2022-10-17 10:47:59,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:59,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:59,498 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:47:59,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737073005] [2022-10-17 10:47:59,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:59,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:59,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:59,500 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:47:59,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-17 10:47:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:47:59,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:47:59,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:47:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-10-17 10:47:59,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:47:59,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:47:59,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890077904] [2022-10-17 10:47:59,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:47:59,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737073005] [2022-10-17 10:47:59,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737073005] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:47:59,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:47:59,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:47:59,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972166343] [2022-10-17 10:47:59,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:47:59,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:47:59,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:47:59,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:47:59,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:47:59,633 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) [2022-10-17 10:47:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:47:59,712 INFO L93 Difference]: Finished difference Result 496 states and 685 transitions. [2022-10-17 10:47:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:47:59,713 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 [2022-10-17 10:47:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:47:59,715 INFO L225 Difference]: With dead ends: 496 [2022-10-17 10:47:59,715 INFO L226 Difference]: Without dead ends: 253 [2022-10-17 10:47:59,716 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:47:59,717 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 23 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:47:59,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 107 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:47:59,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-10-17 10:47:59,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 251. [2022-10-17 10:47:59,732 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) [2022-10-17 10:47:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 340 transitions. [2022-10-17 10:47:59,734 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 340 transitions. Word has length 53 [2022-10-17 10:47:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:47:59,735 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 340 transitions. [2022-10-17 10:47:59,735 INFO L496 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) [2022-10-17 10:47:59,735 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 340 transitions. [2022-10-17 10:47:59,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-10-17 10:47:59,736 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:47:59,736 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:47:59,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:47:59,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-17 10:47:59,961 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:47:59,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:47:59,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1084763047, now seen corresponding path program 2 times [2022-10-17 10:47:59,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:47:59,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948088485] [2022-10-17 10:47:59,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:47:59,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:47:59,970 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:47:59,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064062897] [2022-10-17 10:47:59,970 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:47:59,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:47:59,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:47:59,971 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:47:59,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-17 10:48:00,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:48:00,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:48:00,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:48:00,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:00,094 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-10-17 10:48:00,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:48:00,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:00,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948088485] [2022-10-17 10:48:00,094 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:00,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064062897] [2022-10-17 10:48:00,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064062897] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:00,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:00,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:48:00,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413083399] [2022-10-17 10:48:00,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:00,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:48:00,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:00,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:48:00,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:48:00,096 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) [2022-10-17 10:48:00,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:00,315 INFO L93 Difference]: Finished difference Result 516 states and 716 transitions. [2022-10-17 10:48:00,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:48:00,316 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 [2022-10-17 10:48:00,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:00,318 INFO L225 Difference]: With dead ends: 516 [2022-10-17 10:48:00,318 INFO L226 Difference]: Without dead ends: 303 [2022-10-17 10:48:00,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:48:00,320 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 55 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:00,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 345 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:48:00,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-10-17 10:48:00,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 295. [2022-10-17 10:48:00,337 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) [2022-10-17 10:48:00,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 412 transitions. [2022-10-17 10:48:00,339 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 412 transitions. Word has length 53 [2022-10-17 10:48:00,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:00,340 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 412 transitions. [2022-10-17 10:48:00,340 INFO L496 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) [2022-10-17 10:48:00,340 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 412 transitions. [2022-10-17 10:48:00,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-10-17 10:48:00,341 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:00,341 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:00,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:00,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:00,561 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:00,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:00,562 INFO L85 PathProgramCache]: Analyzing trace with hash 275903367, now seen corresponding path program 1 times [2022-10-17 10:48:00,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:00,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354554341] [2022-10-17 10:48:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:00,570 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:00,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451999510] [2022-10-17 10:48:00,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:00,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:00,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:00,575 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:00,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-17 10:48:00,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:00,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:48:00,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:00,764 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:48:00,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:00,881 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:48:00,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:00,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354554341] [2022-10-17 10:48:00,881 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:00,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451999510] [2022-10-17 10:48:00,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451999510] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:00,881 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:00,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2022-10-17 10:48:00,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796140894] [2022-10-17 10:48:00,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:00,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-10-17 10:48:00,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:00,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-10-17 10:48:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-10-17 10:48:00,883 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) [2022-10-17 10:48:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:01,193 INFO L93 Difference]: Finished difference Result 533 states and 738 transitions. [2022-10-17 10:48:01,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:48:01,193 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 [2022-10-17 10:48:01,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:01,196 INFO L225 Difference]: With dead ends: 533 [2022-10-17 10:48:01,196 INFO L226 Difference]: Without dead ends: 323 [2022-10-17 10:48:01,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2022-10-17 10:48:01,198 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 50 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:01,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 469 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:48:01,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-10-17 10:48:01,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 305. [2022-10-17 10:48:01,215 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) [2022-10-17 10:48:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 424 transitions. [2022-10-17 10:48:01,218 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 424 transitions. Word has length 52 [2022-10-17 10:48:01,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:01,218 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 424 transitions. [2022-10-17 10:48:01,219 INFO L496 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) [2022-10-17 10:48:01,219 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 424 transitions. [2022-10-17 10:48:01,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-17 10:48:01,219 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:01,219 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:01,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:01,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:01,441 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:01,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash 726408517, now seen corresponding path program 1 times [2022-10-17 10:48:01,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:01,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430452144] [2022-10-17 10:48:01,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:01,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:01,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:01,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424929961] [2022-10-17 10:48:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:01,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:01,450 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:01,451 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:01,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-17 10:48:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:01,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 10:48:01,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:48:01,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:01,817 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-10-17 10:48:01,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:01,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430452144] [2022-10-17 10:48:01,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:01,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424929961] [2022-10-17 10:48:01,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424929961] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:01,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:01,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-10-17 10:48:01,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232749735] [2022-10-17 10:48:01,818 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:01,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-17 10:48:01,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:01,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-17 10:48:01,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:48:01,819 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) [2022-10-17 10:48:02,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:02,551 INFO L93 Difference]: Finished difference Result 606 states and 829 transitions. [2022-10-17 10:48:02,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-10-17 10:48:02,551 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 [2022-10-17 10:48:02,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:02,554 INFO L225 Difference]: With dead ends: 606 [2022-10-17 10:48:02,554 INFO L226 Difference]: Without dead ends: 392 [2022-10-17 10:48:02,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2022-10-17 10:48:02,557 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 190 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:02,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 774 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 580 Invalid, 0 Unknown, 70 Unchecked, 0.5s Time] [2022-10-17 10:48:02,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-10-17 10:48:02,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 364. [2022-10-17 10:48:02,577 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) [2022-10-17 10:48:02,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 502 transitions. [2022-10-17 10:48:02,581 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 502 transitions. Word has length 55 [2022-10-17 10:48:02,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:02,582 INFO L495 AbstractCegarLoop]: Abstraction has 364 states and 502 transitions. [2022-10-17 10:48:02,582 INFO L496 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) [2022-10-17 10:48:02,582 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 502 transitions. [2022-10-17 10:48:02,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-10-17 10:48:02,583 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:02,583 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:02,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:02,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:02,809 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:02,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:02,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1989972148, now seen corresponding path program 1 times [2022-10-17 10:48:02,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:02,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713218095] [2022-10-17 10:48:02,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:02,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:02,818 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:02,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1493785561] [2022-10-17 10:48:02,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:02,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:02,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:02,821 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:02,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-17 10:48:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:02,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:48:02,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-17 10:48:02,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-10-17 10:48:03,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:03,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713218095] [2022-10-17 10:48:03,083 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:03,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493785561] [2022-10-17 10:48:03,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493785561] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:03,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:03,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-10-17 10:48:03,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498666795] [2022-10-17 10:48:03,084 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:03,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:48:03,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:03,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:48:03,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:48:03,085 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) [2022-10-17 10:48:03,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:03,348 INFO L93 Difference]: Finished difference Result 706 states and 977 transitions. [2022-10-17 10:48:03,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:48:03,349 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 [2022-10-17 10:48:03,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:03,352 INFO L225 Difference]: With dead ends: 706 [2022-10-17 10:48:03,352 INFO L226 Difference]: Without dead ends: 382 [2022-10-17 10:48:03,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 105 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:48:03,354 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 71 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:03,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 459 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:48:03,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-10-17 10:48:03,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 363. [2022-10-17 10:48:03,372 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) [2022-10-17 10:48:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 496 transitions. [2022-10-17 10:48:03,375 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 496 transitions. Word has length 61 [2022-10-17 10:48:03,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:03,376 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 496 transitions. [2022-10-17 10:48:03,376 INFO L496 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) [2022-10-17 10:48:03,376 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 496 transitions. [2022-10-17 10:48:03,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-10-17 10:48:03,377 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:03,377 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:03,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-10-17 10:48:03,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-10-17 10:48:03,601 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:03,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash -681681031, now seen corresponding path program 1 times [2022-10-17 10:48:03,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:03,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246065929] [2022-10-17 10:48:03,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:03,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:03,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:03,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128508069] [2022-10-17 10:48:03,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:03,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:03,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:03,633 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:03,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-17 10:48:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:03,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:48:03,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:03,751 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-10-17 10:48:03,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:48:03,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:03,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246065929] [2022-10-17 10:48:03,752 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:03,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128508069] [2022-10-17 10:48:03,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128508069] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:03,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:03,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:48:03,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570486766] [2022-10-17 10:48:03,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:03,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:48:03,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:03,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:48:03,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:48:03,754 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) [2022-10-17 10:48:03,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:03,893 INFO L93 Difference]: Finished difference Result 683 states and 928 transitions. [2022-10-17 10:48:03,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:48:03,894 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 [2022-10-17 10:48:03,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:03,897 INFO L225 Difference]: With dead ends: 683 [2022-10-17 10:48:03,897 INFO L226 Difference]: Without dead ends: 369 [2022-10-17 10:48:03,898 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:48:03,899 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 41 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:03,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 341 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:48:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-10-17 10:48:03,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 359. [2022-10-17 10:48:03,918 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) [2022-10-17 10:48:03,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 481 transitions. [2022-10-17 10:48:03,921 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 481 transitions. Word has length 63 [2022-10-17 10:48:03,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:03,921 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 481 transitions. [2022-10-17 10:48:03,921 INFO L496 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) [2022-10-17 10:48:03,922 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 481 transitions. [2022-10-17 10:48:03,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-17 10:48:03,922 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:03,922 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:03,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:04,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:04,149 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:04,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:04,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1354749825, now seen corresponding path program 1 times [2022-10-17 10:48:04,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:04,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728946736] [2022-10-17 10:48:04,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:04,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:04,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:04,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1717066133] [2022-10-17 10:48:04,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:04,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:04,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:04,164 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:04,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-17 10:48:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:04,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:48:04,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-17 10:48:04,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-17 10:48:04,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:04,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728946736] [2022-10-17 10:48:04,482 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:04,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717066133] [2022-10-17 10:48:04,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717066133] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:04,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:04,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-10-17 10:48:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892752448] [2022-10-17 10:48:04,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:04,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:48:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:48:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:48:04,484 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) [2022-10-17 10:48:04,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:04,863 INFO L93 Difference]: Finished difference Result 442 states and 589 transitions. [2022-10-17 10:48:04,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 10:48:04,864 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 [2022-10-17 10:48:04,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:04,867 INFO L225 Difference]: With dead ends: 442 [2022-10-17 10:48:04,867 INFO L226 Difference]: Without dead ends: 441 [2022-10-17 10:48:04,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-10-17 10:48:04,868 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 124 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:04,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 569 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:48:04,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2022-10-17 10:48:04,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 418. [2022-10-17 10:48:04,895 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) [2022-10-17 10:48:04,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 572 transitions. [2022-10-17 10:48:04,908 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 572 transitions. Word has length 66 [2022-10-17 10:48:04,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:04,908 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 572 transitions. [2022-10-17 10:48:04,908 INFO L496 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) [2022-10-17 10:48:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 572 transitions. [2022-10-17 10:48:04,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-10-17 10:48:04,909 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:04,909 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:04,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:05,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-10-17 10:48:05,137 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting binomialCoefficientErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:05,138 INFO L85 PathProgramCache]: Analyzing trace with hash 952428439, now seen corresponding path program 1 times [2022-10-17 10:48:05,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:05,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286579882] [2022-10-17 10:48:05,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:05,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:05,146 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:05,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1063377725] [2022-10-17 10:48:05,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:05,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:05,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:05,148 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:05,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-17 10:48:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:05,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:48:05,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:05,333 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-10-17 10:48:05,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:48:05,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:05,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286579882] [2022-10-17 10:48:05,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:05,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063377725] [2022-10-17 10:48:05,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063377725] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:05,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:05,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:48:05,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8308907] [2022-10-17 10:48:05,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:05,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:48:05,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:05,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:48:05,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:48:05,336 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) [2022-10-17 10:48:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:05,512 INFO L93 Difference]: Finished difference Result 425 states and 573 transitions. [2022-10-17 10:48:05,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:48:05,512 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 [2022-10-17 10:48:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:05,515 INFO L225 Difference]: With dead ends: 425 [2022-10-17 10:48:05,516 INFO L226 Difference]: Without dead ends: 424 [2022-10-17 10:48:05,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:48:05,517 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 46 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:05,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 331 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:48:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-10-17 10:48:05,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 418. [2022-10-17 10:48:05,545 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) [2022-10-17 10:48:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 570 transitions. [2022-10-17 10:48:05,550 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 570 transitions. Word has length 67 [2022-10-17 10:48:05,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:05,551 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 570 transitions. [2022-10-17 10:48:05,551 INFO L496 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) [2022-10-17 10:48:05,551 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 570 transitions. [2022-10-17 10:48:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-10-17 10:48:05,552 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:05,552 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:05,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:05,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:05,770 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:05,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash -159097642, now seen corresponding path program 2 times [2022-10-17 10:48:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:05,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819281282] [2022-10-17 10:48:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:05,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:05,783 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:05,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327295415] [2022-10-17 10:48:05,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:48:05,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:05,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:05,785 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:05,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-17 10:48:05,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:48:05,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:48:05,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:48:05,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-17 10:48:06,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:06,184 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-10-17 10:48:06,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:06,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819281282] [2022-10-17 10:48:06,185 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:06,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327295415] [2022-10-17 10:48:06,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327295415] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:06,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:06,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-10-17 10:48:06,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274760827] [2022-10-17 10:48:06,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:06,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:48:06,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:06,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:48:06,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:48:06,186 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) [2022-10-17 10:48:06,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:06,587 INFO L93 Difference]: Finished difference Result 478 states and 628 transitions. [2022-10-17 10:48:06,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-17 10:48:06,588 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 [2022-10-17 10:48:06,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:06,592 INFO L225 Difference]: With dead ends: 478 [2022-10-17 10:48:06,592 INFO L226 Difference]: Without dead ends: 477 [2022-10-17 10:48:06,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2022-10-17 10:48:06,593 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 144 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:06,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 495 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:48:06,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-10-17 10:48:06,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 466. [2022-10-17 10:48:06,618 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) [2022-10-17 10:48:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 625 transitions. [2022-10-17 10:48:06,622 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 625 transitions. Word has length 71 [2022-10-17 10:48:06,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:06,623 INFO L495 AbstractCegarLoop]: Abstraction has 466 states and 625 transitions. [2022-10-17 10:48:06,623 INFO L496 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) [2022-10-17 10:48:06,623 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 625 transitions. [2022-10-17 10:48:06,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-10-17 10:48:06,624 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:06,624 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:06,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:06,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:06,838 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:06,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:06,838 INFO L85 PathProgramCache]: Analyzing trace with hash -927342394, now seen corresponding path program 1 times [2022-10-17 10:48:06,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:06,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337489756] [2022-10-17 10:48:06,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:06,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:06,846 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:06,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615940041] [2022-10-17 10:48:06,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:06,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:06,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:06,848 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:06,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-17 10:48:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:06,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:48:06,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:07,049 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-10-17 10:48:07,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:48:07,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:07,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337489756] [2022-10-17 10:48:07,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:07,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615940041] [2022-10-17 10:48:07,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615940041] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:07,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:07,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:48:07,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048693926] [2022-10-17 10:48:07,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:07,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:48:07,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:07,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:48:07,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:48:07,052 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) [2022-10-17 10:48:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:07,335 INFO L93 Difference]: Finished difference Result 875 states and 1185 transitions. [2022-10-17 10:48:07,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-10-17 10:48:07,336 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 [2022-10-17 10:48:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:07,339 INFO L225 Difference]: With dead ends: 875 [2022-10-17 10:48:07,339 INFO L226 Difference]: Without dead ends: 466 [2022-10-17 10:48:07,341 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:48:07,341 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 60 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:07,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 271 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:48:07,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2022-10-17 10:48:07,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 458. [2022-10-17 10:48:07,366 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) [2022-10-17 10:48:07,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 615 transitions. [2022-10-17 10:48:07,371 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 615 transitions. Word has length 76 [2022-10-17 10:48:07,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:07,371 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 615 transitions. [2022-10-17 10:48:07,371 INFO L496 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) [2022-10-17 10:48:07,372 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 615 transitions. [2022-10-17 10:48:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-10-17 10:48:07,372 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:07,373 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:07,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:07,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-10-17 10:48:07,589 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:07,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:07,590 INFO L85 PathProgramCache]: Analyzing trace with hash -960430689, now seen corresponding path program 1 times [2022-10-17 10:48:07,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:07,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340197809] [2022-10-17 10:48:07,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:07,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:07,599 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:07,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866319151] [2022-10-17 10:48:07,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:07,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:07,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:07,601 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:07,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-10-17 10:48:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:07,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:48:07,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-17 10:48:07,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:08,155 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 4 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-10-17 10:48:08,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:08,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340197809] [2022-10-17 10:48:08,155 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:08,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866319151] [2022-10-17 10:48:08,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866319151] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:08,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:08,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2022-10-17 10:48:08,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196613268] [2022-10-17 10:48:08,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:08,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-17 10:48:08,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:08,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-17 10:48:08,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-10-17 10:48:08,158 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) [2022-10-17 10:48:09,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:09,225 INFO L93 Difference]: Finished difference Result 538 states and 695 transitions. [2022-10-17 10:48:09,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-10-17 10:48:09,225 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 [2022-10-17 10:48:09,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:09,229 INFO L225 Difference]: With dead ends: 538 [2022-10-17 10:48:09,229 INFO L226 Difference]: Without dead ends: 537 [2022-10-17 10:48:09,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=196, Invalid=1210, Unknown=0, NotChecked=0, Total=1406 [2022-10-17 10:48:09,231 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 180 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:09,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 626 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 602 Invalid, 0 Unknown, 76 Unchecked, 0.5s Time] [2022-10-17 10:48:09,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2022-10-17 10:48:09,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 506. [2022-10-17 10:48:09,259 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) [2022-10-17 10:48:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 673 transitions. [2022-10-17 10:48:09,263 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 673 transitions. Word has length 79 [2022-10-17 10:48:09,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:09,263 INFO L495 AbstractCegarLoop]: Abstraction has 506 states and 673 transitions. [2022-10-17 10:48:09,263 INFO L496 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) [2022-10-17 10:48:09,263 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 673 transitions. [2022-10-17 10:48:09,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-10-17 10:48:09,264 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:09,264 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:09,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:09,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:09,473 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting factErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:09,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:09,474 INFO L85 PathProgramCache]: Analyzing trace with hash 291419757, now seen corresponding path program 1 times [2022-10-17 10:48:09,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:09,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983498434] [2022-10-17 10:48:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:09,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:09,479 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:09,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1701871207] [2022-10-17 10:48:09,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:09,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:09,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:09,483 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:09,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-10-17 10:48:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:09,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:48:09,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:09,595 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-17 10:48:09,595 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:48:09,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:09,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983498434] [2022-10-17 10:48:09,596 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:09,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701871207] [2022-10-17 10:48:09,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701871207] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:09,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:09,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:48:09,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765135516] [2022-10-17 10:48:09,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:09,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:48:09,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:09,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:48:09,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:48:09,598 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) [2022-10-17 10:48:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:09,677 INFO L93 Difference]: Finished difference Result 508 states and 676 transitions. [2022-10-17 10:48:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:48:09,678 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 [2022-10-17 10:48:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:09,682 INFO L225 Difference]: With dead ends: 508 [2022-10-17 10:48:09,682 INFO L226 Difference]: Without dead ends: 507 [2022-10-17 10:48:09,682 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:48:09,683 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 8 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:09,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 202 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:48:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-10-17 10:48:09,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 505. [2022-10-17 10:48:09,712 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) [2022-10-17 10:48:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 663 transitions. [2022-10-17 10:48:09,716 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 663 transitions. Word has length 80 [2022-10-17 10:48:09,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:09,717 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 663 transitions. [2022-10-17 10:48:09,717 INFO L496 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) [2022-10-17 10:48:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 663 transitions. [2022-10-17 10:48:09,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-10-17 10:48:09,719 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:09,720 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:09,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:09,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-10-17 10:48:09,933 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting binomialCoefficientErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:09,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1026169764, now seen corresponding path program 1 times [2022-10-17 10:48:09,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:09,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631031048] [2022-10-17 10:48:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:09,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:09,942 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:09,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451513722] [2022-10-17 10:48:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:09,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:09,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:09,949 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:09,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-10-17 10:48:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:09,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:48:10,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:10,032 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-10-17 10:48:10,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:10,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:10,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631031048] [2022-10-17 10:48:10,257 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:10,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451513722] [2022-10-17 10:48:10,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451513722] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:48:10,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:48:10,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2022-10-17 10:48:10,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563616161] [2022-10-17 10:48:10,257 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:10,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:48:10,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:10,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:48:10,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:48:10,258 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) [2022-10-17 10:48:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:10,341 INFO L93 Difference]: Finished difference Result 543 states and 720 transitions. [2022-10-17 10:48:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:48:10,341 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 [2022-10-17 10:48:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:10,345 INFO L225 Difference]: With dead ends: 543 [2022-10-17 10:48:10,345 INFO L226 Difference]: Without dead ends: 542 [2022-10-17 10:48:10,346 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:48:10,347 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 10 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:10,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 192 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:48:10,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-10-17 10:48:10,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 517. [2022-10-17 10:48:10,375 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) [2022-10-17 10:48:10,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 672 transitions. [2022-10-17 10:48:10,379 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 672 transitions. Word has length 84 [2022-10-17 10:48:10,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:10,379 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 672 transitions. [2022-10-17 10:48:10,379 INFO L496 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) [2022-10-17 10:48:10,379 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 672 transitions. [2022-10-17 10:48:10,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-10-17 10:48:10,381 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:10,381 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:10,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:10,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-10-17 10:48:10,595 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting binomialCoefficientErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:10,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1746491672, now seen corresponding path program 1 times [2022-10-17 10:48:10,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:10,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525916053] [2022-10-17 10:48:10,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:10,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:10,602 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:10,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [691279297] [2022-10-17 10:48:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:10,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:10,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:10,616 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:10,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-10-17 10:48:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:10,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:48:10,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:10,841 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-10-17 10:48:10,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:48:10,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:10,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525916053] [2022-10-17 10:48:10,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:10,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691279297] [2022-10-17 10:48:10,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691279297] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:10,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:10,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:48:10,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608789084] [2022-10-17 10:48:10,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:10,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:48:10,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:10,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:48:10,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:48:10,843 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) [2022-10-17 10:48:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:10,953 INFO L93 Difference]: Finished difference Result 519 states and 675 transitions. [2022-10-17 10:48:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:48:10,954 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 [2022-10-17 10:48:10,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:10,957 INFO L225 Difference]: With dead ends: 519 [2022-10-17 10:48:10,957 INFO L226 Difference]: Without dead ends: 518 [2022-10-17 10:48:10,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:48:10,958 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 21 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:10,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 204 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:48:10,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-10-17 10:48:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 495. [2022-10-17 10:48:11,007 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) [2022-10-17 10:48:11,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 642 transitions. [2022-10-17 10:48:11,011 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 642 transitions. Word has length 85 [2022-10-17 10:48:11,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:11,012 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 642 transitions. [2022-10-17 10:48:11,012 INFO L496 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) [2022-10-17 10:48:11,012 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 642 transitions. [2022-10-17 10:48:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-10-17 10:48:11,013 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:11,013 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:11,047 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:11,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:11,233 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting binomialCoefficientErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:11,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:11,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1693332954, now seen corresponding path program 2 times [2022-10-17 10:48:11,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:11,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402366953] [2022-10-17 10:48:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:11,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:11,241 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:11,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [773549333] [2022-10-17 10:48:11,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:48:11,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:11,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:11,247 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:11,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-10-17 10:48:11,306 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:48:11,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:48:11,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:48:11,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:11,669 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-10-17 10:48:11,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:48:11,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:11,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402366953] [2022-10-17 10:48:11,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:11,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773549333] [2022-10-17 10:48:11,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773549333] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:11,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:11,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:48:11,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721069503] [2022-10-17 10:48:11,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:11,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:48:11,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:11,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:48:11,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:48:11,671 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) [2022-10-17 10:48:11,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:11,779 INFO L93 Difference]: Finished difference Result 497 states and 645 transitions. [2022-10-17 10:48:11,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:48:11,780 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 [2022-10-17 10:48:11,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:11,784 INFO L225 Difference]: With dead ends: 497 [2022-10-17 10:48:11,784 INFO L226 Difference]: Without dead ends: 495 [2022-10-17 10:48:11,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:48:11,785 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 26 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:11,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 191 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:48:11,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-10-17 10:48:11,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 432. [2022-10-17 10:48:11,815 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) [2022-10-17 10:48:11,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 524 transitions. [2022-10-17 10:48:11,818 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 524 transitions. Word has length 86 [2022-10-17 10:48:11,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:11,820 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 524 transitions. [2022-10-17 10:48:11,821 INFO L496 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) [2022-10-17 10:48:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 524 transitions. [2022-10-17 10:48:11,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-10-17 10:48:11,822 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:11,822 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:11,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:12,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:12,049 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:12,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:12,049 INFO L85 PathProgramCache]: Analyzing trace with hash 253172159, now seen corresponding path program 2 times [2022-10-17 10:48:12,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:12,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661152203] [2022-10-17 10:48:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:12,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:12,058 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:12,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1052380788] [2022-10-17 10:48:12,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:48:12,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:12,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:12,060 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:12,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-10-17 10:48:12,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:48:12,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:48:12,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:48:12,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:12,296 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-10-17 10:48:12,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 53 proven. 10 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-10-17 10:48:12,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:12,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661152203] [2022-10-17 10:48:12,531 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:12,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052380788] [2022-10-17 10:48:12,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052380788] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:12,531 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:12,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 18 [2022-10-17 10:48:12,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619671547] [2022-10-17 10:48:12,532 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:12,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-17 10:48:12,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:12,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-17 10:48:12,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-10-17 10:48:12,533 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) [2022-10-17 10:48:13,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:13,195 INFO L93 Difference]: Finished difference Result 831 states and 1028 transitions. [2022-10-17 10:48:13,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-10-17 10:48:13,213 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 [2022-10-17 10:48:13,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:13,220 INFO L225 Difference]: With dead ends: 831 [2022-10-17 10:48:13,220 INFO L226 Difference]: Without dead ends: 459 [2022-10-17 10:48:13,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 158 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2022-10-17 10:48:13,224 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 113 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:13,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 647 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:48:13,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-10-17 10:48:13,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2022-10-17 10:48:13,272 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) [2022-10-17 10:48:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 521 transitions. [2022-10-17 10:48:13,275 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 521 transitions. Word has length 89 [2022-10-17 10:48:13,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:13,275 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 521 transitions. [2022-10-17 10:48:13,275 INFO L496 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) [2022-10-17 10:48:13,275 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 521 transitions. [2022-10-17 10:48:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-10-17 10:48:13,277 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:13,277 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:13,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:13,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:13,505 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:13,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:13,505 INFO L85 PathProgramCache]: Analyzing trace with hash 929332397, now seen corresponding path program 1 times [2022-10-17 10:48:13,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:13,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601932382] [2022-10-17 10:48:13,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:13,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:13,521 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:13,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [251266702] [2022-10-17 10:48:13,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:13,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:13,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:13,522 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:13,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-10-17 10:48:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:13,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:48:13,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:13,688 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-10-17 10:48:13,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:13,860 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-10-17 10:48:13,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:13,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601932382] [2022-10-17 10:48:13,861 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:13,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251266702] [2022-10-17 10:48:13,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251266702] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:13,861 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:13,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-10-17 10:48:13,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882138495] [2022-10-17 10:48:13,862 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:13,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:48:13,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:13,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:48:13,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:48:13,863 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) [2022-10-17 10:48:14,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:14,335 INFO L93 Difference]: Finished difference Result 585 states and 719 transitions. [2022-10-17 10:48:14,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-17 10:48:14,335 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 [2022-10-17 10:48:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:14,340 INFO L225 Difference]: With dead ends: 585 [2022-10-17 10:48:14,340 INFO L226 Difference]: Without dead ends: 582 [2022-10-17 10:48:14,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2022-10-17 10:48:14,341 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 138 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:14,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 467 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:48:14,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-10-17 10:48:14,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 554. [2022-10-17 10:48:14,382 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) [2022-10-17 10:48:14,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 676 transitions. [2022-10-17 10:48:14,385 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 676 transitions. Word has length 106 [2022-10-17 10:48:14,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:14,385 INFO L495 AbstractCegarLoop]: Abstraction has 554 states and 676 transitions. [2022-10-17 10:48:14,385 INFO L496 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) [2022-10-17 10:48:14,386 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 676 transitions. [2022-10-17 10:48:14,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-10-17 10:48:14,387 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:14,387 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:14,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:14,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-10-17 10:48:14,609 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:14,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:14,609 INFO L85 PathProgramCache]: Analyzing trace with hash 2016742028, now seen corresponding path program 2 times [2022-10-17 10:48:14,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:14,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64411229] [2022-10-17 10:48:14,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:14,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:14,616 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:14,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512063073] [2022-10-17 10:48:14,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:48:14,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:14,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:14,620 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:14,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-10-17 10:48:14,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:48:14,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:48:14,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:48:14,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-10-17 10:48:14,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:48:14,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:14,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64411229] [2022-10-17 10:48:14,757 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:14,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512063073] [2022-10-17 10:48:14,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512063073] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:48:14,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:48:14,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:48:14,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137588494] [2022-10-17 10:48:14,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:48:14,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:48:14,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:14,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:48:14,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:48:14,760 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) [2022-10-17 10:48:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:14,874 INFO L93 Difference]: Finished difference Result 878 states and 1076 transitions. [2022-10-17 10:48:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:48:14,874 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 [2022-10-17 10:48:14,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:14,878 INFO L225 Difference]: With dead ends: 878 [2022-10-17 10:48:14,878 INFO L226 Difference]: Without dead ends: 487 [2022-10-17 10:48:14,879 INFO L412 NwaCegarLoop]: 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 [2022-10-17 10:48:14,880 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:14,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 236 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:48:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-10-17 10:48:14,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 486. [2022-10-17 10:48:14,908 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) [2022-10-17 10:48:14,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 579 transitions. [2022-10-17 10:48:14,910 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 579 transitions. Word has length 112 [2022-10-17 10:48:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:14,910 INFO L495 AbstractCegarLoop]: Abstraction has 486 states and 579 transitions. [2022-10-17 10:48:14,911 INFO L496 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) [2022-10-17 10:48:14,911 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 579 transitions. [2022-10-17 10:48:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-10-17 10:48:14,913 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:14,913 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:14,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:15,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:15,133 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:15,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:15,133 INFO L85 PathProgramCache]: Analyzing trace with hash -158640522, now seen corresponding path program 1 times [2022-10-17 10:48:15,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:15,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955133030] [2022-10-17 10:48:15,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:15,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:15,140 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:15,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1040973488] [2022-10-17 10:48:15,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:15,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:15,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:15,141 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:15,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-10-17 10:48:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:15,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-17 10:48:15,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:15,335 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-10-17 10:48:15,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:16,151 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-10-17 10:48:16,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:16,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955133030] [2022-10-17 10:48:16,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:16,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040973488] [2022-10-17 10:48:16,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040973488] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:16,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:16,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2022-10-17 10:48:16,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916816097] [2022-10-17 10:48:16,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:16,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-17 10:48:16,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:16,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-17 10:48:16,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-10-17 10:48:16,154 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) [2022-10-17 10:48:17,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:17,367 INFO L93 Difference]: Finished difference Result 874 states and 1068 transitions. [2022-10-17 10:48:17,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-10-17 10:48:17,368 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 [2022-10-17 10:48:17,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:17,371 INFO L225 Difference]: With dead ends: 874 [2022-10-17 10:48:17,371 INFO L226 Difference]: Without dead ends: 529 [2022-10-17 10:48:17,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=859, Unknown=0, NotChecked=0, Total=992 [2022-10-17 10:48:17,374 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 118 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:17,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 808 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 587 Invalid, 0 Unknown, 59 Unchecked, 0.6s Time] [2022-10-17 10:48:17,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2022-10-17 10:48:17,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 508. [2022-10-17 10:48:17,403 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) [2022-10-17 10:48:17,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 601 transitions. [2022-10-17 10:48:17,406 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 601 transitions. Word has length 114 [2022-10-17 10:48:17,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:17,406 INFO L495 AbstractCegarLoop]: Abstraction has 508 states and 601 transitions. [2022-10-17 10:48:17,407 INFO L496 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) [2022-10-17 10:48:17,407 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 601 transitions. [2022-10-17 10:48:17,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-10-17 10:48:17,408 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:17,409 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:17,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:17,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-10-17 10:48:17,633 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:17,633 INFO L85 PathProgramCache]: Analyzing trace with hash 703817343, now seen corresponding path program 1 times [2022-10-17 10:48:17,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:17,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121167484] [2022-10-17 10:48:17,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:17,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:17,643 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:17,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602223233] [2022-10-17 10:48:17,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:17,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:17,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:17,645 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:17,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-10-17 10:48:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:17,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-17 10:48:17,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 82 proven. 22 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-10-17 10:48:18,033 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:18,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:18,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121167484] [2022-10-17 10:48:18,191 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:18,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602223233] [2022-10-17 10:48:18,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602223233] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-17 10:48:18,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:48:18,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2022-10-17 10:48:18,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432695423] [2022-10-17 10:48:18,191 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:18,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-17 10:48:18,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:18,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-17 10:48:18,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:48:18,192 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) [2022-10-17 10:48:20,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-10-17 10:48:21,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:21,055 INFO L93 Difference]: Finished difference Result 1053 states and 1314 transitions. [2022-10-17 10:48:21,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 10:48:21,056 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 [2022-10-17 10:48:21,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:21,061 INFO L225 Difference]: With dead ends: 1053 [2022-10-17 10:48:21,061 INFO L226 Difference]: Without dead ends: 715 [2022-10-17 10:48:21,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-10-17 10:48:21,064 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 82 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:21,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 819 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 980 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2022-10-17 10:48:21,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-10-17 10:48:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 612. [2022-10-17 10:48:21,117 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) [2022-10-17 10:48:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 744 transitions. [2022-10-17 10:48:21,120 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 744 transitions. Word has length 119 [2022-10-17 10:48:21,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:21,121 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 744 transitions. [2022-10-17 10:48:21,121 INFO L496 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) [2022-10-17 10:48:21,121 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 744 transitions. [2022-10-17 10:48:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-10-17 10:48:21,123 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:21,123 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:21,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:21,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-10-17 10:48:21,341 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:21,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:21,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1295624958, now seen corresponding path program 2 times [2022-10-17 10:48:21,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:21,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277134950] [2022-10-17 10:48:21,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:21,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:21,350 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:21,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [521983451] [2022-10-17 10:48:21,351 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:48:21,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:21,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:21,352 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:21,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-10-17 10:48:21,400 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:48:21,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:48:21,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 14 conjunts are in the unsatisfiable core [2022-10-17 10:48:21,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:21,590 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 97 proven. 25 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-10-17 10:48:21,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:21,854 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 97 proven. 25 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-10-17 10:48:21,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:21,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277134950] [2022-10-17 10:48:21,854 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:21,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521983451] [2022-10-17 10:48:21,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521983451] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:21,855 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:21,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2022-10-17 10:48:21,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491003128] [2022-10-17 10:48:21,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:21,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-17 10:48:21,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:21,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-17 10:48:21,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:48:21,858 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) [2022-10-17 10:48:22,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:22,484 INFO L93 Difference]: Finished difference Result 1187 states and 1470 transitions. [2022-10-17 10:48:22,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 10:48:22,488 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 [2022-10-17 10:48:22,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:22,496 INFO L225 Difference]: With dead ends: 1187 [2022-10-17 10:48:22,496 INFO L226 Difference]: Without dead ends: 672 [2022-10-17 10:48:22,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 222 SyntacticMatches, 12 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2022-10-17 10:48:22,499 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 98 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:22,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 536 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:48:22,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-10-17 10:48:22,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 617. [2022-10-17 10:48:22,538 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) [2022-10-17 10:48:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 743 transitions. [2022-10-17 10:48:22,541 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 743 transitions. Word has length 124 [2022-10-17 10:48:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:22,542 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 743 transitions. [2022-10-17 10:48:22,542 INFO L496 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) [2022-10-17 10:48:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 743 transitions. [2022-10-17 10:48:22,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-10-17 10:48:22,544 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:22,544 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:22,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:22,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-10-17 10:48:22,757 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting binomialCoefficientErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:22,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:22,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1116473682, now seen corresponding path program 1 times [2022-10-17 10:48:22,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:22,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325926340] [2022-10-17 10:48:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:22,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:22,770 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:22,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1342943799] [2022-10-17 10:48:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:22,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:22,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:22,771 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:22,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-10-17 10:48:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:48:22,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-17 10:48:22,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:22,935 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-10-17 10:48:22,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:23,124 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-10-17 10:48:23,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:23,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325926340] [2022-10-17 10:48:23,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:23,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342943799] [2022-10-17 10:48:23,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342943799] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:23,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:23,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-10-17 10:48:23,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512174248] [2022-10-17 10:48:23,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:23,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:48:23,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:23,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:48:23,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:48:23,126 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) [2022-10-17 10:48:23,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:23,465 INFO L93 Difference]: Finished difference Result 623 states and 744 transitions. [2022-10-17 10:48:23,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-10-17 10:48:23,466 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 [2022-10-17 10:48:23,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:23,470 INFO L225 Difference]: With dead ends: 623 [2022-10-17 10:48:23,470 INFO L226 Difference]: Without dead ends: 622 [2022-10-17 10:48:23,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-10-17 10:48:23,471 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 146 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:23,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 377 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:48:23,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-10-17 10:48:23,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 617. [2022-10-17 10:48:23,516 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) [2022-10-17 10:48:23,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 741 transitions. [2022-10-17 10:48:23,519 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 741 transitions. Word has length 125 [2022-10-17 10:48:23,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:23,520 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 741 transitions. [2022-10-17 10:48:23,520 INFO L496 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) [2022-10-17 10:48:23,520 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 741 transitions. [2022-10-17 10:48:23,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-10-17 10:48:23,522 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:23,522 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:23,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:23,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-10-17 10:48:23,737 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:23,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:23,737 INFO L85 PathProgramCache]: Analyzing trace with hash -282687370, now seen corresponding path program 2 times [2022-10-17 10:48:23,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:23,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189560411] [2022-10-17 10:48:23,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:23,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:23,745 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:23,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516535136] [2022-10-17 10:48:23,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:48:23,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:23,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:23,747 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:23,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-10-17 10:48:23,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:48:23,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:48:23,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:48:23,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:23,955 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 173 proven. 7 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-10-17 10:48:23,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:48:24,103 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 88 proven. 28 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2022-10-17 10:48:24,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-17 10:48:24,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189560411] [2022-10-17 10:48:24,103 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-17 10:48:24,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516535136] [2022-10-17 10:48:24,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516535136] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:48:24,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:48:24,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2022-10-17 10:48:24,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832521075] [2022-10-17 10:48:24,104 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:48:24,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:48:24,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-17 10:48:24,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:48:24,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:48:24,106 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) [2022-10-17 10:48:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:48:24,352 INFO L93 Difference]: Finished difference Result 1067 states and 1314 transitions. [2022-10-17 10:48:24,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:48:24,353 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 [2022-10-17 10:48:24,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:48:24,357 INFO L225 Difference]: With dead ends: 1067 [2022-10-17 10:48:24,357 INFO L226 Difference]: Without dead ends: 622 [2022-10-17 10:48:24,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 250 SyntacticMatches, 8 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-10-17 10:48:24,360 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 67 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:48:24,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 374 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:48:24,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2022-10-17 10:48:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 607. [2022-10-17 10:48:24,407 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) [2022-10-17 10:48:24,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 727 transitions. [2022-10-17 10:48:24,410 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 727 transitions. Word has length 134 [2022-10-17 10:48:24,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:48:24,410 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 727 transitions. [2022-10-17 10:48:24,410 INFO L496 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) [2022-10-17 10:48:24,410 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 727 transitions. [2022-10-17 10:48:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-10-17 10:48:24,412 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:48:24,412 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:48:24,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-10-17 10:48:24,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-10-17 10:48:24,627 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [factErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, factErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2022-10-17 10:48:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:48:24,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1601794137, now seen corresponding path program 3 times [2022-10-17 10:48:24,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 10:48:24,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016037413] [2022-10-17 10:48:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:48:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 10:48:24,635 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-17 10:48:24,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [494053351] [2022-10-17 10:48:24,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-17 10:48:24,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-17 10:48:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:48:24,637 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-17 10:48:24,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e423294-7e6e-4c57-a752-b04e5fa6157f/bin/uautomizer-J5u9QxTXDZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-10-17 10:48:24,686 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-10-17 10:48:24,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:48:24,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-17 10:48:24,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:48:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 95 proven. 4 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-10-17 10:48:24,836 INFO L328 TraceCheckSpWp]: Computing backward predicates...