./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/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_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/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 32bit --witnessprinter.graph.data.programhash 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b --- 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 12:35:41,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:35:41,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:35:41,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:35:41,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:35:41,236 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:35:41,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:35:41,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:35:41,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:35:41,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:35:41,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:35:41,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:35:41,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:35:41,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:35:41,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:35:41,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:35:41,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:35:41,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:35:41,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:35:41,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:35:41,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:35:41,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:35:41,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:35:41,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:35:41,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:35:41,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:35:41,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:35:41,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:35:41,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:35:41,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:35:41,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:35:41,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:35:41,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:35:41,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:35:41,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:35:41,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:35:41,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:35:41,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:35:41,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:35:41,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:35:41,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:35:41,282 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:35:41,304 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:35:41,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:35:41,305 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:35:41,305 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:35:41,306 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:35:41,306 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:35:41,307 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:35:41,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:35:41,307 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:35:41,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:35:41,308 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:35:41,308 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:35:41,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:35:41,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:35:41,309 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:35:41,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:35:41,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:35:41,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:35:41,310 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:35:41,310 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:35:41,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:35:41,311 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:35:41,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:35:41,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:35:41,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:35:41,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:35:41,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:35:41,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:35:41,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:35:41,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:35:41,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:35:41,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:35:41,314 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:35:41,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:35:41,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:35:41,315 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_d0b36288-04a1-434c-84b7-1c515a67da22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 795c382fbb0026f2f6f7212254176553809c7311a8058a10cea47f6b1b03373b [2022-11-20 12:35:41,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:35:41,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:35:41,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:35:41,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:35:41,569 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:35:41,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-20 12:35:44,567 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:35:44,817 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:35:44,818 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c [2022-11-20 12:35:44,826 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/data/fc90f70d7/77a4040de5614dc0bf28b28f353c2747/FLAG9f8b39866 [2022-11-20 12:35:44,841 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/data/fc90f70d7/77a4040de5614dc0bf28b28f353c2747 [2022-11-20 12:35:44,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:35:44,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:35:44,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:35:44,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:35:44,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:35:44,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:35:44" (1/1) ... [2022-11-20 12:35:44,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c3d3c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:44, skipping insertion in model container [2022-11-20 12:35:44,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:35:44" (1/1) ... [2022-11-20 12:35:44,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:35:44,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:35:45,116 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-20 12:35:45,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:35:45,134 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:35:45,162 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/sv-benchmarks/c/weaver/chl-chromosome-trans.wvr.c[3034,3047] [2022-11-20 12:35:45,171 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:35:45,192 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:35:45,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45 WrapperNode [2022-11-20 12:35:45,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:35:45,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:35:45,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:35:45,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:35:45,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,280 INFO L138 Inliner]: procedures = 26, calls = 46, calls flagged for inlining = 16, calls inlined = 24, statements flattened = 325 [2022-11-20 12:35:45,282 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:35:45,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:35:45,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:35:45,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:35:45,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,293 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,329 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:35:45,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:35:45,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:35:45,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:35:45,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (1/1) ... [2022-11-20 12:35:45,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:35:45,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:45,390 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:35:45,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:35:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:35:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:35:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:35:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:35:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 12:35:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 12:35:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 12:35:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 12:35:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-20 12:35:45,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-20 12:35:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:35:45,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:35:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:35:45,436 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:35:45,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:35:45,438 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:35:45,558 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:35:45,569 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:35:46,409 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:35:46,423 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:35:46,424 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-20 12:35:46,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:35:46 BoogieIcfgContainer [2022-11-20 12:35:46,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:35:46,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:35:46,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:35:46,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:35:46,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:35:44" (1/3) ... [2022-11-20 12:35:46,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cd69bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:35:46, skipping insertion in model container [2022-11-20 12:35:46,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:35:45" (2/3) ... [2022-11-20 12:35:46,436 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cd69bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:35:46, skipping insertion in model container [2022-11-20 12:35:46,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:35:46" (3/3) ... [2022-11-20 12:35:46,437 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-trans.wvr.c [2022-11-20 12:35:46,447 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:35:46,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:35:46,459 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-20 12:35:46,459 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:35:46,623 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 12:35:46,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 421 places, 445 transitions, 914 flow [2022-11-20 12:35:46,875 INFO L130 PetriNetUnfolder]: 34/442 cut-off events. [2022-11-20 12:35:46,875 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 12:35:46,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 442 events. 34/442 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 941 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 336. Up to 2 conditions per place. [2022-11-20 12:35:46,891 INFO L82 GeneralOperation]: Start removeDead. Operand has 421 places, 445 transitions, 914 flow [2022-11-20 12:35:46,902 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 398 places, 421 transitions, 857 flow [2022-11-20 12:35:46,916 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:35:46,924 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;@404a14ad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:35:46,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2022-11-20 12:35:46,935 INFO L130 PetriNetUnfolder]: 3/61 cut-off events. [2022-11-20 12:35:46,935 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:35:46,936 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:46,937 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:46,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:35:46,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:46,943 INFO L85 PathProgramCache]: Analyzing trace with hash 94852886, now seen corresponding path program 1 times [2022-11-20 12:35:46,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:46,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670714708] [2022-11-20 12:35:46,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:46,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:47,372 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 12:35:47,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:47,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670714708] [2022-11-20 12:35:47,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670714708] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:47,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:47,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:35:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727181453] [2022-11-20 12:35:47,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:47,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:35:47,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:47,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:35:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:35:47,449 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-20 12:35:47,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 421 transitions, 857 flow. Second operand has 4 states, 4 states have (on average 381.5) internal successors, (1526), 4 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:47,458 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:47,458 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-20 12:35:47,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:47,857 INFO L130 PetriNetUnfolder]: 23/709 cut-off events. [2022-11-20 12:35:47,857 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-20 12:35:47,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 709 events. 23/709 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2748 event pairs, 0 based on Foata normal form. 52/659 useless extension candidates. Maximal degree in co-relation 613. Up to 44 conditions per place. [2022-11-20 12:35:47,873 INFO L137 encePairwiseOnDemand]: 404/445 looper letters, 58 selfloop transitions, 14 changer transitions 6/431 dead transitions. [2022-11-20 12:35:47,874 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 431 transitions, 1036 flow [2022-11-20 12:35:47,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:35:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:35:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2014 transitions. [2022-11-20 12:35:47,902 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9051685393258427 [2022-11-20 12:35:47,904 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2014 transitions. [2022-11-20 12:35:47,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2014 transitions. [2022-11-20 12:35:47,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:47,910 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2014 transitions. [2022-11-20 12:35:47,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 402.8) internal successors, (2014), 5 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:47,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:47,937 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:47,939 INFO L175 Difference]: Start difference. First operand has 398 places, 421 transitions, 857 flow. Second operand 5 states and 2014 transitions. [2022-11-20 12:35:47,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 431 transitions, 1036 flow [2022-11-20 12:35:47,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 431 transitions, 1018 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-20 12:35:47,955 INFO L231 Difference]: Finished difference. Result has 400 places, 405 transitions, 898 flow [2022-11-20 12:35:47,958 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=898, PETRI_PLACES=400, PETRI_TRANSITIONS=405} [2022-11-20 12:35:47,962 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 2 predicate places. [2022-11-20 12:35:47,962 INFO L495 AbstractCegarLoop]: Abstraction has has 400 places, 405 transitions, 898 flow [2022-11-20 12:35:47,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 381.5) internal successors, (1526), 4 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:47,964 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:47,964 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:47,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:35:47,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:35:47,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:47,966 INFO L85 PathProgramCache]: Analyzing trace with hash -242839437, now seen corresponding path program 1 times [2022-11-20 12:35:47,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:47,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596124797] [2022-11-20 12:35:47,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:47,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:48,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:48,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:48,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596124797] [2022-11-20 12:35:48,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596124797] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:48,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958862949] [2022-11-20 12:35:48,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:48,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:48,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:48,259 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:48,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:35:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:48,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:35:48,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:48,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:48,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:48,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958862949] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:48,611 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:48,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-20 12:35:48,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917060161] [2022-11-20 12:35:48,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:48,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:35:48,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:35:48,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:35:48,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-20 12:35:48,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 405 transitions, 898 flow. Second operand has 12 states, 12 states have (on average 382.6666666666667) internal successors, (4592), 12 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:48,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:48,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-20 12:35:48,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:49,734 INFO L130 PetriNetUnfolder]: 56/1636 cut-off events. [2022-11-20 12:35:49,734 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-20 12:35:49,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1914 conditions, 1636 events. 56/1636 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10021 event pairs, 0 based on Foata normal form. 9/1420 useless extension candidates. Maximal degree in co-relation 1176. Up to 35 conditions per place. [2022-11-20 12:35:49,766 INFO L137 encePairwiseOnDemand]: 422/445 looper letters, 109 selfloop transitions, 62 changer transitions 0/524 dead transitions. [2022-11-20 12:35:49,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 524 transitions, 1580 flow [2022-11-20 12:35:49,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:35:49,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:35:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 7020 transitions. [2022-11-20 12:35:49,780 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8764044943820225 [2022-11-20 12:35:49,780 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 7020 transitions. [2022-11-20 12:35:49,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 7020 transitions. [2022-11-20 12:35:49,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:49,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 7020 transitions. [2022-11-20 12:35:49,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 390.0) internal successors, (7020), 18 states have internal predecessors, (7020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:49,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 445.0) internal successors, (8455), 19 states have internal predecessors, (8455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:49,828 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 445.0) internal successors, (8455), 19 states have internal predecessors, (8455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:49,828 INFO L175 Difference]: Start difference. First operand has 400 places, 405 transitions, 898 flow. Second operand 18 states and 7020 transitions. [2022-11-20 12:35:49,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 524 transitions, 1580 flow [2022-11-20 12:35:49,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 524 transitions, 1572 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:35:49,840 INFO L231 Difference]: Finished difference. Result has 414 places, 447 transitions, 1260 flow [2022-11-20 12:35:49,841 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1260, PETRI_PLACES=414, PETRI_TRANSITIONS=447} [2022-11-20 12:35:49,842 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 16 predicate places. [2022-11-20 12:35:49,842 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 447 transitions, 1260 flow [2022-11-20 12:35:49,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 382.6666666666667) internal successors, (4592), 12 states have internal predecessors, (4592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:49,846 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:49,846 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:49,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:50,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:50,052 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:35:50,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:50,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1061913060, now seen corresponding path program 1 times [2022-11-20 12:35:50,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:50,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805627002] [2022-11-20 12:35:50,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:50,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:50,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:50,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805627002] [2022-11-20 12:35:50,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805627002] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:50,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073839600] [2022-11-20 12:35:50,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:50,188 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:50,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:50,190 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:50,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:35:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:50,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:35:50,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:50,402 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:35:50,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073839600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:50,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:35:50,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:35:50,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128058650] [2022-11-20 12:35:50,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:50,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:35:50,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:50,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:35:50,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:35:50,407 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-20 12:35:50,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 447 transitions, 1260 flow. Second operand has 6 states, 6 states have (on average 382.3333333333333) internal successors, (2294), 6 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:50,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:50,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-20 12:35:50,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:51,051 INFO L130 PetriNetUnfolder]: 56/1624 cut-off events. [2022-11-20 12:35:51,051 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-20 12:35:51,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 1624 events. 56/1624 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9962 event pairs, 0 based on Foata normal form. 12/1411 useless extension candidates. Maximal degree in co-relation 1529. Up to 68 conditions per place. [2022-11-20 12:35:51,078 INFO L137 encePairwiseOnDemand]: 428/445 looper letters, 59 selfloop transitions, 43 changer transitions 0/455 dead transitions. [2022-11-20 12:35:51,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 455 transitions, 1435 flow [2022-11-20 12:35:51,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:35:51,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:35:51,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2732 transitions. [2022-11-20 12:35:51,084 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8770465489566613 [2022-11-20 12:35:51,084 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2732 transitions. [2022-11-20 12:35:51,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2732 transitions. [2022-11-20 12:35:51,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:51,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2732 transitions. [2022-11-20 12:35:51,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 390.2857142857143) internal successors, (2732), 7 states have internal predecessors, (2732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:51,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:51,100 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 445.0) internal successors, (3560), 8 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:51,100 INFO L175 Difference]: Start difference. First operand has 414 places, 447 transitions, 1260 flow. Second operand 7 states and 2732 transitions. [2022-11-20 12:35:51,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 455 transitions, 1435 flow [2022-11-20 12:35:51,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 455 transitions, 1319 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-20 12:35:51,113 INFO L231 Difference]: Finished difference. Result has 408 places, 435 transitions, 1149 flow [2022-11-20 12:35:51,114 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1063, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1149, PETRI_PLACES=408, PETRI_TRANSITIONS=435} [2022-11-20 12:35:51,115 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 10 predicate places. [2022-11-20 12:35:51,115 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 435 transitions, 1149 flow [2022-11-20 12:35:51,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 382.3333333333333) internal successors, (2294), 6 states have internal predecessors, (2294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:51,116 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:51,117 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:51,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:51,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:51,323 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:35:51,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1451040682, now seen corresponding path program 2 times [2022-11-20 12:35:51,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:51,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673617415] [2022-11-20 12:35:51,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:51,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:51,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:51,595 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:35:51,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:51,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673617415] [2022-11-20 12:35:51,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673617415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:51,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081170263] [2022-11-20 12:35:51,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:51,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:51,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:51,598 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:51,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:35:51,720 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-20 12:35:51,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:51,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:35:51,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:51,861 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:35:51,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:52,024 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-20 12:35:52,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081170263] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:52,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:52,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-20 12:35:52,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317905997] [2022-11-20 12:35:52,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:52,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:35:52,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:52,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:35:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:35:52,034 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 445 [2022-11-20 12:35:52,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 435 transitions, 1149 flow. Second operand has 18 states, 18 states have (on average 369.0) internal successors, (6642), 18 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:52,057 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:52,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 445 [2022-11-20 12:35:52,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:53,234 INFO L130 PetriNetUnfolder]: 67/1909 cut-off events. [2022-11-20 12:35:53,234 INFO L131 PetriNetUnfolder]: For 189/189 co-relation queries the response was YES. [2022-11-20 12:35:53,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 1909 events. 67/1909 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 12368 event pairs, 0 based on Foata normal form. 3/1642 useless extension candidates. Maximal degree in co-relation 1541. Up to 22 conditions per place. [2022-11-20 12:35:53,270 INFO L137 encePairwiseOnDemand]: 421/445 looper letters, 130 selfloop transitions, 67 changer transitions 0/535 dead transitions. [2022-11-20 12:35:53,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 535 transitions, 1790 flow [2022-11-20 12:35:53,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 12:35:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-20 12:35:53,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 7500 transitions. [2022-11-20 12:35:53,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8426966292134831 [2022-11-20 12:35:53,287 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 7500 transitions. [2022-11-20 12:35:53,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 7500 transitions. [2022-11-20 12:35:53,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:53,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 7500 transitions. [2022-11-20 12:35:53,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 375.0) internal successors, (7500), 20 states have internal predecessors, (7500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:53,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 445.0) internal successors, (9345), 21 states have internal predecessors, (9345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:53,330 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 445.0) internal successors, (9345), 21 states have internal predecessors, (9345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:53,330 INFO L175 Difference]: Start difference. First operand has 408 places, 435 transitions, 1149 flow. Second operand 20 states and 7500 transitions. [2022-11-20 12:35:53,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 535 transitions, 1790 flow [2022-11-20 12:35:53,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 535 transitions, 1707 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-20 12:35:53,342 INFO L231 Difference]: Finished difference. Result has 416 places, 440 transitions, 1223 flow [2022-11-20 12:35:53,342 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1223, PETRI_PLACES=416, PETRI_TRANSITIONS=440} [2022-11-20 12:35:53,343 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 18 predicate places. [2022-11-20 12:35:53,343 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 440 transitions, 1223 flow [2022-11-20 12:35:53,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 369.0) internal successors, (6642), 18 states have internal predecessors, (6642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:53,346 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:53,346 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:53,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 12:35:53,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:53,551 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:35:53,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:53,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1273339182, now seen corresponding path program 1 times [2022-11-20 12:35:53,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:53,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665186172] [2022-11-20 12:35:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:53,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:53,728 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 12:35:53,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:53,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665186172] [2022-11-20 12:35:53,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665186172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:35:53,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:35:53,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:35:53,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082487400] [2022-11-20 12:35:53,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:35:53,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:35:53,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:53,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:35:53,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:35:53,732 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 445 [2022-11-20 12:35:53,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 440 transitions, 1223 flow. Second operand has 5 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:53,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:53,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 445 [2022-11-20 12:35:53,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:54,222 INFO L130 PetriNetUnfolder]: 56/1627 cut-off events. [2022-11-20 12:35:54,222 INFO L131 PetriNetUnfolder]: For 245/245 co-relation queries the response was YES. [2022-11-20 12:35:54,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1971 conditions, 1627 events. 56/1627 cut-off events. For 245/245 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 9645 event pairs, 0 based on Foata normal form. 3/1420 useless extension candidates. Maximal degree in co-relation 292. Up to 116 conditions per place. [2022-11-20 12:35:54,253 INFO L137 encePairwiseOnDemand]: 430/445 looper letters, 62 selfloop transitions, 20 changer transitions 0/444 dead transitions. [2022-11-20 12:35:54,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 444 transitions, 1391 flow [2022-11-20 12:35:54,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:35:54,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:35:54,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1956 transitions. [2022-11-20 12:35:54,258 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791011235955056 [2022-11-20 12:35:54,258 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1956 transitions. [2022-11-20 12:35:54,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1956 transitions. [2022-11-20 12:35:54,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:54,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1956 transitions. [2022-11-20 12:35:54,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 391.2) internal successors, (1956), 5 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:54,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:54,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 445.0) internal successors, (2670), 6 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:54,267 INFO L175 Difference]: Start difference. First operand has 416 places, 440 transitions, 1223 flow. Second operand 5 states and 1956 transitions. [2022-11-20 12:35:54,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 444 transitions, 1391 flow [2022-11-20 12:35:54,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 444 transitions, 1247 flow, removed 7 selfloop flow, removed 15 redundant places. [2022-11-20 12:35:54,277 INFO L231 Difference]: Finished difference. Result has 406 places, 438 transitions, 1117 flow [2022-11-20 12:35:54,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1065, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1117, PETRI_PLACES=406, PETRI_TRANSITIONS=438} [2022-11-20 12:35:54,279 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 8 predicate places. [2022-11-20 12:35:54,279 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 438 transitions, 1117 flow [2022-11-20 12:35:54,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 385.0) internal successors, (1925), 5 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:54,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:54,280 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:54,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:35:54,280 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:35:54,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:54,281 INFO L85 PathProgramCache]: Analyzing trace with hash 166845172, now seen corresponding path program 1 times [2022-11-20 12:35:54,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:54,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495046805] [2022-11-20 12:35:54,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:54,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:54,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:35:54,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:54,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495046805] [2022-11-20 12:35:54,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495046805] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:54,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436791154] [2022-11-20 12:35:54,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:54,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:54,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:54,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:54,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:35:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:54,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:35:54,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:35:54,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:35:54,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436791154] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:54,857 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:54,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-20 12:35:54,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213675669] [2022-11-20 12:35:54,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:54,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 12:35:54,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:54,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 12:35:54,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:35:54,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 445 [2022-11-20 12:35:54,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 438 transitions, 1117 flow. Second operand has 15 states, 15 states have (on average 369.6666666666667) internal successors, (5545), 15 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:54,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:54,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 445 [2022-11-20 12:35:54,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:55,439 INFO L130 PetriNetUnfolder]: 34/1063 cut-off events. [2022-11-20 12:35:55,439 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2022-11-20 12:35:55,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1376 conditions, 1063 events. 34/1063 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4789 event pairs, 0 based on Foata normal form. 6/943 useless extension candidates. Maximal degree in co-relation 915. Up to 60 conditions per place. [2022-11-20 12:35:55,458 INFO L137 encePairwiseOnDemand]: 421/445 looper letters, 77 selfloop transitions, 46 changer transitions 0/461 dead transitions. [2022-11-20 12:35:55,459 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 461 transitions, 1419 flow [2022-11-20 12:35:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:35:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:35:55,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4116 transitions. [2022-11-20 12:35:55,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8408580183861083 [2022-11-20 12:35:55,467 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4116 transitions. [2022-11-20 12:35:55,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4116 transitions. [2022-11-20 12:35:55,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:55,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4116 transitions. [2022-11-20 12:35:55,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 374.1818181818182) internal successors, (4116), 11 states have internal predecessors, (4116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:55,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 445.0) internal successors, (5340), 12 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:55,486 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 445.0) internal successors, (5340), 12 states have internal predecessors, (5340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:55,487 INFO L175 Difference]: Start difference. First operand has 406 places, 438 transitions, 1117 flow. Second operand 11 states and 4116 transitions. [2022-11-20 12:35:55,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 461 transitions, 1419 flow [2022-11-20 12:35:55,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 461 transitions, 1387 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 12:35:55,497 INFO L231 Difference]: Finished difference. Result has 415 places, 437 transitions, 1230 flow [2022-11-20 12:35:55,498 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1230, PETRI_PLACES=415, PETRI_TRANSITIONS=437} [2022-11-20 12:35:55,499 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 17 predicate places. [2022-11-20 12:35:55,499 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 437 transitions, 1230 flow [2022-11-20 12:35:55,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 369.6666666666667) internal successors, (5545), 15 states have internal predecessors, (5545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:55,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:55,501 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:55,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:55,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:35:55,708 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:35:55,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:55,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1179100428, now seen corresponding path program 2 times [2022-11-20 12:35:55,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:55,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056267492] [2022-11-20 12:35:55,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:55,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:35:56,116 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 12:35:56,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:35:56,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056267492] [2022-11-20 12:35:56,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056267492] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:35:56,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277230020] [2022-11-20 12:35:56,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:35:56,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:56,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:35:56,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:35:56,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:35:56,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:35:56,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:35:56,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:35:56,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:35:56,564 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 12:35:56,564 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:35:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 12:35:56,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277230020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:35:56,759 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:35:56,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-20 12:35:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944672382] [2022-11-20 12:35:56,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:35:56,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:35:56,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:35:56,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:35:56,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:35:56,767 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 365 out of 445 [2022-11-20 12:35:56,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 437 transitions, 1230 flow. Second operand has 22 states, 22 states have (on average 371.72727272727275) internal successors, (8178), 22 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:56,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:35:56,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 365 of 445 [2022-11-20 12:35:56,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:35:57,432 INFO L130 PetriNetUnfolder]: 12/499 cut-off events. [2022-11-20 12:35:57,433 INFO L131 PetriNetUnfolder]: For 154/154 co-relation queries the response was YES. [2022-11-20 12:35:57,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 499 events. 12/499 cut-off events. For 154/154 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 802 event pairs, 0 based on Foata normal form. 6/463 useless extension candidates. Maximal degree in co-relation 281. Up to 28 conditions per place. [2022-11-20 12:35:57,439 INFO L137 encePairwiseOnDemand]: 421/445 looper letters, 86 selfloop transitions, 51 changer transitions 0/475 dead transitions. [2022-11-20 12:35:57,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 475 transitions, 1620 flow [2022-11-20 12:35:57,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:35:57,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 12:35:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6348 transitions. [2022-11-20 12:35:57,451 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8391275611368143 [2022-11-20 12:35:57,451 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6348 transitions. [2022-11-20 12:35:57,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6348 transitions. [2022-11-20 12:35:57,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:35:57,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6348 transitions. [2022-11-20 12:35:57,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 373.4117647058824) internal successors, (6348), 17 states have internal predecessors, (6348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:57,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 445.0) internal successors, (8010), 18 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:57,483 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 445.0) internal successors, (8010), 18 states have internal predecessors, (8010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:57,483 INFO L175 Difference]: Start difference. First operand has 415 places, 437 transitions, 1230 flow. Second operand 17 states and 6348 transitions. [2022-11-20 12:35:57,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 475 transitions, 1620 flow [2022-11-20 12:35:57,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 475 transitions, 1538 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-11-20 12:35:57,496 INFO L231 Difference]: Finished difference. Result has 424 places, 433 transitions, 1264 flow [2022-11-20 12:35:57,497 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1135, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1264, PETRI_PLACES=424, PETRI_TRANSITIONS=433} [2022-11-20 12:35:57,497 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 26 predicate places. [2022-11-20 12:35:57,498 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 433 transitions, 1264 flow [2022-11-20 12:35:57,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 371.72727272727275) internal successors, (8178), 22 states have internal predecessors, (8178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:35:57,500 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:35:57,501 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:35:57,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:35:57,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:35:57,707 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:35:57,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:35:57,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1260391156, now seen corresponding path program 3 times [2022-11-20 12:35:57,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:35:57,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199047529] [2022-11-20 12:35:57,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:35:57,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:35:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:36:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 27 proven. 187 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-20 12:36:03,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:36:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199047529] [2022-11-20 12:36:03,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199047529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:36:03,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860581300] [2022-11-20 12:36:03,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:36:03,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:36:03,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:36:03,595 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:36:03,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:36:03,953 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-20 12:36:03,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:36:03,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-20 12:36:03,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:36:04,778 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:36:05,098 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:36:05,344 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 12:36:05,344 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2022-11-20 12:36:05,794 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 12:36:05,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-20 12:36:06,195 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 12:36:06,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-20 12:36:06,554 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 12:36:06,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-11-20 12:36:07,299 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:36:07,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:36:07,469 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:36:07,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:36:07,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:36:07,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:36:07,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:36:08,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:36:08,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:36:08,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:36:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 37 proven. 124 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-20 12:36:08,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:36:08,572 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_317 (Array Int Int)) (v_ArrVal_316 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base| v_ArrVal_316) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_317) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-20 12:36:57,760 INFO L321 Elim1Store]: treesize reduction 280, result has 34.1 percent of original size [2022-11-20 12:36:57,760 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 158 [2022-11-20 12:36:57,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:36:57,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 246 treesize of output 318 [2022-11-20 12:36:57,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2022-11-20 12:36:57,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2022-11-20 12:37:01,187 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:37:01,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 33 [2022-11-20 12:37:01,866 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 124 trivial. 29 not checked. [2022-11-20 12:37:01,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860581300] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:37:01,866 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:37:01,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 100 [2022-11-20 12:37:01,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933038278] [2022-11-20 12:37:01,867 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:37:01,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-11-20 12:37:01,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:01,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-11-20 12:37:01,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=652, Invalid=9191, Unknown=61, NotChecked=196, Total=10100 [2022-11-20 12:37:01,899 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 445 [2022-11-20 12:37:01,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 433 transitions, 1264 flow. Second operand has 101 states, 101 states have (on average 293.1485148514852) internal successors, (29608), 101 states have internal predecessors, (29608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:01,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:01,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 445 [2022-11-20 12:37:01,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:21,754 INFO L130 PetriNetUnfolder]: 5894/31397 cut-off events. [2022-11-20 12:37:21,754 INFO L131 PetriNetUnfolder]: For 197/563 co-relation queries the response was YES. [2022-11-20 12:37:22,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39875 conditions, 31397 events. 5894/31397 cut-off events. For 197/563 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 434299 event pairs, 1390 based on Foata normal form. 4/25233 useless extension candidates. Maximal degree in co-relation 39234. Up to 1864 conditions per place. [2022-11-20 12:37:22,251 INFO L137 encePairwiseOnDemand]: 394/445 looper letters, 331 selfloop transitions, 97 changer transitions 0/694 dead transitions. [2022-11-20 12:37:22,251 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 694 transitions, 2698 flow [2022-11-20 12:37:22,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-20 12:37:22,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-11-20 12:37:22,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 20930 transitions. [2022-11-20 12:37:22,284 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6624465896502612 [2022-11-20 12:37:22,284 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 20930 transitions. [2022-11-20 12:37:22,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 20930 transitions. [2022-11-20 12:37:22,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:22,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 20930 transitions. [2022-11-20 12:37:22,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 294.7887323943662) internal successors, (20930), 71 states have internal predecessors, (20930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:22,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 445.0) internal successors, (32040), 72 states have internal predecessors, (32040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:22,376 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 445.0) internal successors, (32040), 72 states have internal predecessors, (32040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:22,377 INFO L175 Difference]: Start difference. First operand has 424 places, 433 transitions, 1264 flow. Second operand 71 states and 20930 transitions. [2022-11-20 12:37:22,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 694 transitions, 2698 flow [2022-11-20 12:37:22,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 694 transitions, 2596 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-20 12:37:22,394 INFO L231 Difference]: Finished difference. Result has 502 places, 473 transitions, 1600 flow [2022-11-20 12:37:22,395 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1162, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=1600, PETRI_PLACES=502, PETRI_TRANSITIONS=473} [2022-11-20 12:37:22,398 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 104 predicate places. [2022-11-20 12:37:22,398 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 473 transitions, 1600 flow [2022-11-20 12:37:22,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 293.1485148514852) internal successors, (29608), 101 states have internal predecessors, (29608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:22,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:22,407 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:22,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:37:22,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:37:22,614 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:37:22,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:22,614 INFO L85 PathProgramCache]: Analyzing trace with hash 417421269, now seen corresponding path program 1 times [2022-11-20 12:37:22,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:22,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241173335] [2022-11-20 12:37:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:22,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:22,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-20 12:37:22,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:22,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241173335] [2022-11-20 12:37:22,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241173335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:37:22,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:37:22,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:37:22,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183621881] [2022-11-20 12:37:22,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:37:22,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:37:22,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:37:22,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:37:22,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:37:22,927 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 445 [2022-11-20 12:37:22,938 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 473 transitions, 1600 flow. Second operand has 4 states, 4 states have (on average 394.75) internal successors, (1579), 4 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:22,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:37:22,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 445 [2022-11-20 12:37:22,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:37:23,828 INFO L130 PetriNetUnfolder]: 208/2472 cut-off events. [2022-11-20 12:37:23,828 INFO L131 PetriNetUnfolder]: For 486/488 co-relation queries the response was YES. [2022-11-20 12:37:23,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3697 conditions, 2472 events. 208/2472 cut-off events. For 486/488 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 18775 event pairs, 60 based on Foata normal form. 16/2136 useless extension candidates. Maximal degree in co-relation 3509. Up to 211 conditions per place. [2022-11-20 12:37:23,873 INFO L137 encePairwiseOnDemand]: 438/445 looper letters, 47 selfloop transitions, 8 changer transitions 0/485 dead transitions. [2022-11-20 12:37:23,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 485 transitions, 1730 flow [2022-11-20 12:37:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:37:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:37:23,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1617 transitions. [2022-11-20 12:37:23,876 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9084269662921348 [2022-11-20 12:37:23,876 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1617 transitions. [2022-11-20 12:37:23,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1617 transitions. [2022-11-20 12:37:23,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:37:23,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1617 transitions. [2022-11-20 12:37:23,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 404.25) internal successors, (1617), 4 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:23,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:23,882 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 445.0) internal successors, (2225), 5 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:23,883 INFO L175 Difference]: Start difference. First operand has 502 places, 473 transitions, 1600 flow. Second operand 4 states and 1617 transitions. [2022-11-20 12:37:23,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 485 transitions, 1730 flow [2022-11-20 12:37:23,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 485 transitions, 1664 flow, removed 2 selfloop flow, removed 20 redundant places. [2022-11-20 12:37:23,897 INFO L231 Difference]: Finished difference. Result has 487 places, 472 transitions, 1564 flow [2022-11-20 12:37:23,898 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1564, PETRI_PLACES=487, PETRI_TRANSITIONS=472} [2022-11-20 12:37:23,899 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 89 predicate places. [2022-11-20 12:37:23,899 INFO L495 AbstractCegarLoop]: Abstraction has has 487 places, 472 transitions, 1564 flow [2022-11-20 12:37:23,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 394.75) internal successors, (1579), 4 states have internal predecessors, (1579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:37:23,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:37:23,900 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:37:23,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:37:23,901 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:37:23,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:37:23,902 INFO L85 PathProgramCache]: Analyzing trace with hash 296238374, now seen corresponding path program 1 times [2022-11-20 12:37:23,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:37:23,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618059783] [2022-11-20 12:37:23,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:23,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:37:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 11 proven. 108 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2022-11-20 12:37:28,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:37:28,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618059783] [2022-11-20 12:37:28,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618059783] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:37:28,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016613531] [2022-11-20 12:37:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:37:28,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:37:28,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:37:28,871 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:37:28,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:37:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:37:29,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 63 conjunts are in the unsatisfiable core [2022-11-20 12:37:29,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:37:29,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:37:29,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 12:37:30,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:37:30,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:37:30,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:37:30,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:37:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:37:31,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:37:31,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:37:31,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:37:32,133 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:37:32,134 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-20 12:37:32,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:37:32,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:37:32,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:37:32,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:37:32,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:37:33,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:37:33,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:37:33,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:37:33,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:37:33,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:37:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 48 proven. 76 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2022-11-20 12:37:33,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:37:34,029 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_470 (Array Int Int)) (v_ArrVal_471 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_470) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_471) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-20 12:37:38,572 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_469 (Array Int Int)) (v_ArrVal_470 (Array Int Int)) (v_ArrVal_471 (Array Int Int))) (< (select (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_create_fresh_int_array_#t~malloc28#1.base| v_ArrVal_469) |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_470) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_471) c_~o_2~0.base) c_~o_2~0.offset) 9223372039002259456)) is different from false [2022-11-20 12:39:29,761 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-20 12:39:29,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 77 [2022-11-20 12:39:29,786 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:39:29,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 490 treesize of output 476 [2022-11-20 12:39:29,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 231 treesize of output 215 [2022-11-20 12:39:29,820 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 446 treesize of output 414 [2022-11-20 12:39:29,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 414 treesize of output 406 [2022-11-20 12:39:51,107 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:39:51,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 34 [2022-11-20 12:39:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 40 proven. 53 refuted. 2 times theorem prover too weak. 161 trivial. 29 not checked. [2022-11-20 12:39:51,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016613531] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:39:51,723 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:39:51,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 29, 32] total 86 [2022-11-20 12:39:51,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22829029] [2022-11-20 12:39:51,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:39:51,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-11-20 12:39:51,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:39:51,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-11-20 12:39:51,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=523, Invalid=6533, Unknown=92, NotChecked=334, Total=7482 [2022-11-20 12:39:51,745 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 445 [2022-11-20 12:39:51,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 472 transitions, 1564 flow. Second operand has 87 states, 87 states have (on average 263.5632183908046) internal successors, (22930), 87 states have internal predecessors, (22930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:39:51,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:39:51,762 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 445 [2022-11-20 12:39:51,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:40:13,386 INFO L130 PetriNetUnfolder]: 8718/42254 cut-off events. [2022-11-20 12:40:13,386 INFO L131 PetriNetUnfolder]: For 6593/6596 co-relation queries the response was YES. [2022-11-20 12:40:13,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59403 conditions, 42254 events. 8718/42254 cut-off events. For 6593/6596 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 608402 event pairs, 823 based on Foata normal form. 25/35207 useless extension candidates. Maximal degree in co-relation 59157. Up to 3310 conditions per place. [2022-11-20 12:40:14,195 INFO L137 encePairwiseOnDemand]: 395/445 looper letters, 363 selfloop transitions, 115 changer transitions 0/727 dead transitions. [2022-11-20 12:40:14,195 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 727 transitions, 3390 flow [2022-11-20 12:40:14,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-20 12:40:14,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2022-11-20 12:40:14,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 16988 transitions. [2022-11-20 12:40:14,404 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5964887640449438 [2022-11-20 12:40:14,404 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 16988 transitions. [2022-11-20 12:40:14,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 16988 transitions. [2022-11-20 12:40:14,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:40:14,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 16988 transitions. [2022-11-20 12:40:14,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 265.4375) internal successors, (16988), 64 states have internal predecessors, (16988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:14,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 445.0) internal successors, (28925), 65 states have internal predecessors, (28925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:14,470 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 445.0) internal successors, (28925), 65 states have internal predecessors, (28925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:14,471 INFO L175 Difference]: Start difference. First operand has 487 places, 472 transitions, 1564 flow. Second operand 64 states and 16988 transitions. [2022-11-20 12:40:14,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 727 transitions, 3390 flow [2022-11-20 12:40:14,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 550 places, 727 transitions, 3390 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:40:14,536 INFO L231 Difference]: Finished difference. Result has 566 places, 513 transitions, 2176 flow [2022-11-20 12:40:14,538 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=445, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=487, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=2176, PETRI_PLACES=566, PETRI_TRANSITIONS=513} [2022-11-20 12:40:14,538 INFO L288 CegarLoopForPetriNet]: 398 programPoint places, 168 predicate places. [2022-11-20 12:40:14,539 INFO L495 AbstractCegarLoop]: Abstraction has has 566 places, 513 transitions, 2176 flow [2022-11-20 12:40:14,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 263.5632183908046) internal successors, (22930), 87 states have internal predecessors, (22930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:40:14,542 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:40:14,542 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:40:14,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:40:14,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:40:14,749 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 54 more)] === [2022-11-20 12:40:14,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:40:14,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1428834551, now seen corresponding path program 1 times [2022-11-20 12:40:14,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:40:14,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032945813] [2022-11-20 12:40:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:14,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:40:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 27 proven. 68 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:40:17,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:40:17,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032945813] [2022-11-20 12:40:17,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032945813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:40:17,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321196261] [2022-11-20 12:40:17,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:40:17,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:40:17,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:40:17,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:40:17,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d0b36288-04a1-434c-84b7-1c515a67da22/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:40:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:40:17,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 12:40:17,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:40:19,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-20 12:40:19,358 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:40:19,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:40:19,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:40:19,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:40:19,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:40:19,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:40:20,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:40:20,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-20 12:40:20,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:40:20,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:40:20,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:40:20,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-20 12:40:20,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-20 12:40:20,916 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 48 proven. 47 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:40:20,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:40:21,144 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_575 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_575) c_~o_4~0.base) c_~o_4~0.offset) 9223372039002259456)) is different from false [2022-11-20 12:41:26,656 INFO L321 Elim1Store]: treesize reduction 364, result has 14.4 percent of original size [2022-11-20 12:41:26,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 53 treesize of output 74 [2022-11-20 12:41:26,668 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:41:26,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 120 [2022-11-20 12:41:26,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 98 [2022-11-20 12:41:26,681 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:41:47,929 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 42 proven. 53 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-20 12:41:47,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321196261] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:41:47,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:41:47,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 29] total 72 [2022-11-20 12:41:47,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797457765] [2022-11-20 12:41:47,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:41:47,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-20 12:41:47,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:41:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-20 12:41:47,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=471, Invalid=4534, Unknown=111, NotChecked=140, Total=5256 [2022-11-20 12:41:47,949 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 445 [2022-11-20 12:41:47,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 513 transitions, 2176 flow. Second operand has 73 states, 73 states have (on average 307.82191780821915) internal successors, (22471), 73 states have internal predecessors, (22471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:41:47,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:41:47,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 445 [2022-11-20 12:41:47,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand