./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/rec_counter1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b 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_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/rec_counter1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN --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 de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b --- 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-6b4ec56 [2022-11-20 11:51:10,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:51:10,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:51:10,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:51:10,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:51:10,173 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:51:10,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:51:10,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:51:10,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:51:10,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:51:10,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:51:10,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:51:10,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:51:10,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:51:10,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:51:10,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:51:10,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:51:10,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:51:10,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:51:10,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:51:10,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:51:10,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:51:10,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:51:10,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:51:10,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:51:10,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:51:10,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:51:10,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:51:10,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:51:10,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:51:10,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:51:10,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:51:10,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:51:10,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:51:10,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:51:10,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:51:10,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:51:10,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:51:10,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:51:10,238 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:51:10,239 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:51:10,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-64bit-Automizer_Default.epf [2022-11-20 11:51:10,268 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:51:10,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:51:10,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:51:10,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:51:10,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:51:10,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:51:10,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:51:10,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:51:10,271 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:51:10,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:51:10,271 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 11:51:10,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:51:10,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:51:10,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:51:10,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:51:10,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:51:10,273 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 11:51:10,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:51:10,273 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:51:10,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:51:10,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:51:10,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:51:10,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:51:10,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:51:10,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:51:10,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:51:10,275 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:51:10,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:51:10,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:51:10,276 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:51:10,276 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:51:10,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:51:10,277 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_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2022-11-20 11:51:10,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:51:10,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:51:10,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:51:10,533 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:51:10,533 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:51:10,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/termination-numeric/rec_counter1.c [2022-11-20 11:51:13,608 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:51:13,815 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:51:13,816 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/sv-benchmarks/c/termination-numeric/rec_counter1.c [2022-11-20 11:51:13,822 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/data/bac04ea7b/4ef3176c363b43628e3850da3c4f55ef/FLAG11bc7d4dd [2022-11-20 11:51:13,838 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/data/bac04ea7b/4ef3176c363b43628e3850da3c4f55ef [2022-11-20 11:51:13,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:51:13,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:51:13,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:51:13,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:51:13,849 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:51:13,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f60463a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:13, skipping insertion in model container [2022-11-20 11:51:13,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:51:13" (1/1) ... [2022-11-20 11:51:13,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:51:13,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:51:14,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:51:14,033 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:51:14,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:51:14,060 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:51:14,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14 WrapperNode [2022-11-20 11:51:14,061 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:51:14,062 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:51:14,063 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:51:14,063 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:51:14,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,092 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2022-11-20 11:51:14,092 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:51:14,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:51:14,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:51:14,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:51:14,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,111 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:51:14,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:51:14,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:51:14,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:51:14,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (1/1) ... [2022-11-20 11:51:14,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:51:14,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:14,147 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:51:14,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:51:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-11-20 11:51:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-11-20 11:51:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:51:14,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:51:14,251 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:51:14,252 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:51:14,382 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:51:14,390 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:51:14,391 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:51:14,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:51:14 BoogieIcfgContainer [2022-11-20 11:51:14,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:51:14,396 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:51:14,396 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:51:14,399 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:51:14,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:51:13" (1/3) ... [2022-11-20 11:51:14,400 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c57312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:51:14, skipping insertion in model container [2022-11-20 11:51:14,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:51:14" (2/3) ... [2022-11-20 11:51:14,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c57312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:51:14, skipping insertion in model container [2022-11-20 11:51:14,401 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:51:14" (3/3) ... [2022-11-20 11:51:14,403 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter1.c [2022-11-20 11:51:14,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:51:14,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-20 11:51:14,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:51:14,487 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;@3b32d3ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:51:14,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-11-20 11:51:14,519 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 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) [2022-11-20 11:51:14,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 11:51:14,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:14,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:14,527 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:14,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:14,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1088965814, now seen corresponding path program 1 times [2022-11-20 11:51:14,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:14,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936940301] [2022-11-20 11:51:14,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:14,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:14,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:14,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:14,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936940301] [2022-11-20 11:51:14,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936940301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:14,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:14,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:51:14,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279956225] [2022-11-20 11:51:14,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:14,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:51:14,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:14,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:51:14,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:51:14,773 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 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) [2022-11-20 11:51:14,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:14,911 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-11-20 11:51:14,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:51:14,915 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 [2022-11-20 11:51:14,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:14,922 INFO L225 Difference]: With dead ends: 43 [2022-11-20 11:51:14,925 INFO L226 Difference]: Without dead ends: 22 [2022-11-20 11:51:14,928 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 [2022-11-20 11:51:14,934 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 38 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 42 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 [2022-11-20 11:51:14,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 42 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:51:14,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-20 11:51:15,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-20 11:51:15,016 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) [2022-11-20 11:51:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-11-20 11:51:15,018 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 7 [2022-11-20 11:51:15,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:15,019 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-11-20 11:51:15,019 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) [2022-11-20 11:51:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-11-20 11:51:15,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 11:51:15,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:15,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:15,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:51:15,021 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:15,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:15,022 INFO L85 PathProgramCache]: Analyzing trace with hash -601798096, now seen corresponding path program 1 times [2022-11-20 11:51:15,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:15,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593029072] [2022-11-20 11:51:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:15,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:15,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:15,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:15,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593029072] [2022-11-20 11:51:15,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593029072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:15,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:15,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:51:15,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840037023] [2022-11-20 11:51:15,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:15,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:51:15,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:15,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:51:15,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:51:15,091 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) [2022-11-20 11:51:15,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:15,159 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2022-11-20 11:51:15,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:51:15,160 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 [2022-11-20 11:51:15,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:15,161 INFO L225 Difference]: With dead ends: 42 [2022-11-20 11:51:15,161 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 11:51:15,162 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 [2022-11-20 11:51:15,164 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 [2022-11-20 11:51:15,164 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] [2022-11-20 11:51:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 11:51:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2022-11-20 11:51:15,189 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) [2022-11-20 11:51:15,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-11-20 11:51:15,191 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2022-11-20 11:51:15,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:15,191 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-11-20 11:51:15,191 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) [2022-11-20 11:51:15,192 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-11-20 11:51:15,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 11:51:15,193 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:15,193 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:15,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:51:15,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:15,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash 758423009, now seen corresponding path program 1 times [2022-11-20 11:51:15,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:15,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793236019] [2022-11-20 11:51:15,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:15,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:15,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:15,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:15,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793236019] [2022-11-20 11:51:15,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793236019] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:15,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818976084] [2022-11-20 11:51:15,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:15,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:15,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:15,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:15,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:51:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:15,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 11:51:15,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:15,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:51:15,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818976084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:15,607 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:51:15,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-20 11:51:15,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247949092] [2022-11-20 11:51:15,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:15,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:51:15,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:15,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:51:15,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:51:15,611 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) [2022-11-20 11:51:15,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:15,710 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2022-11-20 11:51:15,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:51:15,711 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 [2022-11-20 11:51:15,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:15,713 INFO L225 Difference]: With dead ends: 39 [2022-11-20 11:51:15,713 INFO L226 Difference]: Without dead ends: 38 [2022-11-20 11:51:15,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:51:15,716 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 98 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:15,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 69 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:51:15,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-11-20 11:51:15,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2022-11-20 11:51:15,726 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) [2022-11-20 11:51:15,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2022-11-20 11:51:15,728 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 13 [2022-11-20 11:51:15,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:15,728 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2022-11-20 11:51:15,729 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) [2022-11-20 11:51:15,729 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2022-11-20 11:51:15,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:51:15,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:15,730 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:15,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:15,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:15,936 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:15,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:15,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452250, now seen corresponding path program 1 times [2022-11-20 11:51:15,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:15,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106860478] [2022-11-20 11:51:15,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:15,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:51:16,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:16,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106860478] [2022-11-20 11:51:16,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106860478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:16,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:16,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:51:16,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131707174] [2022-11-20 11:51:16,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:16,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:51:16,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:16,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:51:16,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:51:16,037 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) [2022-11-20 11:51:16,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:16,087 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2022-11-20 11:51:16,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:51:16,088 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 [2022-11-20 11:51:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:16,089 INFO L225 Difference]: With dead ends: 48 [2022-11-20 11:51:16,090 INFO L226 Difference]: Without dead ends: 47 [2022-11-20 11:51:16,090 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 [2022-11-20 11:51:16,092 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 [2022-11-20 11:51:16,092 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] [2022-11-20 11:51:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-20 11:51:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 36. [2022-11-20 11:51:16,101 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) [2022-11-20 11:51:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2022-11-20 11:51:16,103 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 16 [2022-11-20 11:51:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:16,103 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2022-11-20 11:51:16,104 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) [2022-11-20 11:51:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2022-11-20 11:51:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 11:51:16,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:16,105 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:16,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:51:16,106 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:16,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452195, now seen corresponding path program 1 times [2022-11-20 11:51:16,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:16,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662111008] [2022-11-20 11:51:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:16,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:51:16,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:16,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662111008] [2022-11-20 11:51:16,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662111008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:16,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:16,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:51:16,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838946763] [2022-11-20 11:51:16,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:16,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:51:16,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:16,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:51:16,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:51:16,197 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) [2022-11-20 11:51:16,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:16,222 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2022-11-20 11:51:16,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:51:16,223 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 [2022-11-20 11:51:16,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:16,224 INFO L225 Difference]: With dead ends: 64 [2022-11-20 11:51:16,225 INFO L226 Difference]: Without dead ends: 42 [2022-11-20 11:51:16,226 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 [2022-11-20 11:51:16,227 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 [2022-11-20 11:51:16,228 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] [2022-11-20 11:51:16,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-20 11:51:16,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-11-20 11:51:16,237 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) [2022-11-20 11:51:16,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2022-11-20 11:51:16,239 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 16 [2022-11-20 11:51:16,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:16,240 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2022-11-20 11:51:16,240 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) [2022-11-20 11:51:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2022-11-20 11:51:16,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 11:51:16,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:16,241 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:16,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:51:16,242 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:16,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:16,243 INFO L85 PathProgramCache]: Analyzing trace with hash 468587862, now seen corresponding path program 1 times [2022-11-20 11:51:16,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:16,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299485100] [2022-11-20 11:51:16,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:16,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:16,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:51:16,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:16,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299485100] [2022-11-20 11:51:16,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299485100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:16,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:16,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:51:16,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810023120] [2022-11-20 11:51:16,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:16,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:51:16,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:16,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:51:16,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:16,296 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) [2022-11-20 11:51:16,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:16,308 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-11-20 11:51:16,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:51:16,309 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 [2022-11-20 11:51:16,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:16,310 INFO L225 Difference]: With dead ends: 42 [2022-11-20 11:51:16,310 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 11:51:16,311 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 [2022-11-20 11:51:16,312 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 [2022-11-20 11:51:16,312 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] [2022-11-20 11:51:16,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 11:51:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-20 11:51:16,321 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) [2022-11-20 11:51:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-11-20 11:51:16,323 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 17 [2022-11-20 11:51:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:16,323 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-11-20 11:51:16,324 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) [2022-11-20 11:51:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-11-20 11:51:16,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 11:51:16,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:16,325 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:16,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:51:16,326 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1288772758, now seen corresponding path program 1 times [2022-11-20 11:51:16,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:16,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630694026] [2022-11-20 11:51:16,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:16,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,613 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:51:16,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:16,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630694026] [2022-11-20 11:51:16,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630694026] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:16,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809219357] [2022-11-20 11:51:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:16,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:16,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:16,616 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:16,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:51:16,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:16,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:51:16,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:51:16,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:16,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809219357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:16,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:51:16,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2022-11-20 11:51:16,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131344860] [2022-11-20 11:51:16,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:16,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:51:16,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:16,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:51:16,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:51:16,787 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) [2022-11-20 11:51:16,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:16,855 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-11-20 11:51:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:51:16,856 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 [2022-11-20 11:51:16,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:16,857 INFO L225 Difference]: With dead ends: 37 [2022-11-20 11:51:16,857 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 11:51:16,857 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 [2022-11-20 11:51:16,858 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 [2022-11-20 11:51:16,859 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] [2022-11-20 11:51:16,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 11:51:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-20 11:51:16,865 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) [2022-11-20 11:51:16,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2022-11-20 11:51:16,866 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 27 [2022-11-20 11:51:16,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:16,867 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2022-11-20 11:51:16,867 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) [2022-11-20 11:51:16,867 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2022-11-20 11:51:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 11:51:16,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:16,868 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:16,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:17,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:17,074 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:17,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:17,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1297249887, now seen corresponding path program 1 times [2022-11-20 11:51:17,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:17,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446698946] [2022-11-20 11:51:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:17,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:17,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:17,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:51:17,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:17,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446698946] [2022-11-20 11:51:17,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446698946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:17,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:51:17,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:51:17,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757064069] [2022-11-20 11:51:17,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:17,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:51:17,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:17,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:51:17,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:51:17,156 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) [2022-11-20 11:51:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:17,168 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2022-11-20 11:51:17,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:51:17,169 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 [2022-11-20 11:51:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:17,171 INFO L225 Difference]: With dead ends: 36 [2022-11-20 11:51:17,171 INFO L226 Difference]: Without dead ends: 35 [2022-11-20 11:51:17,171 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 [2022-11-20 11:51:17,172 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 [2022-11-20 11:51:17,176 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] [2022-11-20 11:51:17,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-11-20 11:51:17,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-11-20 11:51:17,189 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) [2022-11-20 11:51:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-11-20 11:51:17,191 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 28 [2022-11-20 11:51:17,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:17,193 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-11-20 11:51:17,193 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) [2022-11-20 11:51:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-11-20 11:51:17,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:51:17,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:17,196 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] [2022-11-20 11:51:17,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:51:17,197 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:17,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:17,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1116627082, now seen corresponding path program 1 times [2022-11-20 11:51:17,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:17,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993805534] [2022-11-20 11:51:17,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:17,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:17,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:17,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:17,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:17,284 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:51:17,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:17,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993805534] [2022-11-20 11:51:17,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993805534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:17,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364440622] [2022-11-20 11:51:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:17,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:17,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:17,287 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:17,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:51:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:17,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:51:17,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:17,415 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:51:17,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:17,626 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-20 11:51:17,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364440622] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:17,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:51:17,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 16 [2022-11-20 11:51:17,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26612733] [2022-11-20 11:51:17,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:17,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:51:17,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:17,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:51:17,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:51:17,630 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) [2022-11-20 11:51:17,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:17,974 INFO L93 Difference]: Finished difference Result 122 states and 151 transitions. [2022-11-20 11:51:17,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:51:17,974 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 [2022-11-20 11:51:17,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:17,981 INFO L225 Difference]: With dead ends: 122 [2022-11-20 11:51:17,981 INFO L226 Difference]: Without dead ends: 89 [2022-11-20 11:51:17,982 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 [2022-11-20 11:51:17,985 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 88 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:17,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 129 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:51:17,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-20 11:51:18,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 74. [2022-11-20 11:51:18,021 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) [2022-11-20 11:51:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2022-11-20 11:51:18,026 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 30 [2022-11-20 11:51:18,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:18,027 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2022-11-20 11:51:18,027 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) [2022-11-20 11:51:18,027 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2022-11-20 11:51:18,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:51:18,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:18,038 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] [2022-11-20 11:51:18,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:18,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-20 11:51:18,244 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:18,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:18,245 INFO L85 PathProgramCache]: Analyzing trace with hash -244897613, now seen corresponding path program 2 times [2022-11-20 11:51:18,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:18,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68907022] [2022-11-20 11:51:18,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:18,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:18,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:18,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:51:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:18,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:19,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 100 proven. 42 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-20 11:51:19,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:19,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68907022] [2022-11-20 11:51:19,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68907022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:19,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640515006] [2022-11-20 11:51:19,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:51:19,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:19,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:19,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:51:19,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:51:19,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:19,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:51:19,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-20 11:51:19,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 107 proven. 35 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-11-20 11:51:20,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640515006] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:20,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:51:20,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 23 [2022-11-20 11:51:20,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436372745] [2022-11-20 11:51:20,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:20,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 11:51:20,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:20,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 11:51:20,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:51:20,241 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) [2022-11-20 11:51:20,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:20,531 INFO L93 Difference]: Finished difference Result 139 states and 169 transitions. [2022-11-20 11:51:20,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:51:20,531 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 [2022-11-20 11:51:20,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:20,533 INFO L225 Difference]: With dead ends: 139 [2022-11-20 11:51:20,533 INFO L226 Difference]: Without dead ends: 83 [2022-11-20 11:51:20,534 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 [2022-11-20 11:51:20,535 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 18 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:20,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 268 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:51:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-11-20 11:51:20,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2022-11-20 11:51:20,547 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) [2022-11-20 11:51:20,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2022-11-20 11:51:20,548 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 91 [2022-11-20 11:51:20,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:20,549 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2022-11-20 11:51:20,549 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) [2022-11-20 11:51:20,550 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2022-11-20 11:51:20,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 11:51:20,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:20,551 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:20,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:20,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:51:20,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:20,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:20,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2079362653, now seen corresponding path program 3 times [2022-11-20 11:51:20,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:20,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326700112] [2022-11-20 11:51:20,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:20,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:20,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:21,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:21,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:21,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:21,414 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 0 proven. 179 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-20 11:51:21,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:21,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326700112] [2022-11-20 11:51:21,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326700112] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:21,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169004618] [2022-11-20 11:51:21,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:51:21,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:21,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:21,416 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:21,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:51:21,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:51:21,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:21,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:51:21,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-20 11:51:21,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 269 backedges. 80 proven. 12 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-20 11:51:21,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169004618] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:21,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:51:21,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9, 9] total 31 [2022-11-20 11:51:21,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255969517] [2022-11-20 11:51:21,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:21,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-20 11:51:21,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:21,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-20 11:51:21,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-11-20 11:51:21,935 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) [2022-11-20 11:51:22,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:22,626 INFO L93 Difference]: Finished difference Result 148 states and 171 transitions. [2022-11-20 11:51:22,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-20 11:51:22,627 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 87 [2022-11-20 11:51:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:22,630 INFO L225 Difference]: With dead ends: 148 [2022-11-20 11:51:22,631 INFO L226 Difference]: Without dead ends: 130 [2022-11-20 11:51:22,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1297 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1021, Invalid=3139, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 11:51:22,634 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 206 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:22,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 161 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:51:22,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-20 11:51:22,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2022-11-20 11:51:22,663 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) [2022-11-20 11:51:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 138 transitions. [2022-11-20 11:51:22,664 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 138 transitions. Word has length 87 [2022-11-20 11:51:22,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:22,665 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 138 transitions. [2022-11-20 11:51:22,665 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) [2022-11-20 11:51:22,665 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 138 transitions. [2022-11-20 11:51:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-20 11:51:22,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:22,671 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] [2022-11-20 11:51:22,682 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:22,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:22,877 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:22,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1902147306, now seen corresponding path program 4 times [2022-11-20 11:51:22,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:22,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223137068] [2022-11-20 11:51:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:22,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:23,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:51:23,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:23,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:23,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:23,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:23,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:23,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:23,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:23,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:23,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:23,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 492 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2022-11-20 11:51:23,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:23,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223137068] [2022-11-20 11:51:23,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223137068] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:23,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653087810] [2022-11-20 11:51:23,830 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:51:23,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:23,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:23,835 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:23,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:51:23,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:51:23,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:23,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 11:51:23,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-20 11:51:24,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:25,846 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 0 proven. 485 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-20 11:51:25,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653087810] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:25,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:51:25,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 41 [2022-11-20 11:51:25,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732626460] [2022-11-20 11:51:25,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:25,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-20 11:51:25,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:25,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-20 11:51:25,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=322, Invalid=1400, Unknown=0, NotChecked=0, Total=1722 [2022-11-20 11:51:25,849 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) [2022-11-20 11:51:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:26,238 INFO L93 Difference]: Finished difference Result 638 states and 722 transitions. [2022-11-20 11:51:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-20 11:51:26,238 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 [2022-11-20 11:51:26,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:26,242 INFO L225 Difference]: With dead ends: 638 [2022-11-20 11:51:26,242 INFO L226 Difference]: Without dead ends: 469 [2022-11-20 11:51:26,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1268 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=625, Invalid=2681, Unknown=0, NotChecked=0, Total=3306 [2022-11-20 11:51:26,246 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 107 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:26,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 250 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:51:26,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-20 11:51:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 230. [2022-11-20 11:51:26,273 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) [2022-11-20 11:51:26,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 250 transitions. [2022-11-20 11:51:26,275 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 250 transitions. Word has length 132 [2022-11-20 11:51:26,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:26,275 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 250 transitions. [2022-11-20 11:51:26,276 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) [2022-11-20 11:51:26,276 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 250 transitions. [2022-11-20 11:51:26,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2022-11-20 11:51:26,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:26,279 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] [2022-11-20 11:51:26,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:26,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:26,485 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:26,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:26,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1072440394, now seen corresponding path program 5 times [2022-11-20 11:51:26,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:26,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043503728] [2022-11-20 11:51:26,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:26,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:26,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:27,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:27,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:27,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1751 proven. 51 refuted. 0 times theorem prover too weak. 1673 trivial. 0 not checked. [2022-11-20 11:51:28,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:28,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043503728] [2022-11-20 11:51:28,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043503728] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:28,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826160149] [2022-11-20 11:51:28,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:51:28,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:28,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:28,312 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:28,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:51:28,437 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-11-20 11:51:28,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:28,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:51:28,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:28,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1319 proven. 88 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2022-11-20 11:51:28,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3475 backedges. 1337 proven. 70 refuted. 0 times theorem prover too weak. 2068 trivial. 0 not checked. [2022-11-20 11:51:30,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826160149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:30,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:51:30,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 27 [2022-11-20 11:51:30,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308640267] [2022-11-20 11:51:30,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:30,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 11:51:30,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:30,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 11:51:30,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:51:30,232 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) [2022-11-20 11:51:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:30,887 INFO L93 Difference]: Finished difference Result 492 states and 542 transitions. [2022-11-20 11:51:30,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-20 11:51:30,888 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 [2022-11-20 11:51:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:30,890 INFO L225 Difference]: With dead ends: 492 [2022-11-20 11:51:30,890 INFO L226 Difference]: Without dead ends: 301 [2022-11-20 11:51:30,892 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 [2022-11-20 11:51:30,893 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 52 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:30,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 295 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:51:30,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-20 11:51:30,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 288. [2022-11-20 11:51:30,920 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) [2022-11-20 11:51:30,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 309 transitions. [2022-11-20 11:51:30,922 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 309 transitions. Word has length 262 [2022-11-20 11:51:30,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:30,923 INFO L495 AbstractCegarLoop]: Abstraction has 288 states and 309 transitions. [2022-11-20 11:51:30,923 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) [2022-11-20 11:51:30,923 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 309 transitions. [2022-11-20 11:51:30,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2022-11-20 11:51:30,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:30,928 INFO L195 NwaCegarLoop]: trace histogram [45, 45, 45, 16, 15, 15, 15, 15, 13, 13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:30,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:31,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:31,134 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:31,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:31,134 INFO L85 PathProgramCache]: Analyzing trace with hash -60644733, now seen corresponding path program 6 times [2022-11-20 11:51:31,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:31,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871548136] [2022-11-20 11:51:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:31,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:51:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 4566 backedges. 1945 proven. 90 refuted. 0 times theorem prover too weak. 2531 trivial. 0 not checked. [2022-11-20 11:51:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:32,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871548136] [2022-11-20 11:51:32,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871548136] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:32,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196624605] [2022-11-20 11:51:32,856 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:51:32,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:32,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:32,859 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:32,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:51:33,022 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-11-20 11:51:33,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:33,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:51:33,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 4566 backedges. 1402 proven. 119 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2022-11-20 11:51:33,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 4566 backedges. 1402 proven. 119 refuted. 0 times theorem prover too weak. 3045 trivial. 0 not checked. [2022-11-20 11:51:34,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196624605] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:34,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:51:34,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 14, 14] total 47 [2022-11-20 11:51:34,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633547114] [2022-11-20 11:51:34,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:34,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-20 11:51:34,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-20 11:51:34,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=275, Invalid=1887, Unknown=0, NotChecked=0, Total=2162 [2022-11-20 11:51:34,270 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) [2022-11-20 11:51:37,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:37,396 INFO L93 Difference]: Finished difference Result 1217 states and 1388 transitions. [2022-11-20 11:51:37,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-20 11:51:37,397 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 293 [2022-11-20 11:51:37,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:37,401 INFO L225 Difference]: With dead ends: 1217 [2022-11-20 11:51:37,401 INFO L226 Difference]: Without dead ends: 971 [2022-11-20 11:51:37,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 588 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3577 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2102, Invalid=12178, Unknown=0, NotChecked=0, Total=14280 [2022-11-20 11:51:37,423 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 536 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:37,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 374 Invalid, 959 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:51:37,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-11-20 11:51:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 380. [2022-11-20 11:51:37,507 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) [2022-11-20 11:51:37,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 409 transitions. [2022-11-20 11:51:37,511 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 409 transitions. Word has length 293 [2022-11-20 11:51:37,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:37,511 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 409 transitions. [2022-11-20 11:51:37,512 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) [2022-11-20 11:51:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 409 transitions. [2022-11-20 11:51:37,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-11-20 11:51:37,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:37,519 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] [2022-11-20 11:51:37,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:37,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:37,726 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:37,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:37,727 INFO L85 PathProgramCache]: Analyzing trace with hash 286972742, now seen corresponding path program 7 times [2022-11-20 11:51:37,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:37,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191610650] [2022-11-20 11:51:37,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:37,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:38,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:38,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3710 proven. 138 refuted. 0 times theorem prover too weak. 2737 trivial. 0 not checked. [2022-11-20 11:51:39,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:39,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191610650] [2022-11-20 11:51:40,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191610650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:40,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822331718] [2022-11-20 11:51:40,000 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:51:40,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:40,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:40,001 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:40,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:51:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:40,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 718 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 11:51:40,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3350 proven. 311 refuted. 0 times theorem prover too weak. 2924 trivial. 0 not checked. [2022-11-20 11:51:40,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:51:47,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6585 backedges. 3350 proven. 311 refuted. 0 times theorem prover too weak. 2924 trivial. 0 not checked. [2022-11-20 11:51:47,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822331718] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:51:47,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:51:47,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33, 33] total 44 [2022-11-20 11:51:47,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112213357] [2022-11-20 11:51:47,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:51:47,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 11:51:47,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:47,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 11:51:47,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1691, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 11:51:47,133 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) [2022-11-20 11:51:48,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:48,998 INFO L93 Difference]: Finished difference Result 787 states and 849 transitions. [2022-11-20 11:51:48,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-20 11:51:49,001 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 [2022-11-20 11:51:49,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:49,005 INFO L225 Difference]: With dead ends: 787 [2022-11-20 11:51:49,005 INFO L226 Difference]: Without dead ends: 521 [2022-11-20 11:51:49,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 623 SyntacticMatches, 31 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3493 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1171, Invalid=7759, Unknown=0, NotChecked=0, Total=8930 [2022-11-20 11:51:49,012 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 77 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:49,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 397 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:51:49,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-20 11:51:49,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 469. [2022-11-20 11:51:49,069 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) [2022-11-20 11:51:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 500 transitions. [2022-11-20 11:51:49,072 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 500 transitions. Word has length 322 [2022-11-20 11:51:49,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:49,073 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 500 transitions. [2022-11-20 11:51:49,074 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) [2022-11-20 11:51:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 500 transitions. [2022-11-20 11:51:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2022-11-20 11:51:49,080 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:49,080 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] [2022-11-20 11:51:49,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:51:49,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 11:51:49,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:51:49,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:49,288 INFO L85 PathProgramCache]: Analyzing trace with hash 113070627, now seen corresponding path program 8 times [2022-11-20 11:51:49,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:49,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748903478] [2022-11-20 11:51:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:49,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:49,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:50,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:50,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:51:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4312 proven. 195 refuted. 0 times theorem prover too weak. 3043 trivial. 0 not checked. [2022-11-20 11:51:51,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:51,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748903478] [2022-11-20 11:51:51,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748903478] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:51,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317719740] [2022-11-20 11:51:51,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:51:51,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:51,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:51,736 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:51,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:51:52,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:51:52,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:51:52,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 753 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 11:51:52,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4374 proven. 499 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2022-11-20 11:51:52,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:00,098 INFO L134 CoverageAnalysis]: Checked inductivity of 7550 backedges. 4374 proven. 499 refuted. 0 times theorem prover too weak. 2677 trivial. 0 not checked. [2022-11-20 11:52:00,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317719740] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:00,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:52:00,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38, 38] total 51 [2022-11-20 11:52:00,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942622670] [2022-11-20 11:52:00,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:00,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-11-20 11:52:00,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:00,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-11-20 11:52:00,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2293, Unknown=0, NotChecked=0, Total=2550 [2022-11-20 11:52:00,102 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) [2022-11-20 11:52:02,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:02,688 INFO L93 Difference]: Finished difference Result 958 states and 1021 transitions. [2022-11-20 11:52:02,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-20 11:52:02,688 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 [2022-11-20 11:52:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:02,691 INFO L225 Difference]: With dead ends: 958 [2022-11-20 11:52:02,692 INFO L226 Difference]: Without dead ends: 668 [2022-11-20 11:52:02,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 645 SyntacticMatches, 36 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5400 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1769, Invalid=12037, Unknown=0, NotChecked=0, Total=13806 [2022-11-20 11:52:02,697 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 87 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 1790 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:02,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 420 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1790 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 11:52:02,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-20 11:52:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 588. [2022-11-20 11:52:02,771 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) [2022-11-20 11:52:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 622 transitions. [2022-11-20 11:52:02,773 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 622 transitions. Word has length 337 [2022-11-20 11:52:02,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:02,774 INFO L495 AbstractCegarLoop]: Abstraction has 588 states and 622 transitions. [2022-11-20 11:52:02,774 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) [2022-11-20 11:52:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 622 transitions. [2022-11-20 11:52:02,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2022-11-20 11:52:02,782 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:02,782 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] [2022-11-20 11:52:02,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-20 11:52:02,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:52:02,988 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:52:02,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:02,989 INFO L85 PathProgramCache]: Analyzing trace with hash -382247901, now seen corresponding path program 9 times [2022-11-20 11:52:02,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:02,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664431978] [2022-11-20 11:52:02,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:02,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:03,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:52:04,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:04,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 4853 proven. 261 refuted. 0 times theorem prover too weak. 3401 trivial. 0 not checked. [2022-11-20 11:52:05,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664431978] [2022-11-20 11:52:05,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664431978] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:52:05,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939403244] [2022-11-20 11:52:05,936 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:52:05,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:52:05,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:52:05,937 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:52:05,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:52:06,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-20 11:52:06,383 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:52:06,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-20 11:52:06,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 1756 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2022-11-20 11:52:06,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:08,197 INFO L134 CoverageAnalysis]: Checked inductivity of 8515 backedges. 1756 proven. 117 refuted. 0 times theorem prover too weak. 6642 trivial. 0 not checked. [2022-11-20 11:52:08,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939403244] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:08,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:52:08,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 21, 21] total 73 [2022-11-20 11:52:08,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478699719] [2022-11-20 11:52:08,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:08,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-20 11:52:08,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:08,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-20 11:52:08,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=728, Invalid=4528, Unknown=0, NotChecked=0, Total=5256 [2022-11-20 11:52:08,202 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) [2022-11-20 11:52:11,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:11,511 INFO L93 Difference]: Finished difference Result 1739 states and 1954 transitions. [2022-11-20 11:52:11,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-11-20 11:52:11,512 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 [2022-11-20 11:52:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:11,518 INFO L225 Difference]: With dead ends: 1739 [2022-11-20 11:52:11,519 INFO L226 Difference]: Without dead ends: 1423 [2022-11-20 11:52:11,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 845 GetRequests, 707 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4627 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=3164, Invalid=16296, Unknown=0, NotChecked=0, Total=19460 [2022-11-20 11:52:11,525 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 477 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 1508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:11,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 741 Invalid, 1508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:52:11,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-11-20 11:52:11,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 803. [2022-11-20 11:52:11,655 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) [2022-11-20 11:52:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 851 transitions. [2022-11-20 11:52:11,659 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 851 transitions. Word has length 359 [2022-11-20 11:52:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:11,659 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 851 transitions. [2022-11-20 11:52:11,659 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) [2022-11-20 11:52:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 851 transitions. [2022-11-20 11:52:11,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-11-20 11:52:11,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:11,664 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] [2022-11-20 11:52:11,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:11,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:52:11,880 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:52:11,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:11,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1921176138, now seen corresponding path program 10 times [2022-11-20 11:52:11,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:11,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495085562] [2022-11-20 11:52:11,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:11,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:52:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:13,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:14,807 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 6985 proven. 336 refuted. 0 times theorem prover too weak. 4071 trivial. 0 not checked. [2022-11-20 11:52:14,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:14,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495085562] [2022-11-20 11:52:14,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495085562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:52:14,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610842100] [2022-11-20 11:52:14,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:52:14,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:52:14,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:52:14,809 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:52:14,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:52:15,216 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:52:15,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:52:15,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 872 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 11:52:15,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 7596 proven. 1073 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2022-11-20 11:52:16,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11392 backedges. 7596 proven. 1073 refuted. 0 times theorem prover too weak. 2723 trivial. 0 not checked. [2022-11-20 11:52:26,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610842100] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:26,097 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:52:26,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 48, 48] total 65 [2022-11-20 11:52:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917862756] [2022-11-20 11:52:26,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-11-20 11:52:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:26,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-11-20 11:52:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3770, Unknown=0, NotChecked=0, Total=4160 [2022-11-20 11:52:26,100 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) [2022-11-20 11:52:30,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:30,608 INFO L93 Difference]: Finished difference Result 1552 states and 1640 transitions. [2022-11-20 11:52:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-11-20 11:52:30,608 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 [2022-11-20 11:52:30,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:30,623 INFO L225 Difference]: With dead ends: 1552 [2022-11-20 11:52:30,623 INFO L226 Difference]: Without dead ends: 1154 [2022-11-20 11:52:30,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 945 GetRequests, 731 SyntacticMatches, 46 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11136 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3583, Invalid=25147, Unknown=0, NotChecked=0, Total=28730 [2022-11-20 11:52:30,634 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 109 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 3338 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 3356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 3338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:30,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 534 Invalid, 3356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 3338 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:52:30,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-20 11:52:30,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1000. [2022-11-20 11:52:30,816 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) [2022-11-20 11:52:30,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 1053 transitions. [2022-11-20 11:52:30,822 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 1053 transitions. Word has length 388 [2022-11-20 11:52:30,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:30,823 INFO L495 AbstractCegarLoop]: Abstraction has 1000 states and 1053 transitions. [2022-11-20 11:52:30,823 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) [2022-11-20 11:52:30,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 1053 transitions. [2022-11-20 11:52:30,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2022-11-20 11:52:30,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:30,829 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] [2022-11-20 11:52:30,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:31,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:52:31,036 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:52:31,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:31,036 INFO L85 PathProgramCache]: Analyzing trace with hash 373178470, now seen corresponding path program 11 times [2022-11-20 11:52:31,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:31,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702724879] [2022-11-20 11:52:31,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:31,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:31,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:52:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:32,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:32,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 6812 proven. 420 refuted. 0 times theorem prover too weak. 4808 trivial. 0 not checked. [2022-11-20 11:52:33,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:33,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702724879] [2022-11-20 11:52:33,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702724879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:52:33,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954925130] [2022-11-20 11:52:33,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:52:33,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:52:33,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:52:33,526 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:52:33,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:52:34,102 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2022-11-20 11:52:34,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:52:34,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 11:52:34,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 8259 proven. 1615 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2022-11-20 11:52:35,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:52:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 12040 backedges. 8445 proven. 1429 refuted. 0 times theorem prover too weak. 2166 trivial. 0 not checked. [2022-11-20 11:52:42,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954925130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:52:42,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:52:42,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 48, 48] total 69 [2022-11-20 11:52:42,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495290039] [2022-11-20 11:52:42,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:52:42,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-20 11:52:42,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:42,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-20 11:52:42,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4229, Unknown=0, NotChecked=0, Total=4692 [2022-11-20 11:52:42,268 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) [2022-11-20 11:52:47,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:47,760 INFO L93 Difference]: Finished difference Result 1870 states and 1963 transitions. [2022-11-20 11:52:47,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-11-20 11:52:47,760 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 [2022-11-20 11:52:47,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:47,767 INFO L225 Difference]: With dead ends: 1870 [2022-11-20 11:52:47,767 INFO L226 Difference]: Without dead ends: 1448 [2022-11-20 11:52:47,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 765 SyntacticMatches, 43 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12463 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=4838, Invalid=30694, Unknown=0, NotChecked=0, Total=35532 [2022-11-20 11:52:47,773 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 130 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 3814 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 3814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:47,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 543 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 3814 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:52:47,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1448 states. [2022-11-20 11:52:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1448 to 1248. [2022-11-20 11:52:48,035 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) [2022-11-20 11:52:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1248 states to 1248 states and 1308 transitions. [2022-11-20 11:52:48,044 INFO L78 Accepts]: Start accepts. Automaton has 1248 states and 1308 transitions. Word has length 404 [2022-11-20 11:52:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:48,047 INFO L495 AbstractCegarLoop]: Abstraction has 1248 states and 1308 transitions. [2022-11-20 11:52:48,047 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) [2022-11-20 11:52:48,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1248 states and 1308 transitions. [2022-11-20 11:52:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2022-11-20 11:52:48,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:48,062 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] [2022-11-20 11:52:48,075 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:48,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:52:48,276 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:52:48,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:48,276 INFO L85 PathProgramCache]: Analyzing trace with hash 144455286, now seen corresponding path program 12 times [2022-11-20 11:52:48,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:48,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776503755] [2022-11-20 11:52:48,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:48,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:49,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:52:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:51,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:51,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:51,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:52,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:52,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:52,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:52,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:52,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:53,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:53,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:53,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:53,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:53,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:52:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:53,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 9009 proven. 1914 refuted. 0 times theorem prover too weak. 1638 trivial. 0 not checked. [2022-11-20 11:52:53,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:53,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776503755] [2022-11-20 11:52:53,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776503755] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:52:53,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255577883] [2022-11-20 11:52:53,519 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:52:53,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:52:53,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:52:53,520 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:52:53,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:52:54,148 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2022-11-20 11:52:54,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:52:54,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 846 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 11:52:54,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:55,829 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 580 proven. 10191 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2022-11-20 11:52:55,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:53:06,375 INFO L134 CoverageAnalysis]: Checked inductivity of 12561 backedges. 580 proven. 10191 refuted. 0 times theorem prover too weak. 1790 trivial. 0 not checked. [2022-11-20 11:53:06,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255577883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:53:06,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:53:06,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 37, 37] total 130 [2022-11-20 11:53:06,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553721698] [2022-11-20 11:53:06,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:53:06,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-11-20 11:53:06,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:53:06,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-11-20 11:53:06,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1345, Invalid=15425, Unknown=0, NotChecked=0, Total=16770 [2022-11-20 11:53:06,381 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) [2022-11-20 11:53:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:53:47,548 INFO L93 Difference]: Finished difference Result 4255 states and 4522 transitions. [2022-11-20 11:53:47,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 683 states. [2022-11-20 11:53:47,549 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 [2022-11-20 11:53:47,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:53:47,563 INFO L225 Difference]: With dead ends: 4255 [2022-11-20 11:53:47,563 INFO L226 Difference]: Without dead ends: 3470 [2022-11-20 11:53:47,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1579 GetRequests, 775 SyntacticMatches, 0 SemanticMatches, 804 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259569 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=53363, Invalid=595467, Unknown=0, NotChecked=0, Total=648830 [2022-11-20 11:53:47,617 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 1920 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 2899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:53:47,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1920 Valid, 1074 Invalid, 2899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 11:53:47,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3470 states. [2022-11-20 11:53:48,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3470 to 2784. [2022-11-20 11:53:48,043 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) [2022-11-20 11:53:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 2899 transitions. [2022-11-20 11:53:48,052 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 2899 transitions. Word has length 410 [2022-11-20 11:53:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:53:48,053 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 2899 transitions. [2022-11-20 11:53:48,054 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) [2022-11-20 11:53:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 2899 transitions. [2022-11-20 11:53:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 851 [2022-11-20 11:53:48,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:53:48,070 INFO L195 NwaCegarLoop]: trace histogram [201, 201, 201, 23, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 1, 1, 1, 1, 1, 1] [2022-11-20 11:53:48,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:53:48,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:48,279 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:53:48,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:53:48,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1472456966, now seen corresponding path program 13 times [2022-11-20 11:53:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:53:48,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759132212] [2022-11-20 11:53:48,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:53:48,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:53:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:49,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:53:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:51,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:52,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:52,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:52,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:53,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:54,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:54,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:55,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:55,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:56,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:56,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:57,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:57,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:57,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:57,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:57,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:58,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:53:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,121 INFO L134 CoverageAnalysis]: Checked inductivity of 67286 backedges. 1221 proven. 6 refuted. 0 times theorem prover too weak. 66059 trivial. 0 not checked. [2022-11-20 11:53:58,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:53:58,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759132212] [2022-11-20 11:53:58,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759132212] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:53:58,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065772950] [2022-11-20 11:53:58,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:53:58,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:53:58,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:53:58,123 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:53:58,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:53:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:53:58,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1926 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 11:53:58,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:53:59,077 INFO L134 CoverageAnalysis]: Checked inductivity of 67286 backedges. 1222 proven. 5 refuted. 0 times theorem prover too weak. 66059 trivial. 0 not checked. [2022-11-20 11:53:59,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:00,806 INFO L134 CoverageAnalysis]: Checked inductivity of 67286 backedges. 1222 proven. 5 refuted. 0 times theorem prover too weak. 66059 trivial. 0 not checked. [2022-11-20 11:54:00,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065772950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:00,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:00,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2022-11-20 11:54:00,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064101139] [2022-11-20 11:54:00,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:00,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:54:00,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:00,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:54:00,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:54:00,808 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) [2022-11-20 11:54:01,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:01,285 INFO L93 Difference]: Finished difference Result 4067 states and 4234 transitions. [2022-11-20 11:54:01,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:54:01,285 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 850 [2022-11-20 11:54:01,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:01,293 INFO L225 Difference]: With dead ends: 4067 [2022-11-20 11:54:01,293 INFO L226 Difference]: Without dead ends: 2035 [2022-11-20 11:54:01,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1775 GetRequests, 1751 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:54:01,301 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:01,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 150 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:54:01,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2035 states. [2022-11-20 11:54:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2035 to 2035. [2022-11-20 11:54:01,715 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) [2022-11-20 11:54:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 2118 transitions. [2022-11-20 11:54:01,721 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 2118 transitions. Word has length 850 [2022-11-20 11:54:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:01,721 INFO L495 AbstractCegarLoop]: Abstraction has 2035 states and 2118 transitions. [2022-11-20 11:54:01,721 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) [2022-11-20 11:54:01,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 2118 transitions. [2022-11-20 11:54:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2022-11-20 11:54:01,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:01,735 INFO L195 NwaCegarLoop]: trace histogram [203, 203, 203, 26, 25, 25, 25, 25, 23, 23, 23, 23, 22, 22, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:01,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:01,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:01,945 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:54:01,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:01,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1478425027, now seen corresponding path program 14 times [2022-11-20 11:54:01,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:01,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816392697] [2022-11-20 11:54:01,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:01,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:02,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:54:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:04,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:05,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:06,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:07,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:07,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:08,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:09,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:10,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:10,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:11,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:11,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:11,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:12,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:12,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:12,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 69224 backedges. 2783 proven. 30 refuted. 0 times theorem prover too weak. 66411 trivial. 0 not checked. [2022-11-20 11:54:12,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:12,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816392697] [2022-11-20 11:54:12,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816392697] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:12,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957089945] [2022-11-20 11:54:12,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:54:12,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:12,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:12,751 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:12,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:54:13,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:54:13,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:54:13,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 1981 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 11:54:13,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:13,762 INFO L134 CoverageAnalysis]: Checked inductivity of 69224 backedges. 2787 proven. 26 refuted. 0 times theorem prover too weak. 66411 trivial. 0 not checked. [2022-11-20 11:54:13,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 69224 backedges. 2787 proven. 26 refuted. 0 times theorem prover too weak. 66411 trivial. 0 not checked. [2022-11-20 11:54:16,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957089945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:16,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:16,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2022-11-20 11:54:16,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827599648] [2022-11-20 11:54:16,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:16,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-20 11:54:16,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:16,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-20 11:54:16,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:54:16,399 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) [2022-11-20 11:54:16,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:16,722 INFO L93 Difference]: Finished difference Result 2620 states and 2726 transitions. [2022-11-20 11:54:16,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:54:16,725 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 877 [2022-11-20 11:54:16,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:16,731 INFO L225 Difference]: With dead ends: 2620 [2022-11-20 11:54:16,731 INFO L226 Difference]: Without dead ends: 1337 [2022-11-20 11:54:16,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1841 GetRequests, 1802 SyntacticMatches, 13 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2022-11-20 11:54:16,737 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 50 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:16,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 123 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:54:16,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2022-11-20 11:54:16,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1337. [2022-11-20 11:54:16,993 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) [2022-11-20 11:54:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1337 states to 1337 states and 1390 transitions. [2022-11-20 11:54:16,998 INFO L78 Accepts]: Start accepts. Automaton has 1337 states and 1390 transitions. Word has length 877 [2022-11-20 11:54:16,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:16,998 INFO L495 AbstractCegarLoop]: Abstraction has 1337 states and 1390 transitions. [2022-11-20 11:54:16,999 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) [2022-11-20 11:54:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1337 states and 1390 transitions. [2022-11-20 11:54:17,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 888 [2022-11-20 11:54:17,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:17,011 INFO L195 NwaCegarLoop]: trace histogram [206, 206, 206, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:17,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:17,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 11:54:17,223 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:54:17,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:17,223 INFO L85 PathProgramCache]: Analyzing trace with hash 740343631, now seen corresponding path program 15 times [2022-11-20 11:54:17,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:17,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288005708] [2022-11-20 11:54:17,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:17,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:17,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:54:20,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:22,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:23,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:23,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:23,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:24,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 71350 backedges. 23396 proven. 615 refuted. 0 times theorem prover too weak. 47339 trivial. 0 not checked. [2022-11-20 11:54:24,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:24,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288005708] [2022-11-20 11:54:24,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288005708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:24,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880964223] [2022-11-20 11:54:24,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:54:24,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:24,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:24,738 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:24,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:54:25,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-11-20 11:54:25,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:54:25,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-20 11:54:25,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:26,576 INFO L134 CoverageAnalysis]: Checked inductivity of 71350 backedges. 17031 proven. 835 refuted. 0 times theorem prover too weak. 53484 trivial. 0 not checked. [2022-11-20 11:54:26,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:54:29,269 INFO L134 CoverageAnalysis]: Checked inductivity of 71350 backedges. 17031 proven. 835 refuted. 0 times theorem prover too weak. 53484 trivial. 0 not checked. [2022-11-20 11:54:29,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880964223] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:54:29,269 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:54:29,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 28, 28] total 103 [2022-11-20 11:54:29,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739424794] [2022-11-20 11:54:29,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:54:29,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-11-20 11:54:29,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:54:29,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-11-20 11:54:29,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1206, Invalid=9300, Unknown=0, NotChecked=0, Total=10506 [2022-11-20 11:54:29,276 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) [2022-11-20 11:54:39,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:54:39,218 INFO L93 Difference]: Finished difference Result 5324 states and 5959 transitions. [2022-11-20 11:54:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-11-20 11:54:39,219 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 887 [2022-11-20 11:54:39,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:54:39,241 INFO L225 Difference]: With dead ends: 5324 [2022-11-20 11:54:39,242 INFO L226 Difference]: Without dead ends: 4442 [2022-11-20 11:54:39,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2042 GetRequests, 1770 SyntacticMatches, 0 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21070 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=9711, Invalid=65091, Unknown=0, NotChecked=0, Total=74802 [2022-11-20 11:54:39,254 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 1268 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:54:39,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 895 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:54:39,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-11-20 11:54:39,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 1903. [2022-11-20 11:54:39,791 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) [2022-11-20 11:54:39,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1903 states to 1903 states and 1985 transitions. [2022-11-20 11:54:39,795 INFO L78 Accepts]: Start accepts. Automaton has 1903 states and 1985 transitions. Word has length 887 [2022-11-20 11:54:39,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:54:39,797 INFO L495 AbstractCegarLoop]: Abstraction has 1903 states and 1985 transitions. [2022-11-20 11:54:39,797 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) [2022-11-20 11:54:39,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1903 states and 1985 transitions. [2022-11-20 11:54:39,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2022-11-20 11:54:39,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:54:39,813 INFO L195 NwaCegarLoop]: trace histogram [232, 232, 232, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-20 11:54:39,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:54:40,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-20 11:54:40,028 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:54:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:54:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1352258977, now seen corresponding path program 16 times [2022-11-20 11:54:40,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:54:40,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142544358] [2022-11-20 11:54:40,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:54:40,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:54:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:42,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:54:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:44,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:47,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:48,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:48,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:48,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:54:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:54:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 89266 backedges. 40095 proven. 726 refuted. 0 times theorem prover too weak. 48445 trivial. 0 not checked. [2022-11-20 11:54:49,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:54:49,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142544358] [2022-11-20 11:54:49,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142544358] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:54:49,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185380156] [2022-11-20 11:54:49,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:54:49,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:54:49,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:54:49,747 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:54:49,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 11:54:50,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:54:50,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:54:50,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 2207 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-20 11:54:50,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:54:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 89266 backedges. 51655 proven. 3265 refuted. 0 times theorem prover too weak. 34346 trivial. 0 not checked. [2022-11-20 11:54:52,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:55:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 89266 backedges. 51655 proven. 3265 refuted. 0 times theorem prover too weak. 34346 trivial. 0 not checked. [2022-11-20 11:55:38,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185380156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:55:38,409 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:55:38,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 68, 68] total 93 [2022-11-20 11:55:38,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232739777] [2022-11-20 11:55:38,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:55:38,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2022-11-20 11:55:38,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:55:38,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2022-11-20 11:55:38,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=740, Invalid=7816, Unknown=0, NotChecked=0, Total=8556 [2022-11-20 11:55:38,413 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) [2022-11-20 11:55:49,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:55:49,045 INFO L93 Difference]: Finished difference Result 3777 states and 3942 transitions. [2022-11-20 11:55:49,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-11-20 11:55:49,046 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 975 [2022-11-20 11:55:49,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:55:49,055 INFO L225 Difference]: With dead ends: 3777 [2022-11-20 11:55:49,055 INFO L226 Difference]: Without dead ends: 2618 [2022-11-20 11:55:49,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2257 GetRequests, 1895 SyntacticMatches, 66 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33434 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=10796, Invalid=77710, Unknown=0, NotChecked=0, Total=88506 [2022-11-20 11:55:49,067 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 169 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 6406 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 6430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 6406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:55:49,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 681 Invalid, 6430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 6406 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 11:55:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-11-20 11:55:49,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2312. [2022-11-20 11:55:49,787 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) [2022-11-20 11:55:49,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2312 states to 2312 states and 2401 transitions. [2022-11-20 11:55:49,793 INFO L78 Accepts]: Start accepts. Automaton has 2312 states and 2401 transitions. Word has length 975 [2022-11-20 11:55:49,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:55:49,794 INFO L495 AbstractCegarLoop]: Abstraction has 2312 states and 2401 transitions. [2022-11-20 11:55:49,794 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) [2022-11-20 11:55:49,794 INFO L276 IsEmpty]: Start isEmpty. Operand 2312 states and 2401 transitions. [2022-11-20 11:55:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2022-11-20 11:55:49,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:55:49,809 INFO L195 NwaCegarLoop]: trace histogram [241, 241, 241, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-20 11:55:49,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 11:55:50,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 11:55:50,020 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:55:50,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:55:50,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1275650230, now seen corresponding path program 17 times [2022-11-20 11:55:50,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:55:50,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22505537] [2022-11-20 11:55:50,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:55:50,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:55:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:53,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:55:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:55:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:55:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:59,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:55:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:59,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:55:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:59,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:55:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:55:59,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:00,704 INFO L134 CoverageAnalysis]: Checked inductivity of 95854 backedges. 42958 proven. 846 refuted. 0 times theorem prover too weak. 52050 trivial. 0 not checked. [2022-11-20 11:56:00,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:00,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22505537] [2022-11-20 11:56:00,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22505537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:56:00,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358569221] [2022-11-20 11:56:00,706 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:56:00,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:56:00,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:56:00,707 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:56:00,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 11:56:02,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2022-11-20 11:56:02,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:56:02,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 66 conjunts are in the unsatisfiable core [2022-11-20 11:56:02,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:56:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 95854 backedges. 58868 proven. 4643 refuted. 0 times theorem prover too weak. 32343 trivial. 0 not checked. [2022-11-20 11:56:03,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:56:35,652 INFO L134 CoverageAnalysis]: Checked inductivity of 95854 backedges. 59724 proven. 3787 refuted. 0 times theorem prover too weak. 32343 trivial. 0 not checked. [2022-11-20 11:56:35,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358569221] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:56:35,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:56:35,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 66, 66] total 95 [2022-11-20 11:56:35,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115799719] [2022-11-20 11:56:35,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:56:35,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-11-20 11:56:35,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:56:35,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-11-20 11:56:35,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=862, Invalid=8068, Unknown=0, NotChecked=0, Total=8930 [2022-11-20 11:56:35,657 INFO L87 Difference]: Start difference. First operand 2312 states and 2401 transitions. Second operand has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 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) [2022-11-20 11:56:47,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:56:47,069 INFO L93 Difference]: Finished difference Result 4111 states and 4269 transitions. [2022-11-20 11:56:47,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 231 states. [2022-11-20 11:56:47,070 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 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 1002 [2022-11-20 11:56:47,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:56:47,082 INFO L225 Difference]: With dead ends: 4111 [2022-11-20 11:56:47,082 INFO L226 Difference]: Without dead ends: 3122 [2022-11-20 11:56:47,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2324 GetRequests, 1960 SyntacticMatches, 57 SemanticMatches, 307 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32811 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=12888, Invalid=82284, Unknown=0, NotChecked=0, Total=95172 [2022-11-20 11:56:47,097 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 206 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 6995 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 7028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 6995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:56:47,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 903 Invalid, 7028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 6995 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 11:56:47,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-11-20 11:56:47,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 2752. [2022-11-20 11:56:47,858 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) [2022-11-20 11:56:47,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 2849 transitions. [2022-11-20 11:56:47,865 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 2849 transitions. Word has length 1002 [2022-11-20 11:56:47,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:56:47,866 INFO L495 AbstractCegarLoop]: Abstraction has 2752 states and 2849 transitions. [2022-11-20 11:56:47,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 2.126315789473684) internal successors, (202), 85 states have internal predecessors, (202), 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) [2022-11-20 11:56:47,867 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 2849 transitions. [2022-11-20 11:56:47,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1027 [2022-11-20 11:56:47,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:56:47,882 INFO L195 NwaCegarLoop]: trace histogram [249, 249, 249, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-20 11:56:47,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:56:48,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-20 11:56:48,095 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:56:48,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:56:48,096 INFO L85 PathProgramCache]: Analyzing trace with hash 8901130, now seen corresponding path program 18 times [2022-11-20 11:56:48,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:56:48,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787396928] [2022-11-20 11:56:48,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:56:48,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:56:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:56:51,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:53,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:55,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:57,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:56:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:56:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 101914 backedges. 45682 proven. 975 refuted. 0 times theorem prover too weak. 55257 trivial. 0 not checked. [2022-11-20 11:56:58,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:56:58,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787396928] [2022-11-20 11:56:58,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787396928] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:56:58,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731533632] [2022-11-20 11:56:58,689 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 11:56:58,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:56:58,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:56:58,691 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:56:58,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 11:57:00,753 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 33 check-sat command(s) [2022-11-20 11:57:00,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:57:00,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 11:57:00,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:57:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 101914 backedges. 36147 proven. 3936 refuted. 0 times theorem prover too weak. 61831 trivial. 0 not checked. [2022-11-20 11:57:02,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:57:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 101914 backedges. 36147 proven. 3936 refuted. 0 times theorem prover too weak. 61831 trivial. 0 not checked. [2022-11-20 11:57:06,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731533632] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:57:06,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:57:06,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 37, 37] total 133 [2022-11-20 11:57:06,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772249889] [2022-11-20 11:57:06,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:57:07,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 133 states [2022-11-20 11:57:07,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:57:07,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 133 interpolants. [2022-11-20 11:57:07,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1875, Invalid=15681, Unknown=0, NotChecked=0, Total=17556 [2022-11-20 11:57:07,004 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) [2022-11-20 11:57:28,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:57:28,059 INFO L93 Difference]: Finished difference Result 10301 states and 11361 transitions. [2022-11-20 11:57:28,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 314 states. [2022-11-20 11:57:28,059 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 1026 [2022-11-20 11:57:28,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:57:28,082 INFO L225 Difference]: With dead ends: 10301 [2022-11-20 11:57:28,082 INFO L226 Difference]: Without dead ends: 9080 [2022-11-20 11:57:28,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2470 GetRequests, 2031 SyntacticMatches, 0 SemanticMatches, 439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61790 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=22403, Invalid=171637, Unknown=0, NotChecked=0, Total=194040 [2022-11-20 11:57:28,097 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 2661 mSDsluCounter, 1082 mSDsCounter, 0 mSdLazyCounter, 3787 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2661 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 4337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 3787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:57:28,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2661 Valid, 1124 Invalid, 4337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 3787 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 11:57:28,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9080 states. [2022-11-20 11:57:28,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9080 to 3360. [2022-11-20 11:57:28,918 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) [2022-11-20 11:57:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3360 states to 3360 states and 3492 transitions. [2022-11-20 11:57:28,925 INFO L78 Accepts]: Start accepts. Automaton has 3360 states and 3492 transitions. Word has length 1026 [2022-11-20 11:57:28,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:57:28,926 INFO L495 AbstractCegarLoop]: Abstraction has 3360 states and 3492 transitions. [2022-11-20 11:57:28,926 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) [2022-11-20 11:57:28,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3360 states and 3492 transitions. [2022-11-20 11:57:28,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1116 [2022-11-20 11:57:28,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:57:28,945 INFO L195 NwaCegarLoop]: trace histogram [282, 282, 282, 25, 24, 24, 24, 24, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-20 11:57:28,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:57:29,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-20 11:57:29,159 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:57:29,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:57:29,159 INFO L85 PathProgramCache]: Analyzing trace with hash 323775503, now seen corresponding path program 19 times [2022-11-20 11:57:29,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:57:29,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340295711] [2022-11-20 11:57:29,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:57:29,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:57:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:57:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:43,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:43,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:43,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:57:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:44,517 INFO L134 CoverageAnalysis]: Checked inductivity of 128692 backedges. 69838 proven. 1113 refuted. 0 times theorem prover too weak. 57741 trivial. 0 not checked. [2022-11-20 11:57:44,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:57:44,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340295711] [2022-11-20 11:57:44,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340295711] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:57:44,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396738230] [2022-11-20 11:57:44,518 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 11:57:44,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:57:44,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:57:44,523 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:57:44,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 11:57:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:57:46,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 2539 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-20 11:57:46,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:57:49,149 INFO L134 CoverageAnalysis]: Checked inductivity of 128692 backedges. 86003 proven. 6106 refuted. 0 times theorem prover too weak. 36583 trivial. 0 not checked. [2022-11-20 11:57:49,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:58:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 128692 backedges. 86003 proven. 6106 refuted. 0 times theorem prover too weak. 36583 trivial. 0 not checked. [2022-11-20 11:58:54,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396738230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:58:54,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:58:54,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 83, 83] total 114 [2022-11-20 11:58:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749903710] [2022-11-20 11:58:54,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:58:54,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-11-20 11:58:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:54,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-11-20 11:58:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1076, Invalid=11806, Unknown=0, NotChecked=0, Total=12882 [2022-11-20 11:58:54,787 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) [2022-11-20 11:59:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:15,319 INFO L93 Difference]: Finished difference Result 5650 states and 5874 transitions. [2022-11-20 11:59:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2022-11-20 11:59:15,320 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 1115 [2022-11-20 11:59:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:15,332 INFO L225 Difference]: With dead ends: 5650 [2022-11-20 11:59:15,332 INFO L226 Difference]: Without dead ends: 4463 [2022-11-20 11:59:15,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2646 GetRequests, 2152 SyntacticMatches, 81 SemanticMatches, 413 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64190 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=20831, Invalid=150979, Unknown=0, NotChecked=0, Total=171810 [2022-11-20 11:59:15,357 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 199 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 13996 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1213 SdHoareTripleChecker+Invalid, 14026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:15,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1213 Invalid, 14026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 13996 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 11:59:15,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2022-11-20 11:59:16,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3947. [2022-11-20 11:59:16,627 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) [2022-11-20 11:59:16,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3947 states to 3947 states and 4088 transitions. [2022-11-20 11:59:16,632 INFO L78 Accepts]: Start accepts. Automaton has 3947 states and 4088 transitions. Word has length 1115 [2022-11-20 11:59:16,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:16,632 INFO L495 AbstractCegarLoop]: Abstraction has 3947 states and 4088 transitions. [2022-11-20 11:59:16,632 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) [2022-11-20 11:59:16,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3947 states and 4088 transitions. [2022-11-20 11:59:16,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1141 [2022-11-20 11:59:16,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:16,654 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] [2022-11-20 11:59:16,668 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-11-20 11:59:16,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-20 11:59:16,863 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 11:59:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1864592074, now seen corresponding path program 20 times [2022-11-20 11:59:16,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:59:16,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801781787] [2022-11-20 11:59:16,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:16,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:59:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:59:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:24,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:24,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:26,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:29,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:29,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:31,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:59:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 72514 proven. 1266 refuted. 0 times theorem prover too weak. 59541 trivial. 0 not checked. [2022-11-20 11:59:32,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:32,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801781787] [2022-11-20 11:59:32,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801781787] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:59:32,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777227325] [2022-11-20 11:59:32,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:59:32,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:32,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:32,323 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:59:32,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 11:59:35,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:59:35,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:59:35,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-20 11:59:35,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:37,997 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 94098 proven. 7329 refuted. 0 times theorem prover too weak. 31894 trivial. 0 not checked. [2022-11-20 11:59:37,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:49,871 INFO L134 CoverageAnalysis]: Checked inductivity of 133321 backedges. 94098 proven. 7329 refuted. 0 times theorem prover too weak. 31894 trivial. 0 not checked. [2022-11-20 12:00:49,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777227325] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:49,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:00:49,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 88, 88] total 119 [2022-11-20 12:00:49,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108849309] [2022-11-20 12:00:49,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:49,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 119 states [2022-11-20 12:00:49,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:00:49,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2022-11-20 12:00:49,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1129, Invalid=12913, Unknown=0, NotChecked=0, Total=14042 [2022-11-20 12:00:49,877 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) [2022-11-20 12:01:14,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:14,166 INFO L93 Difference]: Finished difference Result 6451 states and 6682 transitions. [2022-11-20 12:01:14,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 359 states. [2022-11-20 12:01:14,167 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 [2022-11-20 12:01:14,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:14,176 INFO L225 Difference]: With dead ends: 6451 [2022-11-20 12:01:14,176 INFO L226 Difference]: Without dead ends: 5216 [2022-11-20 12:01:14,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2737 GetRequests, 2196 SyntacticMatches, 86 SemanticMatches, 455 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76024 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=25312, Invalid=183080, Unknown=0, NotChecked=0, Total=208392 [2022-11-20 12:01:14,190 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 212 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 13125 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 13157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 13125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:14,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 804 Invalid, 13157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 13125 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-20 12:01:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5216 states. [2022-11-20 12:01:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5216 to 4618. [2022-11-20 12:01:15,654 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) [2022-11-20 12:01:15,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 4769 transitions. [2022-11-20 12:01:15,661 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 4769 transitions. Word has length 1140 [2022-11-20 12:01:15,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:15,662 INFO L495 AbstractCegarLoop]: Abstraction has 4618 states and 4769 transitions. [2022-11-20 12:01:15,662 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) [2022-11-20 12:01:15,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 4769 transitions. [2022-11-20 12:01:15,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1143 [2022-11-20 12:01:15,679 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:15,679 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] [2022-11-20 12:01:15,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:15,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 12:01:15,885 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:01:15,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash -852577910, now seen corresponding path program 21 times [2022-11-20 12:01:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:01:15,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299142835] [2022-11-20 12:01:15,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:01:15,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:01:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:19,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:01:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:23,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:26,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:28,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:30,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:30,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:30,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:01:31,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:01:31,395 INFO L134 CoverageAnalysis]: Checked inductivity of 136630 backedges. 74873 proven. 1416 refuted. 0 times theorem prover too weak. 60341 trivial. 0 not checked. [2022-11-20 12:01:31,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:01:31,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299142835] [2022-11-20 12:01:31,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299142835] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:01:31,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815988184] [2022-11-20 12:01:31,396 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:01:31,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:01:31,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:01:31,399 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:01:31,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 12:01:35,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-11-20 12:01:35,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:35,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1530 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-20 12:01:35,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:01:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 136630 backedges. 61581 proven. 12767 refuted. 0 times theorem prover too weak. 62282 trivial. 0 not checked. [2022-11-20 12:01:37,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:45,743 INFO L134 CoverageAnalysis]: Checked inductivity of 136630 backedges. 61581 proven. 12767 refuted. 0 times theorem prover too weak. 62282 trivial. 0 not checked. [2022-11-20 12:01:45,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815988184] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:45,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:01:45,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 46, 46] total 163 [2022-11-20 12:01:45,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939902635] [2022-11-20 12:01:45,744 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:45,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 163 states [2022-11-20 12:01:45,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:01:45,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 163 interpolants. [2022-11-20 12:01:45,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2694, Invalid=23712, Unknown=0, NotChecked=0, Total=26406 [2022-11-20 12:01:45,750 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) [2022-11-20 12:02:25,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:02:25,634 INFO L93 Difference]: Finished difference Result 16725 states and 18288 transitions. [2022-11-20 12:02:25,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 487 states. [2022-11-20 12:02:25,635 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 [2022-11-20 12:02:25,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:02:25,669 INFO L225 Difference]: With dead ends: 16725 [2022-11-20 12:02:25,669 INFO L226 Difference]: Without dead ends: 15117 [2022-11-20 12:02:25,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2888 GetRequests, 2246 SyntacticMatches, 0 SemanticMatches, 642 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142635 ImplicationChecksByTransitivity, 37.5s TimeCoverageRelationStatistics Valid=43273, Invalid=370819, Unknown=0, NotChecked=0, Total=414092 [2022-11-20 12:02:25,706 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 4623 mSDsluCounter, 1110 mSDsCounter, 0 mSdLazyCounter, 4499 mSolverCounterSat, 968 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4623 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 5467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 968 IncrementalHoareTripleChecker+Valid, 4499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:02:25,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4623 Valid, 1158 Invalid, 5467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [968 Valid, 4499 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-20 12:02:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15117 states. [2022-11-20 12:02:27,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15117 to 5554. [2022-11-20 12:02:27,999 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) [2022-11-20 12:02:28,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 5752 transitions. [2022-11-20 12:02:28,009 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 5752 transitions. Word has length 1142 [2022-11-20 12:02:28,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:02:28,010 INFO L495 AbstractCegarLoop]: Abstraction has 5554 states and 5752 transitions. [2022-11-20 12:02:28,010 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) [2022-11-20 12:02:28,010 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 5752 transitions. [2022-11-20 12:02:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1270 [2022-11-20 12:02:28,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:02:28,034 INFO L195 NwaCegarLoop]: trace histogram [330, 330, 330, 27, 26, 26, 26, 26, 24, 24, 24, 24, 23, 23, 1, 1, 1, 1, 1, 1] [2022-11-20 12:02:28,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:02:28,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 12:02:28,257 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2022-11-20 12:02:28,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:02:28,257 INFO L85 PathProgramCache]: Analyzing trace with hash -301827569, now seen corresponding path program 22 times [2022-11-20 12:02:28,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:02:28,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509766178] [2022-11-20 12:02:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:02:28,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:02:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:34,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 12:02:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:02:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:43,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:02:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:46,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:02:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:49,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:02:49,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:52,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:02:52,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:54,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:02:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:56,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:02:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:02:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:58,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:02:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:02:59,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:02:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:00,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:02,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:02,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:02,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:03,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:03,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:03,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 174085 backedges. 86376 proven. 35970 refuted. 0 times theorem prover too weak. 51739 trivial. 0 not checked. [2022-11-20 12:03:03,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:03,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509766178] [2022-11-20 12:03:03,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509766178] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:03:03,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847790754] [2022-11-20 12:03:03,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 12:03:03,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:03:03,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:03,920 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:03:03,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29181c29-84a5-4da1-af5a-a0407a8e3b5b/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 12:03:07,720 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 12:03:07,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:03:07,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 90 conjunts are in the unsatisfiable core [2022-11-20 12:03:07,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 174085 backedges. 86425 proven. 35921 refuted. 0 times theorem prover too weak. 51739 trivial. 0 not checked. [2022-11-20 12:03:08,645 INFO L328 TraceCheckSpWp]: Computing backward predicates...