./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b5237d83 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_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a --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 d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- 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-b5237d8 [2022-11-21 17:23:49,989 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:23:49,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:23:50,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:23:50,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:23:50,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:23:50,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:23:50,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:23:50,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:23:50,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:23:50,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:23:50,037 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:23:50,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:23:50,039 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:23:50,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:23:50,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:23:50,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:23:50,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:23:50,060 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:23:50,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:23:50,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:23:50,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:23:50,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:23:50,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:23:50,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:23:50,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:23:50,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:23:50,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:23:50,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:23:50,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:23:50,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:23:50,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:23:50,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:23:50,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:23:50,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:23:50,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:23:50,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:23:50,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:23:50,099 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:23:50,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:23:50,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:23:50,102 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-21 17:23:50,134 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:23:50,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:23:50,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:23:50,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:23:50,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:23:50,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:23:50,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:23:50,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:23:50,136 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:23:50,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:23:50,137 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:23:50,137 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:23:50,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:23:50,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:23:50,138 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:23:50,138 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:23:50,138 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:23:50,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:23:50,139 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:23:50,139 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:23:50,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:23:50,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:23:50,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:23:50,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:23:50,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:23:50,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:23:50,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:23:50,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:23:50,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:23:50,141 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:23:50,141 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:23:50,141 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:23:50,142 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2022-11-21 17:23:50,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:23:50,535 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:23:50,546 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:23:50,548 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:23:50,563 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:23:50,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/termination-numeric/rec_counter3.c [2022-11-21 17:23:53,732 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:23:53,928 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:23:53,928 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/sv-benchmarks/c/termination-numeric/rec_counter3.c [2022-11-21 17:23:53,935 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/data/c91b27f74/20010942c1914421aa8134e6dcd92eca/FLAGf301eab90 [2022-11-21 17:23:53,957 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/data/c91b27f74/20010942c1914421aa8134e6dcd92eca [2022-11-21 17:23:53,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:23:53,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:23:53,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:23:53,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:23:53,970 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:23:53,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:23:53" (1/1) ... [2022-11-21 17:23:53,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8f9af2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:53, skipping insertion in model container [2022-11-21 17:23:53,973 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:23:53" (1/1) ... [2022-11-21 17:23:53,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:23:53,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:23:54,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:23:54,246 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:23:54,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:23:54,274 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:23:54,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54 WrapperNode [2022-11-21 17:23:54,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:23:54,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:23:54,277 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:23:54,277 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:23:54,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,290 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,308 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2022-11-21 17:23:54,308 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:23:54,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:23:54,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:23:54,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:23:54,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,328 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:23:54,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:23:54,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:23:54,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:23:54,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (1/1) ... [2022-11-21 17:23:54,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:23:54,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:23:54,369 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:23:54,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:23:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-11-21 17:23:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-11-21 17:23:54,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:23:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:23:54,488 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:23:54,491 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:23:54,652 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:23:54,660 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:23:54,660 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 17:23:54,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:23:54 BoogieIcfgContainer [2022-11-21 17:23:54,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:23:54,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:23:54,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:23:54,669 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:23:54,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:23:53" (1/3) ... [2022-11-21 17:23:54,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200aa12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:23:54, skipping insertion in model container [2022-11-21 17:23:54,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:23:54" (2/3) ... [2022-11-21 17:23:54,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@200aa12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:23:54, skipping insertion in model container [2022-11-21 17:23:54,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:23:54" (3/3) ... [2022-11-21 17:23:54,673 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2022-11-21 17:23:54,695 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:23:54,696 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-21 17:23:54,791 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:23:54,799 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;@7146120d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:23:54,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-21 17:23:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 17:23:54,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-21 17:23:54,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:54,810 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:54,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:23:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:54,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1089293515, now seen corresponding path program 1 times [2022-11-21 17:23:54,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:54,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441827533] [2022-11-21 17:23:54,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:54,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:55,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:55,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:55,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441827533] [2022-11-21 17:23:55,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441827533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:55,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:55,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:23:55,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746619476] [2022-11-21 17:23:55,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:55,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:23:55,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:55,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:23:55,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:23:55,104 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-21 17:23:55,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:55,242 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-11-21 17:23:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:23:55,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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 7 [2022-11-21 17:23:55,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:55,250 INFO L225 Difference]: With dead ends: 45 [2022-11-21 17:23:55,250 INFO L226 Difference]: Without dead ends: 22 [2022-11-21 17:23:55,254 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 [2022-11-21 17:23:55,258 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 40 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:55,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 48 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:23:55,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-21 17:23:55,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-21 17:23:55,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.5) internal successors, (21), 19 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:23:55,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-11-21 17:23:55,299 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2022-11-21 17:23:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:55,299 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-11-21 17:23:55,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-11-21 17:23:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-11-21 17:23:55,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:23:55,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:55,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:55,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:23:55,302 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:23:55,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash -591639365, now seen corresponding path program 1 times [2022-11-21 17:23:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:55,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110043644] [2022-11-21 17:23:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:55,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:55,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110043644] [2022-11-21 17:23:55,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110043644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:55,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:55,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-21 17:23:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712147797] [2022-11-21 17:23:55,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:55,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:23:55,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:23:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:23:55,384 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. 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) [2022-11-21 17:23:55,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:55,435 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-11-21 17:23:55,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:23:55,436 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 [2022-11-21 17:23:55,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:55,438 INFO L225 Difference]: With dead ends: 42 [2022-11-21 17:23:55,438 INFO L226 Difference]: Without dead ends: 37 [2022-11-21 17:23:55,438 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 [2022-11-21 17:23:55,440 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:55,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:23:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-21 17:23:55,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-21 17:23:55,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 17:23:55,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-11-21 17:23:55,453 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2022-11-21 17:23:55,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:55,454 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-21 17:23:55,454 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) [2022-11-21 17:23:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-11-21 17:23:55,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-21 17:23:55,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:55,456 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:55,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:23:55,457 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:23:55,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:55,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1393066815, now seen corresponding path program 1 times [2022-11-21 17:23:55,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:55,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94461658] [2022-11-21 17:23:55,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:55,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:55,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:55,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:55,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94461658] [2022-11-21 17:23:55,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94461658] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:23:55,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232972592] [2022-11-21 17:23:55,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:55,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:23:55,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:23:55,611 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:23:55,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:23:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:55,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:23:55,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:55,791 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:55,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:23:55,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:23:55,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232972592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:23:55,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:23:55,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-21 17:23:55,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993903127] [2022-11-21 17:23:55,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:23:55,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:23:55,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:55,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:23:55,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:23:55,943 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-11-21 17:23:56,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:56,071 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-11-21 17:23:56,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:23:56,073 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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) Word has length 13 [2022-11-21 17:23:56,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:56,075 INFO L225 Difference]: With dead ends: 39 [2022-11-21 17:23:56,075 INFO L226 Difference]: Without dead ends: 38 [2022-11-21 17:23:56,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:23:56,077 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 117 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:56,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 55 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:23:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-21 17:23:56,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-11-21 17:23:56,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 17:23:56,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-11-21 17:23:56,095 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 13 [2022-11-21 17:23:56,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:56,098 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-11-21 17:23:56,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 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) [2022-11-21 17:23:56,099 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-11-21 17:23:56,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 17:23:56,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:56,100 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:56,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 17:23:56,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:23:56,306 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:23:56,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454171, now seen corresponding path program 1 times [2022-11-21 17:23:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:56,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225319859] [2022-11-21 17:23:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:56,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:56,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:23:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:56,388 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:23:56,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:56,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225319859] [2022-11-21 17:23:56,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225319859] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:56,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:56,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:23:56,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924279483] [2022-11-21 17:23:56,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:56,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:23:56,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:56,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:23:56,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 17:23:56,391 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:23:56,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:56,422 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-11-21 17:23:56,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:23:56,423 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-21 17:23:56,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:56,424 INFO L225 Difference]: With dead ends: 48 [2022-11-21 17:23:56,424 INFO L226 Difference]: Without dead ends: 47 [2022-11-21 17:23:56,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:23:56,425 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 13 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:56,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 54 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:23:56,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-21 17:23:56,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2022-11-21 17:23:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 31 states have internal predecessors, (40), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-21 17:23:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-21 17:23:56,434 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 16 [2022-11-21 17:23:56,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:56,435 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-21 17:23:56,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:23:56,435 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-21 17:23:56,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-21 17:23:56,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:56,436 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:56,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:23:56,437 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:23:56,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454226, now seen corresponding path program 1 times [2022-11-21 17:23:56,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:56,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897140796] [2022-11-21 17:23:56,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:56,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:56,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:23:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:56,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:23:56,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:56,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897140796] [2022-11-21 17:23:56,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897140796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:56,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:56,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:23:56,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139821242] [2022-11-21 17:23:56,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:56,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:23:56,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:56,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:23:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:23:56,522 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:23:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:56,542 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2022-11-21 17:23:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 17:23:56,543 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-21 17:23:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:56,544 INFO L225 Difference]: With dead ends: 64 [2022-11-21 17:23:56,544 INFO L226 Difference]: Without dead ends: 42 [2022-11-21 17:23:56,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:23:56,545 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:56,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 80 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:23:56,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-21 17:23:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-21 17:23:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 35 states have internal predecessors, (45), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-21 17:23:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2022-11-21 17:23:56,555 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 16 [2022-11-21 17:23:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:56,555 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2022-11-21 17:23:56,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:23:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2022-11-21 17:23:56,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-21 17:23:56,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:56,556 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:56,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:23:56,557 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:23:56,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:56,558 INFO L85 PathProgramCache]: Analyzing trace with hash 805406401, now seen corresponding path program 1 times [2022-11-21 17:23:56,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:56,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44461111] [2022-11-21 17:23:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:56,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:56,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:23:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:23:56,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:56,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44461111] [2022-11-21 17:23:56,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44461111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:56,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:56,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:23:56,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788712194] [2022-11-21 17:23:56,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:56,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:23:56,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:56,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:23:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:23:56,623 INFO L87 Difference]: Start difference. First operand 42 states and 52 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:23:56,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:56,633 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-21 17:23:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:23:56,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-21 17:23:56,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:56,634 INFO L225 Difference]: With dead ends: 42 [2022-11-21 17:23:56,635 INFO L226 Difference]: Without dead ends: 37 [2022-11-21 17:23:56,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:23:56,636 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 8 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:56,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:23:56,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-21 17:23:56,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-21 17:23:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 17:23:56,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-11-21 17:23:56,644 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 17 [2022-11-21 17:23:56,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:56,644 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-11-21 17:23:56,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:23:56,645 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-11-21 17:23:56,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-21 17:23:56,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:56,646 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:56,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:23:56,646 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:23:56,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:56,647 INFO L85 PathProgramCache]: Analyzing trace with hash 719911349, now seen corresponding path program 1 times [2022-11-21 17:23:56,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:56,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012162522] [2022-11-21 17:23:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:56,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:56,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:23:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:23:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:56,951 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:23:56,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:56,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012162522] [2022-11-21 17:23:56,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012162522] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:23:56,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1297848752] [2022-11-21 17:23:56,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:56,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:23:56,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:23:56,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:23:56,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:23:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:57,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:23:57,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 17:23:57,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:23:57,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1297848752] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:57,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:23:57,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2022-11-21 17:23:57,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645627235] [2022-11-21 17:23:57,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:57,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:23:57,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:57,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:23:57,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:23:57,082 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 17:23:57,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:57,143 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-11-21 17:23:57,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:23:57,143 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2022-11-21 17:23:57,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:57,144 INFO L225 Difference]: With dead ends: 37 [2022-11-21 17:23:57,144 INFO L226 Difference]: Without dead ends: 36 [2022-11-21 17:23:57,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:23:57,146 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 12 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:57,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 83 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:23:57,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-21 17:23:57,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-21 17:23:57,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 17:23:57,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-21 17:23:57,154 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 27 [2022-11-21 17:23:57,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:57,155 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-21 17:23:57,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-21 17:23:57,155 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-21 17:23:57,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-21 17:23:57,156 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:57,156 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:57,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:23:57,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 17:23:57,362 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:23:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:57,362 INFO L85 PathProgramCache]: Analyzing trace with hash 842415392, now seen corresponding path program 1 times [2022-11-21 17:23:57,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:57,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494600362] [2022-11-21 17:23:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:57,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:57,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:23:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:57,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:23:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:57,402 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-21 17:23:57,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:57,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494600362] [2022-11-21 17:23:57,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494600362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:23:57,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:23:57,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:23:57,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519800405] [2022-11-21 17:23:57,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:23:57,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:23:57,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:57,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:23:57,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:23:57,405 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:23:57,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:57,412 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-11-21 17:23:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:23:57,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-21 17:23:57,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:57,413 INFO L225 Difference]: With dead ends: 36 [2022-11-21 17:23:57,413 INFO L226 Difference]: Without dead ends: 35 [2022-11-21 17:23:57,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:23:57,415 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:57,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:23:57,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-21 17:23:57,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-21 17:23:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-21 17:23:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-11-21 17:23:57,422 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 28 [2022-11-21 17:23:57,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:57,422 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-11-21 17:23:57,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-21 17:23:57,423 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-11-21 17:23:57,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-21 17:23:57,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:57,424 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:57,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:23:57,424 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:23:57,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:57,425 INFO L85 PathProgramCache]: Analyzing trace with hash 2107341579, now seen corresponding path program 1 times [2022-11-21 17:23:57,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:57,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717122088] [2022-11-21 17:23:57,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:57,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:57,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:23:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:57,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:23:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:57,500 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 17:23:57,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:57,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717122088] [2022-11-21 17:23:57,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717122088] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:23:57,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989565189] [2022-11-21 17:23:57,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:57,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:23:57,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:23:57,502 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:23:57,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:23:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:57,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-21 17:23:57,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:23:57,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:23:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-21 17:23:57,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989565189] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:23:57,845 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:23:57,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2022-11-21 17:23:57,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181425311] [2022-11-21 17:23:57,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:23:57,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 17:23:57,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:23:57,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 17:23:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:23:57,848 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-21 17:23:58,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:23:58,152 INFO L93 Difference]: Finished difference Result 122 states and 151 transitions. [2022-11-21 17:23:58,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-21 17:23:58,152 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 30 [2022-11-21 17:23:58,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:23:58,157 INFO L225 Difference]: With dead ends: 122 [2022-11-21 17:23:58,158 INFO L226 Difference]: Without dead ends: 89 [2022-11-21 17:23:58,159 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=200, Invalid=792, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:23:58,160 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 71 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:23:58,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 142 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:23:58,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-21 17:23:58,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2022-11-21 17:23:58,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 65 states have (on average 1.2153846153846153) internal successors, (79), 65 states have internal predecessors, (79), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 17:23:58,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2022-11-21 17:23:58,174 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 30 [2022-11-21 17:23:58,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:23:58,175 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2022-11-21 17:23:58,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 13 states have internal predecessors, (44), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-21 17:23:58,175 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2022-11-21 17:23:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 17:23:58,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:23:58,177 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-21 17:23:58,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:23:58,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:23:58,384 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:23:58,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:23:58,384 INFO L85 PathProgramCache]: Analyzing trace with hash 164414216, now seen corresponding path program 2 times [2022-11-21 17:23:58,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:23:58,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447789435] [2022-11-21 17:23:58,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:23:58,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:23:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:58,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 17:23:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:58,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:23:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:59,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:23:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:59,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:23:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:59,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:23:59,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:23:59,197 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 100 proven. 42 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-21 17:23:59,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:23:59,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447789435] [2022-11-21 17:23:59,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447789435] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:23:59,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496742093] [2022-11-21 17:23:59,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:23:59,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:23:59,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:23:59,202 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:23:59,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:23:59,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:23:59,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:23:59,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:23:59,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:23:59,442 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-21 17:23:59,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-21 17:24:00,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496742093] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:00,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:00,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 23 [2022-11-21 17:24:00,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62392130] [2022-11-21 17:24:00,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:00,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-21 17:24:00,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:00,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-21 17:24:00,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-11-21 17:24:00,294 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-21 17:24:00,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:00,555 INFO L93 Difference]: Finished difference Result 139 states and 169 transitions. [2022-11-21 17:24:00,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-21 17:24:00,556 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 91 [2022-11-21 17:24:00,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:00,557 INFO L225 Difference]: With dead ends: 139 [2022-11-21 17:24:00,557 INFO L226 Difference]: Without dead ends: 83 [2022-11-21 17:24:00,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 172 SyntacticMatches, 16 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2022-11-21 17:24:00,559 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:00,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 206 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:24:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-21 17:24:00,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-21 17:24:00,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 74 states have (on average 1.0945945945945945) internal successors, (81), 74 states have internal predecessors, (81), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-21 17:24:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2022-11-21 17:24:00,575 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 91 [2022-11-21 17:24:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:00,576 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2022-11-21 17:24:00,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 18 states have internal predecessors, (57), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-21 17:24:00,576 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2022-11-21 17:24:00,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 17:24:00,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:00,579 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 8, 7, 7, 7, 7, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:00,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:00,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 17:24:00,785 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:24:00,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash -594461554, now seen corresponding path program 3 times [2022-11-21 17:24:00,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:00,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277173042] [2022-11-21 17:24:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:00,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:01,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 17:24:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:01,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:01,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:01,388 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 179 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-11-21 17:24:01,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:01,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277173042] [2022-11-21 17:24:01,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277173042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:01,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947884006] [2022-11-21 17:24:01,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:24:01,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:01,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:01,391 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:01,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:24:01,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-21 17:24:01,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:01,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 17:24:01,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:01,615 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-11-21 17:24:01,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:01,867 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2022-11-21 17:24:01,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947884006] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:01,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:01,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2022-11-21 17:24:01,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201513707] [2022-11-21 17:24:01,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:01,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-21 17:24:01,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:01,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-21 17:24:01,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-21 17:24:01,871 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-21 17:24:02,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:02,481 INFO L93 Difference]: Finished difference Result 148 states and 171 transitions. [2022-11-21 17:24:02,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-21 17:24:02,481 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 97 [2022-11-21 17:24:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:02,483 INFO L225 Difference]: With dead ends: 148 [2022-11-21 17:24:02,483 INFO L226 Difference]: Without dead ends: 130 [2022-11-21 17:24:02,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2022-11-21 17:24:02,486 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 221 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:02,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 151 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:24:02,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-21 17:24:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2022-11-21 17:24:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 115 states have internal predecessors, (128), 3 states have call successors, (3), 2 states have call predecessors, (3), 6 states have return successors, (7), 7 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 17:24:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2022-11-21 17:24:02,504 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 97 [2022-11-21 17:24:02,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:02,504 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2022-11-21 17:24:02,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.4838709677419355) internal successors, (77), 27 states have internal predecessors, (77), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-21 17:24:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2022-11-21 17:24:02,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-21 17:24:02,507 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:02,507 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 9, 8, 8, 8, 8, 6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:02,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:02,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-21 17:24:02,713 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:24:02,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash -802253237, now seen corresponding path program 4 times [2022-11-21 17:24:02,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:02,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263200069] [2022-11-21 17:24:02,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:02,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 17:24:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:03,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:03,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:03,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:03,619 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-21 17:24:03,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:03,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263200069] [2022-11-21 17:24:03,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263200069] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:03,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264553141] [2022-11-21 17:24:03,620 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:24:03,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:03,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:03,621 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:03,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:24:03,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:24:03,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:03,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 17:24:03,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-21 17:24:03,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:05,558 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-21 17:24:05,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264553141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:05,558 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:05,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2022-11-21 17:24:05,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172758809] [2022-11-21 17:24:05,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:05,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-21 17:24:05,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:05,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-21 17:24:05,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2022-11-21 17:24:05,561 INFO L87 Difference]: Start difference. First operand 125 states and 138 transitions. Second operand has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-21 17:24:05,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:05,927 INFO L93 Difference]: Finished difference Result 638 states and 722 transitions. [2022-11-21 17:24:05,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-21 17:24:05,928 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 132 [2022-11-21 17:24:05,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:05,932 INFO L225 Difference]: With dead ends: 638 [2022-11-21 17:24:05,932 INFO L226 Difference]: Without dead ends: 469 [2022-11-21 17:24:05,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=625, Invalid=2681, Unknown=0, NotChecked=0, Total=3306 [2022-11-21 17:24:05,936 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 103 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:05,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 232 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:24:05,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-21 17:24:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 230. [2022-11-21 17:24:05,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 213 states have (on average 1.0938967136150235) internal successors, (233), 213 states have internal predecessors, (233), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-21 17:24:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 250 transitions. [2022-11-21 17:24:05,971 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 250 transitions. Word has length 132 [2022-11-21 17:24:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:05,973 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 250 transitions. [2022-11-21 17:24:05,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.5609756097560976) internal successors, (105), 29 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-21 17:24:05,973 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 250 transitions. [2022-11-21 17:24:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-21 17:24:05,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:05,984 INFO L195 NwaCegarLoop]: trace histogram [38, 38, 38, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:05,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:06,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-21 17:24:06,196 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:24:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:06,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1517932895, now seen corresponding path program 5 times [2022-11-21 17:24:06,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:06,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617158018] [2022-11-21 17:24:06,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:06,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:06,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:06,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:24:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:07,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:07,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:07,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:07,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:08,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:08,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:08,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1751 proven. 51 refuted. 0 times theorem prover too weak. 1673 trivial. 0 not checked. [2022-11-21 17:24:08,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:08,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617158018] [2022-11-21 17:24:08,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617158018] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:08,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683511052] [2022-11-21 17:24:08,035 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:24:08,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:08,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:08,036 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:08,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:24:08,157 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-21 17:24:08,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:08,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-21 17:24:08,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:08,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1319 proven. 88 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2022-11-21 17:24:08,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:09,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1337 proven. 70 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2022-11-21 17:24:09,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683511052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:09,932 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:09,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 27 [2022-11-21 17:24:09,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128481298] [2022-11-21 17:24:09,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:09,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-21 17:24:09,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:09,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-21 17:24:09,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-11-21 17:24:09,935 INFO L87 Difference]: Start difference. First operand 230 states and 250 transitions. Second operand has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-21 17:24:10,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:10,530 INFO L93 Difference]: Finished difference Result 492 states and 542 transitions. [2022-11-21 17:24:10,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-21 17:24:10,531 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 262 [2022-11-21 17:24:10,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:10,533 INFO L225 Difference]: With dead ends: 492 [2022-11-21 17:24:10,533 INFO L226 Difference]: Without dead ends: 301 [2022-11-21 17:24:10,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 586 GetRequests, 530 SyntacticMatches, 13 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=365, Invalid=1615, Unknown=0, NotChecked=0, Total=1980 [2022-11-21 17:24:10,535 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 71 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:10,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 259 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 17:24:10,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-21 17:24:10,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 288. [2022-11-21 17:24:10,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 268 states have (on average 1.078358208955224) internal successors, (289), 268 states have internal predecessors, (289), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-21 17:24:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 309 transitions. [2022-11-21 17:24:10,563 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 309 transitions. Word has length 262 [2022-11-21 17:24:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:10,564 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 309 transitions. [2022-11-21 17:24:10,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 25 states have internal predecessors, (72), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-21 17:24:10,564 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 309 transitions. [2022-11-21 17:24:10,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-11-21 17:24:10,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:10,569 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:10,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:10,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 17:24:10,775 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:24:10,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:10,775 INFO L85 PathProgramCache]: Analyzing trace with hash -2101259226, now seen corresponding path program 6 times [2022-11-21 17:24:10,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:10,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718113005] [2022-11-21 17:24:10,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:10,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:11,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:24:11,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:11,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:11,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:12,463 INFO L134 CoverageAnalysis]: Checked inductivity of 4427 backedges. 1945 proven. 90 refuted. 0 times theorem prover too weak. 2392 trivial. 0 not checked. [2022-11-21 17:24:12,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:12,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718113005] [2022-11-21 17:24:12,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718113005] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:12,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553072771] [2022-11-21 17:24:12,464 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:24:12,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:12,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:12,465 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:12,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:24:12,629 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-11-21 17:24:12,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:12,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 17:24:12,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:12,949 INFO L134 CoverageAnalysis]: Checked inductivity of 4427 backedges. 1402 proven. 119 refuted. 0 times theorem prover too weak. 2906 trivial. 0 not checked. [2022-11-21 17:24:12,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:13,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4427 backedges. 1402 proven. 119 refuted. 0 times theorem prover too weak. 2906 trivial. 0 not checked. [2022-11-21 17:24:13,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553072771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:13,831 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:13,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 14] total 47 [2022-11-21 17:24:13,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721778082] [2022-11-21 17:24:13,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:13,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-21 17:24:13,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:13,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-21 17:24:13,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2022-11-21 17:24:13,835 INFO L87 Difference]: Start difference. First operand 288 states and 309 transitions. Second operand has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-21 17:24:16,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:16,783 INFO L93 Difference]: Finished difference Result 1217 states and 1388 transitions. [2022-11-21 17:24:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-21 17:24:16,783 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 283 [2022-11-21 17:24:16,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:16,788 INFO L225 Difference]: With dead ends: 1217 [2022-11-21 17:24:16,788 INFO L226 Difference]: Without dead ends: 971 [2022-11-21 17:24:16,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 568 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3577 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2102, Invalid=12178, Unknown=0, NotChecked=0, Total=14280 [2022-11-21 17:24:16,796 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 391 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:16,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 380 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-21 17:24:16,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-11-21 17:24:16,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 380. [2022-11-21 17:24:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 357 states have (on average 1.0812324929971988) internal successors, (386), 357 states have internal predecessors, (386), 3 states have call successors, (3), 2 states have call predecessors, (3), 19 states have return successors, (20), 20 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-21 17:24:16,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 409 transitions. [2022-11-21 17:24:16,878 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 409 transitions. Word has length 283 [2022-11-21 17:24:16,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:16,878 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 409 transitions. [2022-11-21 17:24:16,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.1702127659574466) internal successors, (102), 44 states have internal predecessors, (102), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-21 17:24:16,879 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 409 transitions. [2022-11-21 17:24:16,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-21 17:24:16,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:16,886 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:16,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:17,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:17,091 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:24:17,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:17,092 INFO L85 PathProgramCache]: Analyzing trace with hash -850417349, now seen corresponding path program 7 times [2022-11-21 17:24:17,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:17,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676879688] [2022-11-21 17:24:17,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:17,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:24:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:18,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:18,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:19,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3710 proven. 138 refuted. 0 times theorem prover too weak. 2737 trivial. 0 not checked. [2022-11-21 17:24:19,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:19,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676879688] [2022-11-21 17:24:19,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676879688] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:19,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771528639] [2022-11-21 17:24:19,236 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:24:19,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:19,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:19,237 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:19,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 17:24:19,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:19,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-21 17:24:19,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3350 proven. 311 refuted. 0 times theorem prover too weak. 2924 trivial. 0 not checked. [2022-11-21 17:24:19,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:26,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3350 proven. 311 refuted. 0 times theorem prover too weak. 2924 trivial. 0 not checked. [2022-11-21 17:24:26,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771528639] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:26,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:26,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2022-11-21 17:24:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753786452] [2022-11-21 17:24:26,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:26,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-21 17:24:26,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:26,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-21 17:24:26,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2022-11-21 17:24:26,085 INFO L87 Difference]: Start difference. First operand 380 states and 409 transitions. Second operand has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-21 17:24:27,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:27,951 INFO L93 Difference]: Finished difference Result 787 states and 849 transitions. [2022-11-21 17:24:27,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-21 17:24:27,952 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 322 [2022-11-21 17:24:27,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:27,955 INFO L225 Difference]: With dead ends: 787 [2022-11-21 17:24:27,955 INFO L226 Difference]: Without dead ends: 521 [2022-11-21 17:24:27,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 623 SyntacticMatches, 31 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3493 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2022-11-21 17:24:27,960 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 78 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:27,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 439 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1673 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 17:24:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-21 17:24:28,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 469. [2022-11-21 17:24:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 442 states have (on average 1.0701357466063348) internal successors, (473), 442 states have internal predecessors, (473), 3 states have call successors, (3), 2 states have call predecessors, (3), 23 states have return successors, (24), 24 states have call predecessors, (24), 2 states have call successors, (24) [2022-11-21 17:24:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 500 transitions. [2022-11-21 17:24:28,016 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 500 transitions. Word has length 322 [2022-11-21 17:24:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:28,016 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 500 transitions. [2022-11-21 17:24:28,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.4318181818181817) internal successors, (107), 37 states have internal predecessors, (107), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-21 17:24:28,017 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 500 transitions. [2022-11-21 17:24:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-21 17:24:28,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:28,023 INFO L195 NwaCegarLoop]: trace histogram [63, 63, 63, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:28,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:28,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 17:24:28,230 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:24:28,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:28,230 INFO L85 PathProgramCache]: Analyzing trace with hash -200847262, now seen corresponding path program 8 times [2022-11-21 17:24:28,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:28,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083181639] [2022-11-21 17:24:28,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:28,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:28,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:24:28,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:29,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:29,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:30,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4312 proven. 195 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2022-11-21 17:24:30,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:30,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083181639] [2022-11-21 17:24:30,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083181639] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:30,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808899735] [2022-11-21 17:24:30,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:24:30,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:30,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:30,602 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:30,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 17:24:30,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:24:30,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:30,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-21 17:24:30,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:31,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4374 proven. 499 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2022-11-21 17:24:31,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:38,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4374 proven. 499 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2022-11-21 17:24:38,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808899735] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:38,925 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:38,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2022-11-21 17:24:38,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39137102] [2022-11-21 17:24:38,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:38,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-21 17:24:38,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:38,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-21 17:24:38,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2022-11-21 17:24:38,929 INFO L87 Difference]: Start difference. First operand 469 states and 500 transitions. Second operand has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 17:24:41,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:41,456 INFO L93 Difference]: Finished difference Result 958 states and 1021 transitions. [2022-11-21 17:24:41,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-21 17:24:41,456 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 337 [2022-11-21 17:24:41,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:41,460 INFO L225 Difference]: With dead ends: 958 [2022-11-21 17:24:41,460 INFO L226 Difference]: Without dead ends: 668 [2022-11-21 17:24:41,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 645 SyntacticMatches, 36 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5400 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1769, Invalid=12037, Unknown=0, NotChecked=0, Total=13806 [2022-11-21 17:24:41,466 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 90 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:41,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 481 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-21 17:24:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-21 17:24:41,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 588. [2022-11-21 17:24:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 556 states have (on average 1.0611510791366907) internal successors, (590), 556 states have internal predecessors, (590), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 29 states have call predecessors, (29), 2 states have call successors, (29) [2022-11-21 17:24:41,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 622 transitions. [2022-11-21 17:24:41,538 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 622 transitions. Word has length 337 [2022-11-21 17:24:41,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:41,538 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 622 transitions. [2022-11-21 17:24:41,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.372549019607843) internal successors, (121), 43 states have internal predecessors, (121), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 17:24:41,539 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 622 transitions. [2022-11-21 17:24:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-21 17:24:41,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:41,546 INFO L195 NwaCegarLoop]: trace histogram [67, 67, 67, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:41,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:41,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 17:24:41,753 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:24:41,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:41,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1183428946, now seen corresponding path program 9 times [2022-11-21 17:24:41,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:41,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706433046] [2022-11-21 17:24:41,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:41,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:42,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 17:24:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:43,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:43,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:44,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 4853 proven. 261 refuted. 0 times theorem prover too weak. 3401 trivial. 0 not checked. [2022-11-21 17:24:44,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:44,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706433046] [2022-11-21 17:24:44,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706433046] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:44,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932427422] [2022-11-21 17:24:44,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:24:44,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:44,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:44,564 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:44,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 17:24:44,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-21 17:24:44,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:44,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-21 17:24:44,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:45,590 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 1756 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2022-11-21 17:24:45,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:24:46,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 1756 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2022-11-21 17:24:46,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932427422] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:24:46,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:24:46,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 21] total 73 [2022-11-21 17:24:46,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644163772] [2022-11-21 17:24:46,745 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:24:46,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-21 17:24:46,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:46,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-21 17:24:46,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=4528, Unknown=0, NotChecked=0, Total=5256 [2022-11-21 17:24:46,749 INFO L87 Difference]: Start difference. First operand 588 states and 622 transitions. Second operand has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:24:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:49,956 INFO L93 Difference]: Finished difference Result 1739 states and 1954 transitions. [2022-11-21 17:24:49,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-21 17:24:49,957 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 359 [2022-11-21 17:24:49,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:49,963 INFO L225 Difference]: With dead ends: 1739 [2022-11-21 17:24:49,963 INFO L226 Difference]: Without dead ends: 1423 [2022-11-21 17:24:49,968 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4627 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=3164, Invalid=16296, Unknown=0, NotChecked=0, Total=19460 [2022-11-21 17:24:49,968 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 607 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:49,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 513 Invalid, 1329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-21 17:24:49,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-11-21 17:24:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 803. [2022-11-21 17:24:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 765 states have (on average 1.0627450980392157) internal successors, (813), 765 states have internal predecessors, (813), 3 states have call successors, (3), 2 states have call predecessors, (3), 34 states have return successors, (35), 35 states have call predecessors, (35), 2 states have call successors, (35) [2022-11-21 17:24:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 851 transitions. [2022-11-21 17:24:50,113 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 851 transitions. Word has length 359 [2022-11-21 17:24:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:50,114 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 851 transitions. [2022-11-21 17:24:50,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 1.8356164383561644) internal successors, (134), 72 states have internal predecessors, (134), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-21 17:24:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 851 transitions. [2022-11-21 17:24:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-21 17:24:50,124 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:50,124 INFO L195 NwaCegarLoop]: trace histogram [80, 80, 80, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:50,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:50,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 17:24:50,331 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:24:50,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:50,332 INFO L85 PathProgramCache]: Analyzing trace with hash 229112565, now seen corresponding path program 10 times [2022-11-21 17:24:50,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:50,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755479738] [2022-11-21 17:24:50,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:50,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:50,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:51,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:24:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:51,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:24:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:52,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 6985 proven. 336 refuted. 0 times theorem prover too weak. 4071 trivial. 0 not checked. [2022-11-21 17:24:52,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:52,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755479738] [2022-11-21 17:24:52,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755479738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:52,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823352110] [2022-11-21 17:24:52,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:24:52,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:52,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:52,960 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:52,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 17:24:53,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:24:53,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:24:53,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-21 17:24:53,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 7596 proven. 1073 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2022-11-21 17:24:54,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:25:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 7596 proven. 1073 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2022-11-21 17:25:04,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823352110] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:25:04,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:25:04,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 48, 48] total 65 [2022-11-21 17:25:04,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756498259] [2022-11-21 17:25:04,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:25:04,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-21 17:25:04,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:04,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-21 17:25:04,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3770, Unknown=0, NotChecked=0, Total=4160 [2022-11-21 17:25:04,110 INFO L87 Difference]: Start difference. First operand 803 states and 851 transitions. Second operand has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 17:25:08,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:08,631 INFO L93 Difference]: Finished difference Result 1552 states and 1640 transitions. [2022-11-21 17:25:08,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-21 17:25:08,631 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) Word has length 388 [2022-11-21 17:25:08,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:08,637 INFO L225 Difference]: With dead ends: 1552 [2022-11-21 17:25:08,637 INFO L226 Difference]: Without dead ends: 1154 [2022-11-21 17:25:08,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 731 SyntacticMatches, 46 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11136 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=3583, Invalid=25147, Unknown=0, NotChecked=0, Total=28730 [2022-11-21 17:25:08,645 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 110 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 3837 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 3855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:08,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 653 Invalid, 3855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3837 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 17:25:08,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-21 17:25:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1000. [2022-11-21 17:25:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1000 states, 955 states have (on average 1.0554973821989528) internal successors, (1008), 955 states have internal predecessors, (1008), 3 states have call successors, (3), 2 states have call predecessors, (3), 41 states have return successors, (42), 42 states have call predecessors, (42), 2 states have call successors, (42) [2022-11-21 17:25:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1053 transitions. [2022-11-21 17:25:08,857 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1053 transitions. Word has length 388 [2022-11-21 17:25:08,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:08,858 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1053 transitions. [2022-11-21 17:25:08,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.292307692307692) internal successors, (149), 55 states have internal predecessors, (149), 1 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (12), 12 states have call predecessors, (12), 1 states have call successors, (12) [2022-11-21 17:25:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1053 transitions. [2022-11-21 17:25:08,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-21 17:25:08,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:08,865 INFO L195 NwaCegarLoop]: trace histogram [82, 82, 82, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:08,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:25:09,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-21 17:25:09,073 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:25:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash -70699781, now seen corresponding path program 11 times [2022-11-21 17:25:09,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:09,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606479810] [2022-11-21 17:25:09,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:09,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:09,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 17:25:09,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:10,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 6812 proven. 420 refuted. 0 times theorem prover too weak. 4808 trivial. 0 not checked. [2022-11-21 17:25:11,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:11,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606479810] [2022-11-21 17:25:11,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606479810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:25:11,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94885678] [2022-11-21 17:25:11,317 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:25:11,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:25:11,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:25:11,319 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:25:11,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-21 17:25:11,881 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2022-11-21 17:25:11,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:25:11,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-21 17:25:11,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:25:12,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 8259 proven. 1615 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2022-11-21 17:25:12,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:25:19,971 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 8445 proven. 1429 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2022-11-21 17:25:19,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94885678] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:25:19,972 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:25:19,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 48] total 69 [2022-11-21 17:25:19,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105959837] [2022-11-21 17:25:19,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:25:19,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-21 17:25:19,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:19,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-21 17:25:19,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2022-11-21 17:25:19,975 INFO L87 Difference]: Start difference. First operand 1000 states and 1053 transitions. Second operand has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 17:25:25,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:25:25,066 INFO L93 Difference]: Finished difference Result 1870 states and 1963 transitions. [2022-11-21 17:25:25,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-21 17:25:25,067 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 404 [2022-11-21 17:25:25,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:25:25,073 INFO L225 Difference]: With dead ends: 1870 [2022-11-21 17:25:25,074 INFO L226 Difference]: Without dead ends: 1448 [2022-11-21 17:25:25,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 765 SyntacticMatches, 43 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12463 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4838, Invalid=30694, Unknown=0, NotChecked=0, Total=35532 [2022-11-21 17:25:25,082 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 131 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 3682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:25:25,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 503 Invalid, 3682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3656 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 17:25:25,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2022-11-21 17:25:25,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1248. [2022-11-21 17:25:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1248 states, 1195 states have (on average 1.0502092050209204) internal successors, (1255), 1195 states have internal predecessors, (1255), 3 states have call successors, (3), 2 states have call predecessors, (3), 49 states have return successors, (50), 50 states have call predecessors, (50), 2 states have call successors, (50) [2022-11-21 17:25:25,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1308 transitions. [2022-11-21 17:25:25,260 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1308 transitions. Word has length 404 [2022-11-21 17:25:25,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:25:25,261 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 1308 transitions. [2022-11-21 17:25:25,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 2.260869565217391) internal successors, (156), 61 states have internal predecessors, (156), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-21 17:25:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1308 transitions. [2022-11-21 17:25:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-21 17:25:25,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:25:25,268 INFO L195 NwaCegarLoop]: trace histogram [84, 84, 84, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-21 17:25:25,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-21 17:25:25,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:25:25,476 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:25:25,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:25:25,476 INFO L85 PathProgramCache]: Analyzing trace with hash 162608001, now seen corresponding path program 12 times [2022-11-21 17:25:25,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:25:25,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743678662] [2022-11-21 17:25:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:25:25,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:25:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:26,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 17:25:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:27,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:28,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:28,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:28,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:29,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:29,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:29,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:29,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:30,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:25:30,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:25:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 9009 proven. 1914 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2022-11-21 17:25:30,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:25:30,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743678662] [2022-11-21 17:25:30,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743678662] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:25:30,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557818180] [2022-11-21 17:25:30,322 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:25:30,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:25:30,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:25:30,330 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:25:30,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-21 17:25:31,032 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-11-21 17:25:31,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:25:31,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-21 17:25:31,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:25:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 580 proven. 10191 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2022-11-21 17:25:32,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:25:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 580 proven. 10191 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2022-11-21 17:25:43,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557818180] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:25:43,217 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:25:43,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 37, 37] total 130 [2022-11-21 17:25:43,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845069826] [2022-11-21 17:25:43,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:25:43,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-11-21 17:25:43,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:25:43,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-11-21 17:25:43,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1345, Invalid=15425, Unknown=0, NotChecked=0, Total=16770 [2022-11-21 17:25:43,221 INFO L87 Difference]: Start difference. First operand 1248 states and 1308 transitions. Second operand has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2022-11-21 17:26:23,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:23,455 INFO L93 Difference]: Finished difference Result 4255 states and 4522 transitions. [2022-11-21 17:26:23,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2022-11-21 17:26:23,455 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) Word has length 410 [2022-11-21 17:26:23,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:23,471 INFO L225 Difference]: With dead ends: 4255 [2022-11-21 17:26:23,471 INFO L226 Difference]: Without dead ends: 3470 [2022-11-21 17:26:23,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1579 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 804 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259569 ImplicationChecksByTransitivity, 41.3s TimeCoverageRelationStatistics Valid=53363, Invalid=595467, Unknown=0, NotChecked=0, Total=648830 [2022-11-21 17:26:23,694 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1983 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1983 SdHoareTripleChecker+Valid, 914 SdHoareTripleChecker+Invalid, 2637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:23,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1983 Valid, 914 Invalid, 2637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [255 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 17:26:23,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2022-11-21 17:26:24,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 2784. [2022-11-21 17:26:24,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2675 states have (on average 1.0429906542056075) internal successors, (2790), 2675 states have internal predecessors, (2790), 3 states have call successors, (3), 2 states have call predecessors, (3), 105 states have return successors, (106), 106 states have call predecessors, (106), 2 states have call successors, (106) [2022-11-21 17:26:24,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 2899 transitions. [2022-11-21 17:26:24,446 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 2899 transitions. Word has length 410 [2022-11-21 17:26:24,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:24,447 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 2899 transitions. [2022-11-21 17:26:24,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 2.476923076923077) internal successors, (322), 98 states have internal predecessors, (322), 1 states have call successors, (2), 1 states have call predecessors, (2), 34 states have return successors, (34), 34 states have call predecessors, (34), 1 states have call successors, (34) [2022-11-21 17:26:24,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 2899 transitions. [2022-11-21 17:26:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 861 [2022-11-21 17:26:24,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:24,464 INFO L195 NwaCegarLoop]: trace histogram [201, 201, 201, 25, 24, 24, 24, 24, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:24,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-21 17:26:24,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:26:24,672 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:26:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:24,673 INFO L85 PathProgramCache]: Analyzing trace with hash -262623055, now seen corresponding path program 13 times [2022-11-21 17:26:24,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:24,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243006993] [2022-11-21 17:26:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:24,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 17:26:26,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:27,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:28,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:30,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:30,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:31,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:32,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:32,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:33,980 INFO L134 CoverageAnalysis]: Checked inductivity of 67515 backedges. 1221 proven. 6 refuted. 0 times theorem prover too weak. 66288 trivial. 0 not checked. [2022-11-21 17:26:33,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:33,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243006993] [2022-11-21 17:26:33,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243006993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:26:33,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825060319] [2022-11-21 17:26:33,981 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:26:33,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:26:33,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:26:33,982 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:26:33,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-21 17:26:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:34,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 17:26:34,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:26:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 67515 backedges. 1222 proven. 5 refuted. 0 times theorem prover too weak. 66288 trivial. 0 not checked. [2022-11-21 17:26:34,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:26:36,534 INFO L134 CoverageAnalysis]: Checked inductivity of 67515 backedges. 1222 proven. 5 refuted. 0 times theorem prover too weak. 66288 trivial. 0 not checked. [2022-11-21 17:26:36,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825060319] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:26:36,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:26:36,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-11-21 17:26:36,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369318086] [2022-11-21 17:26:36,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:26:36,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 17:26:36,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:36,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 17:26:36,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-21 17:26:36,538 INFO L87 Difference]: Start difference. First operand 2784 states and 2899 transitions. Second operand has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-21 17:26:36,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:36,926 INFO L93 Difference]: Finished difference Result 4067 states and 4234 transitions. [2022-11-21 17:26:36,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:26:36,926 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 860 [2022-11-21 17:26:36,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:36,934 INFO L225 Difference]: With dead ends: 4067 [2022-11-21 17:26:36,934 INFO L226 Difference]: Without dead ends: 2035 [2022-11-21 17:26:36,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1795 GetRequests, 1771 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:26:36,943 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:36,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 109 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:26:36,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-21 17:26:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2035. [2022-11-21 17:26:37,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1957 states have (on average 1.0424118548799182) internal successors, (2040), 1957 states have internal predecessors, (2040), 3 states have call successors, (3), 2 states have call predecessors, (3), 74 states have return successors, (75), 75 states have call predecessors, (75), 2 states have call successors, (75) [2022-11-21 17:26:37,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2118 transitions. [2022-11-21 17:26:37,366 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2118 transitions. Word has length 860 [2022-11-21 17:26:37,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:37,366 INFO L495 AbstractCegarLoop]: Abstraction has 2035 states and 2118 transitions. [2022-11-21 17:26:37,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.533333333333333) internal successors, (38), 12 states have internal predecessors, (38), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-21 17:26:37,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2118 transitions. [2022-11-21 17:26:37,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 868 [2022-11-21 17:26:37,380 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:37,380 INFO L195 NwaCegarLoop]: trace histogram [203, 203, 203, 24, 23, 23, 23, 23, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:37,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-21 17:26:37,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-21 17:26:37,591 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:26:37,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:37,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1243703374, now seen corresponding path program 14 times [2022-11-21 17:26:37,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:37,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100110934] [2022-11-21 17:26:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:37,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:37,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:39,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:26:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:40,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:41,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:42,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:43,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:43,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:44,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:45,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:46,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:46,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:46,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:46,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:47,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:47,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:47,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:47,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:48,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:48,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:48,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:48,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:48,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:48,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:48,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:48,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:48,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:48,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:48,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:48,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 68985 backedges. 2783 proven. 30 refuted. 0 times theorem prover too weak. 66172 trivial. 0 not checked. [2022-11-21 17:26:48,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:26:48,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100110934] [2022-11-21 17:26:48,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100110934] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:26:48,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141653209] [2022-11-21 17:26:48,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:26:48,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:26:48,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:26:48,515 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:26:48,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-21 17:26:49,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:26:49,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:26:49,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 1963 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-21 17:26:49,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:26:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 68985 backedges. 2787 proven. 26 refuted. 0 times theorem prover too weak. 66172 trivial. 0 not checked. [2022-11-21 17:26:49,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:26:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 68985 backedges. 2787 proven. 26 refuted. 0 times theorem prover too weak. 66172 trivial. 0 not checked. [2022-11-21 17:26:52,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141653209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:26:52,216 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:26:52,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2022-11-21 17:26:52,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58962782] [2022-11-21 17:26:52,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:26:52,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-21 17:26:52,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:26:52,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-21 17:26:52,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-11-21 17:26:52,219 INFO L87 Difference]: Start difference. First operand 2035 states and 2118 transitions. Second operand has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-21 17:26:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:26:52,531 INFO L93 Difference]: Finished difference Result 2620 states and 2726 transitions. [2022-11-21 17:26:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-21 17:26:52,532 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 867 [2022-11-21 17:26:52,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:26:52,537 INFO L225 Difference]: With dead ends: 2620 [2022-11-21 17:26:52,537 INFO L226 Difference]: Without dead ends: 1337 [2022-11-21 17:26:52,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1821 GetRequests, 1782 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2022-11-21 17:26:52,542 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:26:52,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 139 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:26:52,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-11-21 17:26:52,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2022-11-21 17:26:52,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1337 states, 1288 states have (on average 1.0411490683229814) internal successors, (1341), 1288 states have internal predecessors, (1341), 3 states have call successors, (3), 2 states have call predecessors, (3), 45 states have return successors, (46), 46 states have call predecessors, (46), 2 states have call successors, (46) [2022-11-21 17:26:52,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1390 transitions. [2022-11-21 17:26:52,759 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1390 transitions. Word has length 867 [2022-11-21 17:26:52,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:26:52,760 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 1390 transitions. [2022-11-21 17:26:52,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.45) internal successors, (49), 16 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-21 17:26:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1390 transitions. [2022-11-21 17:26:52,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2022-11-21 17:26:52,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:26:52,772 INFO L195 NwaCegarLoop]: trace histogram [206, 206, 206, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-21 17:26:52,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-21 17:26:52,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:26:52,987 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:26:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:26:52,987 INFO L85 PathProgramCache]: Analyzing trace with hash -368747676, now seen corresponding path program 15 times [2022-11-21 17:26:52,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:26:52,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917317752] [2022-11-21 17:26:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:26:52,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:26:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:55,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 17:26:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:57,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:57,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:58,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:26:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:26:59,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:00,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:00,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:00,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:00,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:00,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:00,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:00,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:00,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:00,057 INFO L134 CoverageAnalysis]: Checked inductivity of 71599 backedges. 23396 proven. 615 refuted. 0 times theorem prover too weak. 47588 trivial. 0 not checked. [2022-11-21 17:27:00,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:00,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917317752] [2022-11-21 17:27:00,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917317752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:27:00,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757438209] [2022-11-21 17:27:00,058 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:27:00,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:00,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:00,059 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:27:00,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-21 17:27:00,849 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-11-21 17:27:00,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:27:00,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-21 17:27:00,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 71599 backedges. 17031 proven. 835 refuted. 0 times theorem prover too weak. 53733 trivial. 0 not checked. [2022-11-21 17:27:01,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:27:04,735 INFO L134 CoverageAnalysis]: Checked inductivity of 71599 backedges. 17031 proven. 835 refuted. 0 times theorem prover too weak. 53733 trivial. 0 not checked. [2022-11-21 17:27:04,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757438209] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:27:04,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:27:04,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 28, 28] total 103 [2022-11-21 17:27:04,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693920042] [2022-11-21 17:27:04,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:27:04,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-11-21 17:27:04,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:27:04,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-11-21 17:27:04,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=9300, Unknown=0, NotChecked=0, Total=10506 [2022-11-21 17:27:04,740 INFO L87 Difference]: Start difference. First operand 1337 states and 1390 transitions. Second operand has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-21 17:27:14,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:27:14,632 INFO L93 Difference]: Finished difference Result 5324 states and 5959 transitions. [2022-11-21 17:27:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-11-21 17:27:14,632 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 897 [2022-11-21 17:27:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:27:14,649 INFO L225 Difference]: With dead ends: 5324 [2022-11-21 17:27:14,649 INFO L226 Difference]: Without dead ends: 4442 [2022-11-21 17:27:14,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2062 GetRequests, 1790 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21070 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=9711, Invalid=65091, Unknown=0, NotChecked=0, Total=74802 [2022-11-21 17:27:14,663 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1475 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:27:14,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 762 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 17:27:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-11-21 17:27:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 1903. [2022-11-21 17:27:15,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1903 states, 1846 states have (on average 1.0444203683640303) internal successors, (1928), 1846 states have internal predecessors, (1928), 3 states have call successors, (3), 2 states have call predecessors, (3), 53 states have return successors, (54), 54 states have call predecessors, (54), 2 states have call successors, (54) [2022-11-21 17:27:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 1985 transitions. [2022-11-21 17:27:15,146 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 1985 transitions. Word has length 897 [2022-11-21 17:27:15,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:27:15,147 INFO L495 AbstractCegarLoop]: Abstraction has 1903 states and 1985 transitions. [2022-11-21 17:27:15,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.8058252427184467) internal successors, (186), 100 states have internal predecessors, (186), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-21 17:27:15,148 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 1985 transitions. [2022-11-21 17:27:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 966 [2022-11-21 17:27:15,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:27:15,162 INFO L195 NwaCegarLoop]: trace histogram [232, 232, 232, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-21 17:27:15,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-21 17:27:15,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:15,370 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:27:15,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:27:15,371 INFO L85 PathProgramCache]: Analyzing trace with hash -131776890, now seen corresponding path program 16 times [2022-11-21 17:27:15,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:27:15,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366205395] [2022-11-21 17:27:15,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:27:15,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:27:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:17,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:27:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:20,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:22,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:23,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:23,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:27:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:27:24,759 INFO L134 CoverageAnalysis]: Checked inductivity of 89017 backedges. 40095 proven. 726 refuted. 0 times theorem prover too weak. 48196 trivial. 0 not checked. [2022-11-21 17:27:24,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:27:24,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366205395] [2022-11-21 17:27:24,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366205395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:27:24,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924834141] [2022-11-21 17:27:24,760 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:27:24,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:27:24,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:27:24,762 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:27:24,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-21 17:27:25,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:27:25,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:27:25,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 2189 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-21 17:27:25,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:27:27,616 INFO L134 CoverageAnalysis]: Checked inductivity of 89017 backedges. 51655 proven. 3265 refuted. 0 times theorem prover too weak. 34097 trivial. 0 not checked. [2022-11-21 17:27:27,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:13,970 INFO L134 CoverageAnalysis]: Checked inductivity of 89017 backedges. 51655 proven. 3265 refuted. 0 times theorem prover too weak. 34097 trivial. 0 not checked. [2022-11-21 17:28:13,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924834141] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:13,970 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:28:13,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2022-11-21 17:28:13,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505142788] [2022-11-21 17:28:13,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:13,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-11-21 17:28:13,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:13,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-11-21 17:28:13,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2022-11-21 17:28:13,975 INFO L87 Difference]: Start difference. First operand 1903 states and 1985 transitions. Second operand has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 17:28:25,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:28:25,746 INFO L93 Difference]: Finished difference Result 3777 states and 3942 transitions. [2022-11-21 17:28:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-11-21 17:28:25,747 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 965 [2022-11-21 17:28:25,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:28:25,754 INFO L225 Difference]: With dead ends: 3777 [2022-11-21 17:28:25,754 INFO L226 Difference]: Without dead ends: 2618 [2022-11-21 17:28:25,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2237 GetRequests, 1875 SyntacticMatches, 66 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33434 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2022-11-21 17:28:25,763 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 164 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 8613 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 8637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 8613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:28:25,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 978 Invalid, 8637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 8613 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 17:28:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-11-21 17:28:26,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2312. [2022-11-21 17:28:26,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2312 states, 2239 states have (on average 1.0397498883430103) internal successors, (2328), 2239 states have internal predecessors, (2328), 3 states have call successors, (3), 2 states have call predecessors, (3), 69 states have return successors, (70), 70 states have call predecessors, (70), 2 states have call successors, (70) [2022-11-21 17:28:26,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2401 transitions. [2022-11-21 17:28:26,273 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2401 transitions. Word has length 965 [2022-11-21 17:28:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:28:26,276 INFO L495 AbstractCegarLoop]: Abstraction has 2312 states and 2401 transitions. [2022-11-21 17:28:26,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 2.204301075268817) internal successors, (205), 79 states have internal predecessors, (205), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-21 17:28:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2401 transitions. [2022-11-21 17:28:26,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2022-11-21 17:28:26,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:28:26,291 INFO L195 NwaCegarLoop]: trace histogram [241, 241, 241, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-21 17:28:26,303 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-21 17:28:26,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-21 17:28:26,502 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:28:26,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:28:26,502 INFO L85 PathProgramCache]: Analyzing trace with hash 458233131, now seen corresponding path program 17 times [2022-11-21 17:28:26,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:28:26,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002885978] [2022-11-21 17:28:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:28:26,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:28:26,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:28:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:32,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:35,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:36,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:36,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:36,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:36,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:37,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:37,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:37,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:37,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:28:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:28:37,116 INFO L134 CoverageAnalysis]: Checked inductivity of 95605 backedges. 42958 proven. 846 refuted. 0 times theorem prover too weak. 51801 trivial. 0 not checked. [2022-11-21 17:28:37,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:28:37,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002885978] [2022-11-21 17:28:37,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002885978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:28:37,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734226365] [2022-11-21 17:28:37,117 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:28:37,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:28:37,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:28:37,118 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:28:37,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-21 17:28:38,747 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2022-11-21 17:28:38,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:28:38,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 1438 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-21 17:28:38,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:28:39,579 INFO L134 CoverageAnalysis]: Checked inductivity of 95605 backedges. 57808 proven. 3728 refuted. 0 times theorem prover too weak. 34069 trivial. 0 not checked. [2022-11-21 17:28:39,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:28:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 95605 backedges. 59019 proven. 2517 refuted. 0 times theorem prover too weak. 34069 trivial. 0 not checked. [2022-11-21 17:28:58,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734226365] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:28:58,035 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:28:58,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 61, 61] total 90 [2022-11-21 17:28:58,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069159736] [2022-11-21 17:28:58,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:28:58,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 90 states [2022-11-21 17:28:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:28:58,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants. [2022-11-21 17:28:58,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=897, Invalid=7113, Unknown=0, NotChecked=0, Total=8010 [2022-11-21 17:28:58,041 INFO L87 Difference]: Start difference. First operand 2312 states and 2401 transitions. Second operand has 90 states, 90 states have (on average 1.9666666666666666) internal successors, (177), 85 states have internal predecessors, (177), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-21 17:29:06,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:06,767 INFO L93 Difference]: Finished difference Result 4111 states and 4269 transitions. [2022-11-21 17:29:06,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-11-21 17:29:06,768 INFO L78 Accepts]: Start accepts. Automaton has has 90 states, 90 states have (on average 1.9666666666666666) internal successors, (177), 85 states have internal predecessors, (177), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 992 [2022-11-21 17:29:06,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:06,779 INFO L225 Difference]: With dead ends: 4111 [2022-11-21 17:29:06,780 INFO L226 Difference]: Without dead ends: 3122 [2022-11-21 17:29:06,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2234 GetRequests, 1960 SyntacticMatches, 42 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16665 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=8603, Invalid=45919, Unknown=0, NotChecked=0, Total=54522 [2022-11-21 17:29:06,793 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 191 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 4670 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 4713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 4670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:06,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 970 Invalid, 4713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 4670 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:29:06,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-11-21 17:29:07,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2752. [2022-11-21 17:29:07,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2669 states have (on average 1.0363431997002623) internal successors, (2766), 2669 states have internal predecessors, (2766), 3 states have call successors, (3), 2 states have call predecessors, (3), 79 states have return successors, (80), 80 states have call predecessors, (80), 2 states have call successors, (80) [2022-11-21 17:29:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 2849 transitions. [2022-11-21 17:29:07,601 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 2849 transitions. Word has length 992 [2022-11-21 17:29:07,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:07,602 INFO L495 AbstractCegarLoop]: Abstraction has 2752 states and 2849 transitions. [2022-11-21 17:29:07,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 90 states, 90 states have (on average 1.9666666666666666) internal successors, (177), 85 states have internal predecessors, (177), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-21 17:29:07,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 2849 transitions. [2022-11-21 17:29:07,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2022-11-21 17:29:07,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:07,617 INFO L195 NwaCegarLoop]: trace histogram [249, 249, 249, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:07,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:07,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:07,831 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:29:07,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:07,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1499498003, now seen corresponding path program 18 times [2022-11-21 17:29:07,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:07,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436911656] [2022-11-21 17:29:07,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:07,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:08,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:29:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:14,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:16,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:18,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:18,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:18,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:19,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:19,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:19,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:19,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:29:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 101665 backedges. 45682 proven. 975 refuted. 0 times theorem prover too weak. 55008 trivial. 0 not checked. [2022-11-21 17:29:20,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:20,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436911656] [2022-11-21 17:29:20,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436911656] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:20,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313218280] [2022-11-21 17:29:20,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 17:29:20,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:20,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:20,524 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:20,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-21 17:29:22,768 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2022-11-21 17:29:22,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:29:22,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-21 17:29:22,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 101665 backedges. 36147 proven. 3936 refuted. 0 times theorem prover too weak. 61582 trivial. 0 not checked. [2022-11-21 17:29:24,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:29,640 INFO L134 CoverageAnalysis]: Checked inductivity of 101665 backedges. 36147 proven. 3936 refuted. 0 times theorem prover too weak. 61582 trivial. 0 not checked. [2022-11-21 17:29:29,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313218280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:29,641 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:29,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 37, 37] total 133 [2022-11-21 17:29:29,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816517129] [2022-11-21 17:29:29,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:29,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-11-21 17:29:29,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:29,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-11-21 17:29:29,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1875, Invalid=15681, Unknown=0, NotChecked=0, Total=17556 [2022-11-21 17:29:29,649 INFO L87 Difference]: Start difference. First operand 2752 states and 2849 transitions. Second operand has 133 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 128 states have internal predecessors, (238), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-21 17:29:53,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:53,456 INFO L93 Difference]: Finished difference Result 10301 states and 11361 transitions. [2022-11-21 17:29:53,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2022-11-21 17:29:53,466 INFO L78 Accepts]: Start accepts. Automaton has has 133 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 128 states have internal predecessors, (238), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 1016 [2022-11-21 17:29:53,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:53,493 INFO L225 Difference]: With dead ends: 10301 [2022-11-21 17:29:53,493 INFO L226 Difference]: Without dead ends: 9080 [2022-11-21 17:29:53,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2450 GetRequests, 2011 SyntacticMatches, 0 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61790 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=22403, Invalid=171637, Unknown=0, NotChecked=0, Total=194040 [2022-11-21 17:29:53,517 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 3187 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 3215 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3187 SdHoareTripleChecker+Valid, 883 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 3215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:53,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3187 Valid, 883 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 3215 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:29:53,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9080 states. [2022-11-21 17:29:54,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9080 to 3360. [2022-11-21 17:29:54,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3360 states, 3266 states have (on average 1.0404164115125536) internal successors, (3398), 3266 states have internal predecessors, (3398), 3 states have call successors, (3), 2 states have call predecessors, (3), 90 states have return successors, (91), 91 states have call predecessors, (91), 2 states have call successors, (91) [2022-11-21 17:29:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 3492 transitions. [2022-11-21 17:29:54,289 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 3492 transitions. Word has length 1016 [2022-11-21 17:29:54,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:54,290 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 3492 transitions. [2022-11-21 17:29:54,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 133 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 128 states have internal predecessors, (238), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-21 17:29:54,290 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 3492 transitions. [2022-11-21 17:29:54,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1126 [2022-11-21 17:29:54,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:54,303 INFO L195 NwaCegarLoop]: trace histogram [282, 282, 282, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:54,316 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:54,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-21 17:29:54,511 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:29:54,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:54,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1651435100, now seen corresponding path program 19 times [2022-11-21 17:29:54,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:54,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948332940] [2022-11-21 17:29:54,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:54,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 17:29:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:03,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:06,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:30:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 128941 backedges. 69838 proven. 1113 refuted. 0 times theorem prover too weak. 57990 trivial. 0 not checked. [2022-11-21 17:30:08,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:30:08,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948332940] [2022-11-21 17:30:08,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948332940] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:30:08,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844898920] [2022-11-21 17:30:08,865 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-21 17:30:08,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:30:08,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:30:08,866 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:30:08,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-21 17:30:11,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:30:11,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 2557 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-21 17:30:11,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:30:14,850 INFO L134 CoverageAnalysis]: Checked inductivity of 128941 backedges. 86003 proven. 6106 refuted. 0 times theorem prover too weak. 36832 trivial. 0 not checked. [2022-11-21 17:30:14,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:31:36,239 INFO L134 CoverageAnalysis]: Checked inductivity of 128941 backedges. 86003 proven. 6106 refuted. 0 times theorem prover too weak. 36832 trivial. 0 not checked. [2022-11-21 17:31:36,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844898920] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:31:36,240 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:31:36,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 83, 83] total 114 [2022-11-21 17:31:36,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554758720] [2022-11-21 17:31:36,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:31:36,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-11-21 17:31:36,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:31:36,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-11-21 17:31:36,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1076, Invalid=11806, Unknown=0, NotChecked=0, Total=12882 [2022-11-21 17:31:36,245 INFO L87 Difference]: Start difference. First operand 3360 states and 3492 transitions. Second operand has 114 states, 114 states have (on average 2.1666666666666665) internal successors, (247), 97 states have internal predecessors, (247), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-21 17:31:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:31:58,077 INFO L93 Difference]: Finished difference Result 5650 states and 5874 transitions. [2022-11-21 17:31:58,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2022-11-21 17:31:58,079 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 2.1666666666666665) internal successors, (247), 97 states have internal predecessors, (247), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) Word has length 1125 [2022-11-21 17:31:58,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:31:58,092 INFO L225 Difference]: With dead ends: 5650 [2022-11-21 17:31:58,092 INFO L226 Difference]: Without dead ends: 4463 [2022-11-21 17:31:58,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2666 GetRequests, 2172 SyntacticMatches, 81 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64190 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=20831, Invalid=150979, Unknown=0, NotChecked=0, Total=171810 [2022-11-21 17:31:58,114 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 203 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 10908 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 10938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 10908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:31:58,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1000 Invalid, 10938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 10908 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 17:31:58,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2022-11-21 17:31:59,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3947. [2022-11-21 17:31:59,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3947 states, 3841 states have (on average 1.036709190315022) internal successors, (3982), 3841 states have internal predecessors, (3982), 3 states have call successors, (3), 2 states have call predecessors, (3), 102 states have return successors, (103), 103 states have call predecessors, (103), 2 states have call successors, (103) [2022-11-21 17:31:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 4088 transitions. [2022-11-21 17:31:59,925 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 4088 transitions. Word has length 1125 [2022-11-21 17:31:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:31:59,926 INFO L495 AbstractCegarLoop]: Abstraction has 3947 states and 4088 transitions. [2022-11-21 17:31:59,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 2.1666666666666665) internal successors, (247), 97 states have internal predecessors, (247), 1 states have call successors, (2), 1 states have call predecessors, (2), 19 states have return successors, (19), 19 states have call predecessors, (19), 1 states have call successors, (19) [2022-11-21 17:31:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 4088 transitions. [2022-11-21 17:31:59,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2022-11-21 17:31:59,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:31:59,946 INFO L195 NwaCegarLoop]: trace histogram [287, 287, 287, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-21 17:31:59,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-21 17:32:00,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-21 17:32:00,146 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:32:00,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:32:00,147 INFO L85 PathProgramCache]: Analyzing trace with hash -117107305, now seen corresponding path program 20 times [2022-11-21 17:32:00,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:32:00,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701410405] [2022-11-21 17:32:00,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:32:00,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:32:00,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-21 17:32:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:13,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:16,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:32:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:32:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 72514 proven. 1266 refuted. 0 times theorem prover too weak. 59541 trivial. 0 not checked. [2022-11-21 17:32:19,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:32:19,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701410405] [2022-11-21 17:32:19,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701410405] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:32:19,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510810644] [2022-11-21 17:32:19,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:32:19,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:32:19,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:32:19,914 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:32:19,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-21 17:32:23,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:32:23,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:32:23,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-21 17:32:23,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:32:26,831 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 94098 proven. 7329 refuted. 0 times theorem prover too weak. 31894 trivial. 0 not checked. [2022-11-21 17:32:26,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:33:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 94098 proven. 7329 refuted. 0 times theorem prover too weak. 31894 trivial. 0 not checked. [2022-11-21 17:33:55,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510810644] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:33:55,262 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:33:55,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 88, 88] total 119 [2022-11-21 17:33:55,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750424096] [2022-11-21 17:33:55,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:33:55,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-11-21 17:33:55,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:33:55,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-11-21 17:33:55,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1129, Invalid=12913, Unknown=0, NotChecked=0, Total=14042 [2022-11-21 17:33:55,268 INFO L87 Difference]: Start difference. First operand 3947 states and 4088 transitions. Second operand has 119 states, 119 states have (on average 2.1596638655462184) internal successors, (257), 101 states have internal predecessors, (257), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-21 17:34:23,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:34:23,770 INFO L93 Difference]: Finished difference Result 6451 states and 6682 transitions. [2022-11-21 17:34:23,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 359 states. [2022-11-21 17:34:23,771 INFO L78 Accepts]: Start accepts. Automaton has has 119 states, 119 states have (on average 2.1596638655462184) internal successors, (257), 101 states have internal predecessors, (257), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) Word has length 1140 [2022-11-21 17:34:23,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:34:23,779 INFO L225 Difference]: With dead ends: 6451 [2022-11-21 17:34:23,779 INFO L226 Difference]: Without dead ends: 5216 [2022-11-21 17:34:23,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2737 GetRequests, 2196 SyntacticMatches, 86 SemanticMatches, 455 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76024 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=25312, Invalid=183080, Unknown=0, NotChecked=0, Total=208392 [2022-11-21 17:34:23,794 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 209 mSDsluCounter, 960 mSDsCounter, 0 mSdLazyCounter, 12241 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 12273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 12241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:34:23,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1006 Invalid, 12273 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 12241 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-21 17:34:23,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2022-11-21 17:34:25,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 4618. [2022-11-21 17:34:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4618 states, 4499 states have (on average 1.0335630140031118) internal successors, (4650), 4499 states have internal predecessors, (4650), 3 states have call successors, (3), 2 states have call predecessors, (3), 115 states have return successors, (116), 116 states have call predecessors, (116), 2 states have call successors, (116) [2022-11-21 17:34:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 4769 transitions. [2022-11-21 17:34:25,570 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 4769 transitions. Word has length 1140 [2022-11-21 17:34:25,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:34:25,570 INFO L495 AbstractCegarLoop]: Abstraction has 4618 states and 4769 transitions. [2022-11-21 17:34:25,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 119 states, 119 states have (on average 2.1596638655462184) internal successors, (257), 101 states have internal predecessors, (257), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2022-11-21 17:34:25,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 4769 transitions. [2022-11-21 17:34:25,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2022-11-21 17:34:25,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:34:25,584 INFO L195 NwaCegarLoop]: trace histogram [291, 291, 291, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-21 17:34:25,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-21 17:34:25,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-21 17:34:25,785 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:34:25,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:34:25,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1650252341, now seen corresponding path program 21 times [2022-11-21 17:34:25,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:34:25,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808107320] [2022-11-21 17:34:25,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:34:25,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:34:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:34:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:36,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:39,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:43,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:47,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:47,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:47,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:47,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:47,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:47,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:47,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:47,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:34:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:34:47,083 INFO L134 CoverageAnalysis]: Checked inductivity of 136630 backedges. 74873 proven. 1416 refuted. 0 times theorem prover too weak. 60341 trivial. 0 not checked. [2022-11-21 17:34:47,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:34:47,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808107320] [2022-11-21 17:34:47,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808107320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:34:47,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005661505] [2022-11-21 17:34:47,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:34:47,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:34:47,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:34:47,088 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:34:47,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-21 17:34:51,493 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-11-21 17:34:51,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:34:51,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-21 17:34:51,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:34:54,916 INFO L134 CoverageAnalysis]: Checked inductivity of 136630 backedges. 61581 proven. 12767 refuted. 0 times theorem prover too weak. 62282 trivial. 0 not checked. [2022-11-21 17:34:54,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:35:05,232 INFO L134 CoverageAnalysis]: Checked inductivity of 136630 backedges. 61581 proven. 12767 refuted. 0 times theorem prover too weak. 62282 trivial. 0 not checked. [2022-11-21 17:35:05,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005661505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:35:05,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:35:05,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 46, 46] total 163 [2022-11-21 17:35:05,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343859518] [2022-11-21 17:35:05,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:35:05,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-11-21 17:35:05,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:35:05,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-11-21 17:35:05,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2694, Invalid=23712, Unknown=0, NotChecked=0, Total=26406 [2022-11-21 17:35:05,240 INFO L87 Difference]: Start difference. First operand 4618 states and 4769 transitions. Second operand has 163 states, 163 states have (on average 1.7791411042944785) internal successors, (290), 156 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-21 17:35:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:35:56,316 INFO L93 Difference]: Finished difference Result 16725 states and 18288 transitions. [2022-11-21 17:35:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 487 states. [2022-11-21 17:35:56,317 INFO L78 Accepts]: Start accepts. Automaton has has 163 states, 163 states have (on average 1.7791411042944785) internal successors, (290), 156 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) Word has length 1142 [2022-11-21 17:35:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:35:56,369 INFO L225 Difference]: With dead ends: 16725 [2022-11-21 17:35:56,369 INFO L226 Difference]: Without dead ends: 15117 [2022-11-21 17:35:56,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2888 GetRequests, 2246 SyntacticMatches, 0 SemanticMatches, 642 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142635 ImplicationChecksByTransitivity, 47.2s TimeCoverageRelationStatistics Valid=43273, Invalid=370819, Unknown=0, NotChecked=0, Total=414092 [2022-11-21 17:35:56,420 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 4918 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 5324 mSolverCounterSat, 1105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4918 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 6429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1105 IncrementalHoareTripleChecker+Valid, 5324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:35:56,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4918 Valid, 1264 Invalid, 6429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1105 Valid, 5324 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-21 17:35:56,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15117 states. [2022-11-21 17:35:59,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15117 to 5554. [2022-11-21 17:35:59,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5554 states, 5421 states have (on average 1.036524626452684) internal successors, (5619), 5421 states have internal predecessors, (5619), 3 states have call successors, (3), 2 states have call predecessors, (3), 129 states have return successors, (130), 130 states have call predecessors, (130), 2 states have call successors, (130) [2022-11-21 17:35:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 5752 transitions. [2022-11-21 17:35:59,810 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 5752 transitions. Word has length 1142 [2022-11-21 17:35:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:35:59,812 INFO L495 AbstractCegarLoop]: Abstraction has 5554 states and 5752 transitions. [2022-11-21 17:35:59,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 163 states, 163 states have (on average 1.7791411042944785) internal successors, (290), 156 states have internal predecessors, (290), 1 states have call successors, (2), 1 states have call predecessors, (2), 9 states have return successors, (9), 9 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-21 17:35:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 5752 transitions. [2022-11-21 17:35:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1260 [2022-11-21 17:35:59,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:35:59,864 INFO L195 NwaCegarLoop]: trace histogram [330, 330, 330, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-21 17:35:59,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-21 17:36:00,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-21 17:36:00,091 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-21 17:36:00,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:36:00,092 INFO L85 PathProgramCache]: Analyzing trace with hash -679690984, now seen corresponding path program 22 times [2022-11-21 17:36:00,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:36:00,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317949363] [2022-11-21 17:36:00,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:36:00,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:36:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:09,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:36:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:17,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:23,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:24,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:29,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:33,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:38,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:40,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:40,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:41,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:41,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:44,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:45,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:45,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:46,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:46,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:47,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:47,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:47,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:48,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:48,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:48,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:48,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:48,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:49,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:49,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:49,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:49,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:36:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:36:49,605 INFO L134 CoverageAnalysis]: Checked inductivity of 173836 backedges. 86376 proven. 35970 refuted. 0 times theorem prover too weak. 51490 trivial. 0 not checked. [2022-11-21 17:36:49,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:36:49,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317949363] [2022-11-21 17:36:49,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317949363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:36:49,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119251724] [2022-11-21 17:36:49,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:36:49,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:36:49,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:36:49,609 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:36:49,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_371eaa7d-cfe7-4103-ad10-8b838976523a/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-21 17:36:54,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:36:54,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:36:54,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 2875 conjuncts, 90 conjunts are in the unsatisfiable core