./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8 --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 93e64a210ad8295ef3e6c8bf5a4996e01ec752ae44f5068490e5115d4dda29b5 --- 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-2329fc7 [2022-12-13 19:04:37,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:04:37,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:04:37,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:04:37,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:04:37,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:04:37,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:04:37,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:04:37,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:04:37,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:04:37,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:04:37,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:04:37,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:04:37,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:04:37,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:04:37,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:04:37,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:04:37,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:04:37,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:04:37,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:04:37,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:04:37,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:04:37,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:04:37,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:04:37,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:04:37,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:04:37,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:04:37,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:04:37,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:04:37,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:04:37,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:04:37,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:04:37,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:04:37,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:04:37,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:04:37,063 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:04:37,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:04:37,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:04:37,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:04:37,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:04:37,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:04:37,066 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-12-13 19:04:37,095 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:04:37,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:04:37,096 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:04:37,096 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:04:37,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:04:37,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:04:37,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:04:37,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:04:37,097 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:04:37,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:04:37,098 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:04:37,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:04:37,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:04:37,098 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:04:37,098 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:04:37,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:04:37,099 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:04:37,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:04:37,099 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:04:37,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:04:37,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:04:37,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:04:37,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:04:37,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:04:37,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:04:37,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:04:37,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:04:37,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:04:37,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:04:37,101 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:04:37,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:04:37,101 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:04:37,101 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:04:37,101 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:04:37,102 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93e64a210ad8295ef3e6c8bf5a4996e01ec752ae44f5068490e5115d4dda29b5 [2022-12-13 19:04:37,277 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:04:37,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:04:37,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:04:37,295 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:04:37,295 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:04:37,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/termination-numeric/EvenOdd01-2.c [2022-12-13 19:04:39,861 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:04:40,014 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:04:40,014 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/sv-benchmarks/c/termination-numeric/EvenOdd01-2.c [2022-12-13 19:04:40,019 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/data/3deab5a3e/0536a4d4315544148ccbcad44f918cff/FLAG55e1dac79 [2022-12-13 19:04:40,033 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/data/3deab5a3e/0536a4d4315544148ccbcad44f918cff [2022-12-13 19:04:40,035 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:04:40,036 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:04:40,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:04:40,038 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:04:40,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:04:40,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34538072 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40, skipping insertion in model container [2022-12-13 19:04:40,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:04:40,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:04:40,186 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/sv-benchmarks/c/termination-numeric/EvenOdd01-2.c[938,951] [2022-12-13 19:04:40,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:04:40,194 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:04:40,204 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/sv-benchmarks/c/termination-numeric/EvenOdd01-2.c[938,951] [2022-12-13 19:04:40,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:04:40,214 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:04:40,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40 WrapperNode [2022-12-13 19:04:40,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:04:40,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:04:40,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:04:40,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:04:40,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,236 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2022-12-13 19:04:40,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:04:40,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:04:40,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:04:40,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:04:40,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,245 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,246 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,247 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:04:40,249 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:04:40,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:04:40,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:04:40,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (1/1) ... [2022-12-13 19:04:40,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:04:40,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:40,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:04:40,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:04:40,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:04:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2022-12-13 19:04:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2022-12-13 19:04:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:04:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2022-12-13 19:04:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2022-12-13 19:04:40,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:04:40,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:04:40,352 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:04:40,354 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:04:40,455 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:04:40,462 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:04:40,463 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 19:04:40,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:04:40 BoogieIcfgContainer [2022-12-13 19:04:40,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:04:40,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:04:40,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:04:40,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:04:40,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:04:40" (1/3) ... [2022-12-13 19:04:40,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3958d613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:04:40, skipping insertion in model container [2022-12-13 19:04:40,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:04:40" (2/3) ... [2022-12-13 19:04:40,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3958d613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:04:40, skipping insertion in model container [2022-12-13 19:04:40,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:04:40" (3/3) ... [2022-12-13 19:04:40,475 INFO L112 eAbstractionObserver]: Analyzing ICFG EvenOdd01-2.c [2022-12-13 19:04:40,496 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:04:40,496 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-12-13 19:04:40,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:04:40,540 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6057b9e9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:04:40,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-13 19:04:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 19:04:40,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 19:04:40,551 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:04:40,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:40,552 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:04:40,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:40,557 INFO L85 PathProgramCache]: Analyzing trace with hash -592993799, now seen corresponding path program 1 times [2022-12-13 19:04:40,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:40,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757512730] [2022-12-13 19:04:40,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:40,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:40,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:40,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757512730] [2022-12-13 19:04:40,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757512730] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:04:40,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:04:40,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:04:40,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686454791] [2022-12-13 19:04:40,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:04:40,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:04:40,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:40,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:04:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:04:40,808 INFO L87 Difference]: Start difference. First operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:40,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:04:40,894 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2022-12-13 19:04:40,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:04:40,897 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 19:04:40,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:04:40,904 INFO L225 Difference]: With dead ends: 51 [2022-12-13 19:04:40,905 INFO L226 Difference]: Without dead ends: 27 [2022-12-13 19:04:40,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:04:40,911 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 23 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:04:40,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 113 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:04:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-12-13 19:04:40,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-12-13 19:04:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 20 states have internal predecessors, (21), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:40,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-12-13 19:04:40,946 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 8 [2022-12-13 19:04:40,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:04:40,947 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-12-13 19:04:40,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:40,947 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-12-13 19:04:40,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-12-13 19:04:40,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:04:40,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:40,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:04:40,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting isOddErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:04:40,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:40,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1202938527, now seen corresponding path program 1 times [2022-12-13 19:04:40,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:40,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192136963] [2022-12-13 19:04:40,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:40,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:41,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192136963] [2022-12-13 19:04:41,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192136963] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:04:41,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:04:41,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:04:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148128161] [2022-12-13 19:04:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:04:41,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:04:41,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:04:41,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 19:04:41,004 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:41,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:04:41,039 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-12-13 19:04:41,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:04:41,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-12-13 19:04:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:04:41,040 INFO L225 Difference]: With dead ends: 27 [2022-12-13 19:04:41,040 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 19:04:41,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:04:41,042 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:04:41,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 50 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:04:41,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 19:04:41,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-12-13 19:04:41,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 21 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:41,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2022-12-13 19:04:41,048 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 9 [2022-12-13 19:04:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:04:41,048 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2022-12-13 19:04:41,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2022-12-13 19:04:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 19:04:41,049 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:04:41,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:41,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:04:41,050 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:04:41,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:41,051 INFO L85 PathProgramCache]: Analyzing trace with hash 708932889, now seen corresponding path program 1 times [2022-12-13 19:04:41,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:41,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406903549] [2022-12-13 19:04:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:41,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:41,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:41,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:41,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:41,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406903549] [2022-12-13 19:04:41,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406903549] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:04:41,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:04:41,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:04:41,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809284895] [2022-12-13 19:04:41,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:04:41,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:04:41,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:41,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:04:41,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:04:41,150 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-12-13 19:04:41,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:04:41,232 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2022-12-13 19:04:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:04:41,233 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 14 [2022-12-13 19:04:41,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:04:41,234 INFO L225 Difference]: With dead ends: 34 [2022-12-13 19:04:41,234 INFO L226 Difference]: Without dead ends: 33 [2022-12-13 19:04:41,234 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 [2022-12-13 19:04:41,235 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:04:41,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 43 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:04:41,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-13 19:04:41,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-12-13 19:04:41,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 25 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2022-12-13 19:04:41,242 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 14 [2022-12-13 19:04:41,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:04:41,243 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2022-12-13 19:04:41,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-12-13 19:04:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2022-12-13 19:04:41,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-12-13 19:04:41,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:04:41,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:41,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:04:41,244 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:04:41,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash 502083121, now seen corresponding path program 1 times [2022-12-13 19:04:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:41,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563444996] [2022-12-13 19:04:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:41,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:41,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563444996] [2022-12-13 19:04:41,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563444996] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:04:41,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:04:41,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 19:04:41,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340364292] [2022-12-13 19:04:41,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:04:41,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 19:04:41,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:41,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 19:04:41,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 19:04:41,334 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-12-13 19:04:41,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:04:41,391 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2022-12-13 19:04:41,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 19:04:41,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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 15 [2022-12-13 19:04:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:04:41,392 INFO L225 Difference]: With dead ends: 30 [2022-12-13 19:04:41,392 INFO L226 Difference]: Without dead ends: 28 [2022-12-13 19:04:41,393 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 [2022-12-13 19:04:41,393 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 15 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 19:04:41,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 14 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 19:04:41,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-13 19:04:41,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-12-13 19:04:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:41,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-12-13 19:04:41,398 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2022-12-13 19:04:41,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:04:41,398 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-12-13 19:04:41,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 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) [2022-12-13 19:04:41,398 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-12-13 19:04:41,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 19:04:41,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:04:41,399 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:04:41,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:04:41,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:04:41,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:41,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1700150087, now seen corresponding path program 1 times [2022-12-13 19:04:41,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:41,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890316801] [2022-12-13 19:04:41,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:41,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:41,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:41,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:41,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890316801] [2022-12-13 19:04:41,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890316801] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:41,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893123926] [2022-12-13 19:04:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:41,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:41,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:41,502 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:41,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:04:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:41,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 19:04:41,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:41,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:04:41,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:41,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893123926] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:04:41,699 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:04:41,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2022-12-13 19:04:41,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546506309] [2022-12-13 19:04:41,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:04:41,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 19:04:41,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:41,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 19:04:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-12-13 19:04:41,700 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:41,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:04:41,811 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2022-12-13 19:04:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 19:04:41,812 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-12-13 19:04:41,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:04:41,813 INFO L225 Difference]: With dead ends: 50 [2022-12-13 19:04:41,813 INFO L226 Difference]: Without dead ends: 48 [2022-12-13 19:04:41,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-12-13 19:04:41,815 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 40 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:04:41,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 46 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:04:41,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-13 19:04:41,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2022-12-13 19:04:41,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 37 states have (on average 1.054054054054054) internal successors, (39), 38 states have internal predecessors, (39), 7 states have call successors, (7), 7 states have call predecessors, (7), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2022-12-13 19:04:41,824 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 20 [2022-12-13 19:04:41,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:04:41,824 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2022-12-13 19:04:41,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 10 states have internal predecessors, (32), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:41,825 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2022-12-13 19:04:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 19:04:41,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:04:41,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:04:41,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:04:42,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:42,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:04:42,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:42,030 INFO L85 PathProgramCache]: Analyzing trace with hash 662928821, now seen corresponding path program 1 times [2022-12-13 19:04:42,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:42,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368326743] [2022-12-13 19:04:42,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:42,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:42,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:42,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368326743] [2022-12-13 19:04:42,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368326743] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:42,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646885863] [2022-12-13 19:04:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:42,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:42,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:42,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:42,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:04:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:42,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 19:04:42,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:42,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:04:42,605 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:42,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646885863] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:04:42,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:04:42,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2022-12-13 19:04:42,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603403836] [2022-12-13 19:04:42,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:04:42,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 19:04:42,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:42,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 19:04:42,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2022-12-13 19:04:42,608 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:42,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:04:42,849 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2022-12-13 19:04:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 19:04:42,850 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-12-13 19:04:42,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:04:42,851 INFO L225 Difference]: With dead ends: 92 [2022-12-13 19:04:42,851 INFO L226 Difference]: Without dead ends: 90 [2022-12-13 19:04:42,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=252, Invalid=1308, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 19:04:42,853 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 165 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 19:04:42,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 44 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 19:04:42,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-12-13 19:04:42,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2022-12-13 19:04:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 72 states have (on average 1.0277777777777777) internal successors, (74), 73 states have internal predecessors, (74), 14 states have call successors, (14), 14 states have call predecessors, (14), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:42,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions. [2022-12-13 19:04:42,864 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 38 [2022-12-13 19:04:42,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:04:42,865 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions. [2022-12-13 19:04:42,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.48) internal successors, (62), 16 states have internal predecessors, (62), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:42,865 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions. [2022-12-13 19:04:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 19:04:42,867 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:04:42,867 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1] [2022-12-13 19:04:42,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:04:43,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:43,069 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:04:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash -175214899, now seen corresponding path program 2 times [2022-12-13 19:04:43,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:43,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134258936] [2022-12-13 19:04:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:43,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:43,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134258936] [2022-12-13 19:04:43,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134258936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118470639] [2022-12-13 19:04:43,634 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:04:43,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:43,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:43,635 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:43,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:04:43,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:04:43,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:04:43,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 28 conjunts are in the unsatisfiable core [2022-12-13 19:04:43,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:43,782 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:43,782 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:04:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 0 proven. 204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:44,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118470639] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:04:44,292 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:04:44,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 55 [2022-12-13 19:04:44,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498490085] [2022-12-13 19:04:44,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:04:44,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-12-13 19:04:44,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:44,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-12-13 19:04:44,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2022-12-13 19:04:44,295 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:44,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:04:44,895 INFO L93 Difference]: Finished difference Result 170 states and 181 transitions. [2022-12-13 19:04:44,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 19:04:44,896 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2022-12-13 19:04:44,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:04:44,897 INFO L225 Difference]: With dead ends: 170 [2022-12-13 19:04:44,897 INFO L226 Difference]: Without dead ends: 168 [2022-12-13 19:04:44,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1737 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=970, Invalid=5510, Unknown=0, NotChecked=0, Total=6480 [2022-12-13 19:04:44,900 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 280 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:04:44,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 86 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 19:04:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-12-13 19:04:44,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2022-12-13 19:04:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 137 states have (on average 1.0145985401459854) internal successors, (139), 138 states have internal predecessors, (139), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions. [2022-12-13 19:04:44,918 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 80 [2022-12-13 19:04:44,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:04:44,919 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions. [2022-12-13 19:04:44,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.490566037735849) internal successors, (132), 30 states have internal predecessors, (132), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions. [2022-12-13 19:04:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 19:04:44,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:04:44,922 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1] [2022-12-13 19:04:44,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 19:04:45,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-13 19:04:45,124 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:04:45,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:45,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1525318463, now seen corresponding path program 2 times [2022-12-13 19:04:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:45,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169272325] [2022-12-13 19:04:45,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:45,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:46,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169272325] [2022-12-13 19:04:46,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169272325] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:46,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046128933] [2022-12-13 19:04:46,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 19:04:46,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:46,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:46,414 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:46,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 19:04:46,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 19:04:46,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:04:46,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 54 conjunts are in the unsatisfiable core [2022-12-13 19:04:46,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:46,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:04:48,034 INFO L134 CoverageAnalysis]: Checked inductivity of 912 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:48,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046128933] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:04:48,034 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:04:48,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54, 54] total 107 [2022-12-13 19:04:48,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232395000] [2022-12-13 19:04:48,035 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:04:48,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-12-13 19:04:48,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:04:48,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-12-13 19:04:48,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2022-12-13 19:04:48,044 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:49,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:04:49,763 INFO L93 Difference]: Finished difference Result 332 states and 357 transitions. [2022-12-13 19:04:49,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-12-13 19:04:49,764 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2022-12-13 19:04:49,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:04:49,766 INFO L225 Difference]: With dead ends: 332 [2022-12-13 19:04:49,766 INFO L226 Difference]: Without dead ends: 330 [2022-12-13 19:04:49,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2022-12-13 19:04:49,771 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 970 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 720 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:04:49,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 88 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 720 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 19:04:49,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2022-12-13 19:04:49,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2022-12-13 19:04:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 272 states have (on average 1.0073529411764706) internal successors, (274), 273 states have internal predecessors, (274), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 328 transitions. [2022-12-13 19:04:49,788 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 328 transitions. Word has length 158 [2022-12-13 19:04:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:04:49,788 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 328 transitions. [2022-12-13 19:04:49,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 2.4952380952380953) internal successors, (262), 56 states have internal predecessors, (262), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:04:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 328 transitions. [2022-12-13 19:04:49,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2022-12-13 19:04:49,792 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:04:49,792 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1] [2022-12-13 19:04:49,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 19:04:49,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:49,994 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:04:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:04:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash 703683301, now seen corresponding path program 3 times [2022-12-13 19:04:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:04:49,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012850863] [2022-12-13 19:04:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:04:49,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:04:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:04:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:04:53,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012850863] [2022-12-13 19:04:53,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012850863] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:04:53,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048822098] [2022-12-13 19:04:53,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:04:53,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:04:53,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:04:53,953 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:04:53,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 19:04:54,075 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2022-12-13 19:04:54,075 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:04:54,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 108 conjunts are in the unsatisfiable core [2022-12-13 19:04:54,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:04:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:04:54,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:00,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4004 backedges. 0 proven. 4004 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:00,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048822098] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:00,031 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:00,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [108, 108, 108] total 215 [2022-12-13 19:05:00,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968954602] [2022-12-13 19:05:00,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:00,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2022-12-13 19:05:00,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:00,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2022-12-13 19:05:00,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2022-12-13 19:05:00,046 INFO L87 Difference]: Start difference. First operand 328 states and 328 transitions. Second operand has 216 states, 213 states have (on average 2.4976525821596245) internal successors, (532), 110 states have internal predecessors, (532), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:05,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:05:05,082 INFO L93 Difference]: Finished difference Result 650 states and 701 transitions. [2022-12-13 19:05:05,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-12-13 19:05:05,083 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 213 states have (on average 2.4976525821596245) internal successors, (532), 110 states have internal predecessors, (532), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 320 [2022-12-13 19:05:05,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:05:05,087 INFO L225 Difference]: With dead ends: 650 [2022-12-13 19:05:05,088 INFO L226 Difference]: Without dead ends: 648 [2022-12-13 19:05:05,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 851 GetRequests, 531 SyntacticMatches, 1 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2022-12-13 19:05:05,095 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 1505 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1505 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 1375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 19:05:05,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1505 Valid, 119 Invalid, 1375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 19:05:05,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2022-12-13 19:05:05,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 646. [2022-12-13 19:05:05,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 537 states have (on average 1.0037243947858474) internal successors, (539), 538 states have internal predecessors, (539), 107 states have call successors, (107), 107 states have call predecessors, (107), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 646 transitions. [2022-12-13 19:05:05,122 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 646 transitions. Word has length 320 [2022-12-13 19:05:05,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:05:05,122 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 646 transitions. [2022-12-13 19:05:05,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 213 states have (on average 2.4976525821596245) internal successors, (532), 110 states have internal predecessors, (532), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:05:05,123 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 646 transitions. [2022-12-13 19:05:05,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 639 [2022-12-13 19:05:05,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:05:05,133 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 52, 1, 1, 1, 1, 1] [2022-12-13 19:05:05,138 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 19:05:05,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:05,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:05:05,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:05:05,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1473253135, now seen corresponding path program 3 times [2022-12-13 19:05:05,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:05:05,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684465520] [2022-12-13 19:05:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:05:05,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:05:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:05:23,532 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:23,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:05:23,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684465520] [2022-12-13 19:05:23,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684465520] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:05:23,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811971064] [2022-12-13 19:05:23,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 19:05:23,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:05:23,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:05:23,534 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:05:23,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 19:05:23,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 53 check-sat command(s) [2022-12-13 19:05:23,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:05:23,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1087 conjuncts, 214 conjunts are in the unsatisfiable core [2022-12-13 19:05:23,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:05:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:24,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:05:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 16432 backedges. 0 proven. 16432 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:05:42,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811971064] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:05:42,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:05:42,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [214, 214, 214] total 427 [2022-12-13 19:05:42,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226938705] [2022-12-13 19:05:42,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:05:42,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2022-12-13 19:05:42,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:05:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2022-12-13 19:05:42,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2022-12-13 19:05:42,183 INFO L87 Difference]: Start difference. First operand 646 states and 646 transitions. Second operand has 428 states, 425 states have (on average 2.498823529411765) internal successors, (1062), 216 states have internal predecessors, (1062), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:06:04,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:06:04,768 INFO L93 Difference]: Finished difference Result 1292 states and 1397 transitions. [2022-12-13 19:06:04,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2022-12-13 19:06:04,768 INFO L78 Accepts]: Start accepts. Automaton has has 428 states, 425 states have (on average 2.498823529411765) internal successors, (1062), 216 states have internal predecessors, (1062), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 638 [2022-12-13 19:06:04,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:06:04,771 INFO L225 Difference]: With dead ends: 1292 [2022-12-13 19:06:04,771 INFO L226 Difference]: Without dead ends: 1290 [2022-12-13 19:06:04,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1700 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132720 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=57352, Invalid=351608, Unknown=0, NotChecked=0, Total=408960 [2022-12-13 19:06:04,789 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 4445 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4445 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 19:06:04,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4445 Valid, 120 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 19:06:04,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1290 states. [2022-12-13 19:06:04,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1290 to 1288. [2022-12-13 19:06:04,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1072 states have (on average 1.001865671641791) internal successors, (1074), 1073 states have internal predecessors, (1074), 214 states have call successors, (214), 214 states have call predecessors, (214), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:06:04,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1288 transitions. [2022-12-13 19:06:04,833 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1288 transitions. Word has length 638 [2022-12-13 19:06:04,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:06:04,834 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1288 transitions. [2022-12-13 19:06:04,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 428 states, 425 states have (on average 2.498823529411765) internal successors, (1062), 216 states have internal predecessors, (1062), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:06:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1288 transitions. [2022-12-13 19:06:04,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1281 [2022-12-13 19:06:04,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:06:04,844 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 106, 106, 106, 106, 106, 106, 106, 106, 106, 1, 1, 1, 1, 1] [2022-12-13 19:06:04,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 19:06:05,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:06:05,045 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:06:05,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:06:05,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1882123077, now seen corresponding path program 4 times [2022-12-13 19:06:05,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:06:05,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058329076] [2022-12-13 19:06:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:06:05,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:06:05,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:07:54,114 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:54,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:07:54,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058329076] [2022-12-13 19:07:54,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058329076] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:07:54,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372718728] [2022-12-13 19:07:54,114 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 19:07:54,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:07:54,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:07:54,115 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:07:54,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 19:07:54,680 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 19:07:54,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 19:07:54,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 2157 conjuncts, 428 conjunts are in the unsatisfiable core [2022-12-13 19:07:54,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:07:55,849 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:07:55,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:09:03,103 INFO L134 CoverageAnalysis]: Checked inductivity of 67204 backedges. 0 proven. 67204 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:09:03,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372718728] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:09:03,104 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:09:03,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [428, 428, 428] total 855 [2022-12-13 19:09:03,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783145191] [2022-12-13 19:09:03,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:09:03,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 856 states [2022-12-13 19:09:03,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:09:03,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 856 interpolants. [2022-12-13 19:09:03,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92024, Invalid=639856, Unknown=0, NotChecked=0, Total=731880 [2022-12-13 19:09:03,148 INFO L87 Difference]: Start difference. First operand 1288 states and 1288 transitions. Second operand has 856 states, 853 states have (on average 2.499413833528722) internal successors, (2132), 430 states have internal predecessors, (2132), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:11,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 19:11:11,548 INFO L93 Difference]: Finished difference Result 2570 states and 2781 transitions. [2022-12-13 19:11:11,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 854 states. [2022-12-13 19:11:11,549 INFO L78 Accepts]: Start accepts. Automaton has has 856 states, 853 states have (on average 2.499413833528722) internal successors, (2132), 430 states have internal predecessors, (2132), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1280 [2022-12-13 19:11:11,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 19:11:11,558 INFO L225 Difference]: With dead ends: 2570 [2022-12-13 19:11:11,558 INFO L226 Difference]: Without dead ends: 2568 [2022-12-13 19:11:11,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3411 GetRequests, 2131 SyntacticMatches, 1 SemanticMatches, 1279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539537 ImplicationChecksByTransitivity, 154.1s TimeCoverageRelationStatistics Valid=228770, Invalid=1410910, Unknown=0, NotChecked=0, Total=1639680 [2022-12-13 19:11:11,648 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 9805 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4867 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9805 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 4974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 4867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 19:11:11,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9805 Valid, 126 Invalid, 4974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 4867 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 19:11:11,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-12-13 19:11:11,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 2566. [2022-12-13 19:11:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2566 states, 2137 states have (on average 1.0009358914365933) internal successors, (2139), 2138 states have internal predecessors, (2139), 427 states have call successors, (427), 427 states have call predecessors, (427), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2566 states to 2566 states and 2566 transitions. [2022-12-13 19:11:11,823 INFO L78 Accepts]: Start accepts. Automaton has 2566 states and 2566 transitions. Word has length 1280 [2022-12-13 19:11:11,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 19:11:11,824 INFO L495 AbstractCegarLoop]: Abstraction has 2566 states and 2566 transitions. [2022-12-13 19:11:11,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 856 states, 853 states have (on average 2.499413833528722) internal successors, (2132), 430 states have internal predecessors, (2132), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:11:11,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2566 states and 2566 transitions. [2022-12-13 19:11:11,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2559 [2022-12-13 19:11:11,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 19:11:11,856 INFO L195 NwaCegarLoop]: trace histogram [213, 213, 213, 213, 213, 213, 213, 213, 213, 212, 212, 212, 1, 1, 1, 1, 1] [2022-12-13 19:11:11,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 19:11:12,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cc82f347-c086-44cc-b943-92ef0e732cc3/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:11:12,057 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [isEvenErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, isEvenErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, isOddErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-12-13 19:11:12,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:11:12,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1983988145, now seen corresponding path program 4 times [2022-12-13 19:11:12,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:11:12,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215086719] [2022-12-13 19:11:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:11:12,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:11:14,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat