./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8 --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 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --- 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-e04fb08 [2022-11-16 12:04:34,184 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:04:34,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:04:34,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:04:34,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:04:34,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:04:34,223 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:04:34,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:04:34,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:04:34,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:04:34,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:04:34,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:04:34,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:04:34,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:04:34,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:04:34,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:04:34,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:04:34,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:04:34,249 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:04:34,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:04:34,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:04:34,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:04:34,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:04:34,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:04:34,260 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:04:34,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:04:34,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:04:34,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:04:34,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:04:34,264 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:04:34,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:04:34,265 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:04:34,266 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:04:34,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:04:34,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:04:34,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:04:34,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:04:34,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:04:34,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:04:34,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:04:34,272 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:04:34,273 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:04:34,304 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:04:34,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:04:34,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:04:34,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:04:34,311 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:04:34,312 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:04:34,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:04:34,313 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:04:34,313 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:04:34,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:04:34,314 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:04:34,315 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:04:34,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:04:34,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:04:34,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:04:34,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:04:34,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:04:34,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:04:34,316 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:04:34,316 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:04:34,317 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:04:34,317 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:04:34,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:04:34,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:04:34,318 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:04:34,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:04:34,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:04:34,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:04:34,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:04:34,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:04:34,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:04:34,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:04:34,321 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:04:34,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:04:34,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:04:34,322 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_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 [2022-11-16 12:04:34,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:04:34,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:04:34,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:04:34,657 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:04:34,659 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:04:34,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2022-11-16 12:04:34,727 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/data/807b57464/d3be67b05f4249efb102d2f0a029c3a0/FLAGeeae577e5 [2022-11-16 12:04:35,237 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:04:35,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2022-11-16 12:04:35,255 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/data/807b57464/d3be67b05f4249efb102d2f0a029c3a0/FLAGeeae577e5 [2022-11-16 12:04:35,580 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/data/807b57464/d3be67b05f4249efb102d2f0a029c3a0 [2022-11-16 12:04:35,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:04:35,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:04:35,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:04:35,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:04:35,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:04:35,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:35,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4048151a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35, skipping insertion in model container [2022-11-16 12:04:35,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:35,611 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:04:35,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:04:35,937 WARN L229 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_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2022-11-16 12:04:35,944 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:04:35,952 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:04:35,979 WARN L229 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_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/sv-benchmarks/c/weaver/array-eq-trans.wvr.c[2737,2750] [2022-11-16 12:04:35,983 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:04:35,997 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:04:35,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35 WrapperNode [2022-11-16 12:04:35,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:04:35,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:04:35,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:04:35,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:04:36,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,077 INFO L138 Inliner]: procedures = 24, calls = 46, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 210 [2022-11-16 12:04:36,078 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:04:36,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:04:36,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:04:36,080 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:04:36,090 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,091 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,095 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,104 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:04:36,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:04:36,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:04:36,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:04:36,146 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (1/1) ... [2022-11-16 12:04:36,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:04:36,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:36,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:04:36,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:04:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:04:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:04:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:04:36,230 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:04:36,230 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:04:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 12:04:36,232 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 12:04:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:04:36,232 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:04:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:04:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:04:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:04:36,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:04:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:04:36,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:04:36,235 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 12:04:36,393 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:04:36,395 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:04:36,976 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:04:37,005 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:04:37,010 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 12:04:37,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:04:37 BoogieIcfgContainer [2022-11-16 12:04:37,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:04:37,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:04:37,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:04:37,024 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:04:37,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:04:35" (1/3) ... [2022-11-16 12:04:37,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2dbedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:04:37, skipping insertion in model container [2022-11-16 12:04:37,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:04:35" (2/3) ... [2022-11-16 12:04:37,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2dbedf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:04:37, skipping insertion in model container [2022-11-16 12:04:37,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:04:37" (3/3) ... [2022-11-16 12:04:37,027 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2022-11-16 12:04:37,037 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:04:37,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:04:37,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-16 12:04:37,050 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:04:37,212 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 12:04:37,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 309 places, 329 transitions, 682 flow [2022-11-16 12:04:37,475 INFO L130 PetriNetUnfolder]: 30/326 cut-off events. [2022-11-16 12:04:37,476 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 12:04:37,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 326 events. 30/326 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 324 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 221. Up to 3 conditions per place. [2022-11-16 12:04:37,484 INFO L82 GeneralOperation]: Start removeDead. Operand has 309 places, 329 transitions, 682 flow [2022-11-16 12:04:37,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 247 transitions, 509 flow [2022-11-16 12:04:37,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:04:37,534 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;@29f11cfa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:04:37,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-11-16 12:04:37,557 INFO L130 PetriNetUnfolder]: 3/69 cut-off events. [2022-11-16 12:04:37,557 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:04:37,558 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:37,558 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] [2022-11-16 12:04:37,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:04:37,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:37,567 INFO L85 PathProgramCache]: Analyzing trace with hash -895934613, now seen corresponding path program 1 times [2022-11-16 12:04:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:37,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996576125] [2022-11-16 12:04:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:37,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:38,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:38,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:38,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996576125] [2022-11-16 12:04:38,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996576125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:38,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:38,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:04:38,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098871157] [2022-11-16 12:04:38,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:38,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:38,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:38,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:38,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:38,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-16 12:04:38,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 247 transitions, 509 flow. Second operand has 4 states, 4 states have (on average 272.5) internal successors, (1090), 4 states have internal predecessors, (1090), 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) [2022-11-16 12:04:38,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:38,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-16 12:04:38,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:38,535 INFO L130 PetriNetUnfolder]: 17/370 cut-off events. [2022-11-16 12:04:38,535 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2022-11-16 12:04:38,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 370 events. 17/370 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 850 event pairs, 0 based on Foata normal form. 24/352 useless extension candidates. Maximal degree in co-relation 386. Up to 44 conditions per place. [2022-11-16 12:04:38,545 INFO L137 encePairwiseOnDemand]: 297/329 looper letters, 58 selfloop transitions, 14 changer transitions 6/266 dead transitions. [2022-11-16 12:04:38,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 266 transitions, 706 flow [2022-11-16 12:04:38,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:04:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1451 transitions. [2022-11-16 12:04:38,575 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8820668693009118 [2022-11-16 12:04:38,577 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1451 transitions. [2022-11-16 12:04:38,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1451 transitions. [2022-11-16 12:04:38,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:38,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1451 transitions. [2022-11-16 12:04:38,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 290.2) internal successors, (1451), 5 states have internal predecessors, (1451), 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) [2022-11-16 12:04:38,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 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) [2022-11-16 12:04:38,604 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 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) [2022-11-16 12:04:38,606 INFO L175 Difference]: Start difference. First operand has 236 places, 247 transitions, 509 flow. Second operand 5 states and 1451 transitions. [2022-11-16 12:04:38,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 266 transitions, 706 flow [2022-11-16 12:04:38,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 266 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:04:38,618 INFO L231 Difference]: Finished difference. Result has 238 places, 240 transitions, 568 flow [2022-11-16 12:04:38,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=238, PETRI_TRANSITIONS=240} [2022-11-16 12:04:38,624 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 2 predicate places. [2022-11-16 12:04:38,625 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 240 transitions, 568 flow [2022-11-16 12:04:38,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 272.5) internal successors, (1090), 4 states have internal predecessors, (1090), 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) [2022-11-16 12:04:38,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:38,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:38,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:04:38,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:04:38,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:38,627 INFO L85 PathProgramCache]: Analyzing trace with hash -208542109, now seen corresponding path program 1 times [2022-11-16 12:04:38,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:38,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089547588] [2022-11-16 12:04:38,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:38,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:38,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:38,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:38,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089547588] [2022-11-16 12:04:38,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089547588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:38,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764826238] [2022-11-16 12:04:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:38,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:38,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:38,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:38,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:04:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:39,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:04:39,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:39,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:39,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:39,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764826238] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:39,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:04:39,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:04:39,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572689613] [2022-11-16 12:04:39,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:39,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:04:39,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:39,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:04:39,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:04:39,199 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-16 12:04:39,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 240 transitions, 568 flow. Second operand has 12 states, 12 states have (on average 273.6666666666667) internal successors, (3284), 12 states have internal predecessors, (3284), 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) [2022-11-16 12:04:39,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:39,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-16 12:04:39,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:39,825 INFO L130 PetriNetUnfolder]: 41/775 cut-off events. [2022-11-16 12:04:39,825 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-16 12:04:39,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 775 events. 41/775 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 3054 event pairs, 0 based on Foata normal form. 9/709 useless extension candidates. Maximal degree in co-relation 480. Up to 35 conditions per place. [2022-11-16 12:04:39,832 INFO L137 encePairwiseOnDemand]: 306/329 looper letters, 109 selfloop transitions, 62 changer transitions 0/359 dead transitions. [2022-11-16 12:04:39,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 359 transitions, 1250 flow [2022-11-16 12:04:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:04:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:04:39,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5058 transitions. [2022-11-16 12:04:39,843 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8541033434650456 [2022-11-16 12:04:39,844 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 5058 transitions. [2022-11-16 12:04:39,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 5058 transitions. [2022-11-16 12:04:39,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:39,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 5058 transitions. [2022-11-16 12:04:39,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 281.0) internal successors, (5058), 18 states have internal predecessors, (5058), 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) [2022-11-16 12:04:39,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 329.0) internal successors, (6251), 19 states have internal predecessors, (6251), 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) [2022-11-16 12:04:39,881 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 329.0) internal successors, (6251), 19 states have internal predecessors, (6251), 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) [2022-11-16 12:04:39,881 INFO L175 Difference]: Start difference. First operand has 238 places, 240 transitions, 568 flow. Second operand 18 states and 5058 transitions. [2022-11-16 12:04:39,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 359 transitions, 1250 flow [2022-11-16 12:04:39,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 359 transitions, 1242 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:04:39,900 INFO L231 Difference]: Finished difference. Result has 252 places, 282 transitions, 930 flow [2022-11-16 12:04:39,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=930, PETRI_PLACES=252, PETRI_TRANSITIONS=282} [2022-11-16 12:04:39,902 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 16 predicate places. [2022-11-16 12:04:39,903 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 282 transitions, 930 flow [2022-11-16 12:04:39,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 273.6666666666667) internal successors, (3284), 12 states have internal predecessors, (3284), 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) [2022-11-16 12:04:39,906 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:39,907 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:39,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:40,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:40,114 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:04:40,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:40,114 INFO L85 PathProgramCache]: Analyzing trace with hash 2125129790, now seen corresponding path program 1 times [2022-11-16 12:04:40,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:40,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279693594] [2022-11-16 12:04:40,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:40,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:40,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:40,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:40,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279693594] [2022-11-16 12:04:40,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279693594] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:40,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406715234] [2022-11-16 12:04:40,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:40,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:40,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:40,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:40,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:04:40,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:40,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:04:40,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:40,416 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:04:40,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406715234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:40,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:04:40,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:04:40,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921336051] [2022-11-16 12:04:40,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:40,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:04:40,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:40,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:04:40,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:04:40,422 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-16 12:04:40,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 282 transitions, 930 flow. Second operand has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 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) [2022-11-16 12:04:40,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:40,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-16 12:04:40,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:40,756 INFO L130 PetriNetUnfolder]: 41/763 cut-off events. [2022-11-16 12:04:40,756 INFO L131 PetriNetUnfolder]: For 205/205 co-relation queries the response was YES. [2022-11-16 12:04:40,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 763 events. 41/763 cut-off events. For 205/205 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 2976 event pairs, 0 based on Foata normal form. 12/700 useless extension candidates. Maximal degree in co-relation 842. Up to 68 conditions per place. [2022-11-16 12:04:40,762 INFO L137 encePairwiseOnDemand]: 312/329 looper letters, 59 selfloop transitions, 43 changer transitions 0/290 dead transitions. [2022-11-16 12:04:40,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 290 transitions, 1105 flow [2022-11-16 12:04:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:04:40,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:04:40,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1969 transitions. [2022-11-16 12:04:40,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8549717759444203 [2022-11-16 12:04:40,769 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1969 transitions. [2022-11-16 12:04:40,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1969 transitions. [2022-11-16 12:04:40,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:40,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1969 transitions. [2022-11-16 12:04:40,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.2857142857143) internal successors, (1969), 7 states have internal predecessors, (1969), 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) [2022-11-16 12:04:40,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 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) [2022-11-16 12:04:40,783 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 329.0) internal successors, (2632), 8 states have internal predecessors, (2632), 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) [2022-11-16 12:04:40,783 INFO L175 Difference]: Start difference. First operand has 252 places, 282 transitions, 930 flow. Second operand 7 states and 1969 transitions. [2022-11-16 12:04:40,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 290 transitions, 1105 flow [2022-11-16 12:04:40,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 290 transitions, 989 flow, removed 41 selfloop flow, removed 5 redundant places. [2022-11-16 12:04:40,800 INFO L231 Difference]: Finished difference. Result has 246 places, 270 transitions, 819 flow [2022-11-16 12:04:40,800 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=733, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=819, PETRI_PLACES=246, PETRI_TRANSITIONS=270} [2022-11-16 12:04:40,803 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 10 predicate places. [2022-11-16 12:04:40,803 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 270 transitions, 819 flow [2022-11-16 12:04:40,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 273.3333333333333) internal successors, (1640), 6 states have internal predecessors, (1640), 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) [2022-11-16 12:04:40,805 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:40,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:40,817 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:41,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:41,012 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:04:41,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:41,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1474687637, now seen corresponding path program 2 times [2022-11-16 12:04:41,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:41,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230197191] [2022-11-16 12:04:41,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:41,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:41,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:41,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230197191] [2022-11-16 12:04:41,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230197191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:41,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624780467] [2022-11-16 12:04:41,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:04:41,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:41,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:41,475 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:41,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:04:41,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:04:41,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:04:41,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 12:04:41,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:04:41,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:42,017 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 12:04:42,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624780467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:42,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:04:42,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 12:04:42,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626419713] [2022-11-16 12:04:42,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:42,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:04:42,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:04:42,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:04:42,028 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 329 [2022-11-16 12:04:42,033 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 270 transitions, 819 flow. Second operand has 18 states, 18 states have (on average 248.61111111111111) internal successors, (4475), 18 states have internal predecessors, (4475), 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) [2022-11-16 12:04:42,033 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:42,033 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 329 [2022-11-16 12:04:42,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:43,716 INFO L130 PetriNetUnfolder]: 225/1907 cut-off events. [2022-11-16 12:04:43,716 INFO L131 PetriNetUnfolder]: For 273/315 co-relation queries the response was YES. [2022-11-16 12:04:43,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2612 conditions, 1907 events. 225/1907 cut-off events. For 273/315 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 11844 event pairs, 84 based on Foata normal form. 6/1570 useless extension candidates. Maximal degree in co-relation 1686. Up to 71 conditions per place. [2022-11-16 12:04:43,738 INFO L137 encePairwiseOnDemand]: 301/329 looper letters, 178 selfloop transitions, 97 changer transitions 0/439 dead transitions. [2022-11-16 12:04:43,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 439 transitions, 1844 flow [2022-11-16 12:04:43,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-16 12:04:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-16 12:04:43,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 12286 transitions. [2022-11-16 12:04:43,769 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7621115315427083 [2022-11-16 12:04:43,769 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 12286 transitions. [2022-11-16 12:04:43,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 12286 transitions. [2022-11-16 12:04:43,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:43,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 12286 transitions. [2022-11-16 12:04:43,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 250.73469387755102) internal successors, (12286), 49 states have internal predecessors, (12286), 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) [2022-11-16 12:04:43,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 329.0) internal successors, (16450), 50 states have internal predecessors, (16450), 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) [2022-11-16 12:04:43,971 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 329.0) internal successors, (16450), 50 states have internal predecessors, (16450), 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) [2022-11-16 12:04:43,971 INFO L175 Difference]: Start difference. First operand has 246 places, 270 transitions, 819 flow. Second operand 49 states and 12286 transitions. [2022-11-16 12:04:43,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 439 transitions, 1844 flow [2022-11-16 12:04:43,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 439 transitions, 1775 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:04:43,991 INFO L231 Difference]: Finished difference. Result has 292 places, 310 transitions, 1162 flow [2022-11-16 12:04:43,992 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1162, PETRI_PLACES=292, PETRI_TRANSITIONS=310} [2022-11-16 12:04:43,993 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 56 predicate places. [2022-11-16 12:04:43,994 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 310 transitions, 1162 flow [2022-11-16 12:04:43,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 248.61111111111111) internal successors, (4475), 18 states have internal predecessors, (4475), 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) [2022-11-16 12:04:43,995 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:43,996 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] [2022-11-16 12:04:44,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:44,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:44,203 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:04:44,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:44,203 INFO L85 PathProgramCache]: Analyzing trace with hash -111854088, now seen corresponding path program 1 times [2022-11-16 12:04:44,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:44,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744209349] [2022-11-16 12:04:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:44,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:44,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:44,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:44,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744209349] [2022-11-16 12:04:44,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744209349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:44,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:44,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:04:44,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390093539] [2022-11-16 12:04:44,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:44,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:44,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:44,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:44,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:44,419 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 329 [2022-11-16 12:04:44,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 310 transitions, 1162 flow. Second operand has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 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) [2022-11-16 12:04:44,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:44,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 329 [2022-11-16 12:04:44,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:44,913 INFO L130 PetriNetUnfolder]: 372/1956 cut-off events. [2022-11-16 12:04:44,913 INFO L131 PetriNetUnfolder]: For 291/319 co-relation queries the response was YES. [2022-11-16 12:04:44,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3406 conditions, 1956 events. 372/1956 cut-off events. For 291/319 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 13725 event pairs, 56 based on Foata normal form. 0/1718 useless extension candidates. Maximal degree in co-relation 3132. Up to 421 conditions per place. [2022-11-16 12:04:44,939 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 30 selfloop transitions, 4 changer transitions 0/327 dead transitions. [2022-11-16 12:04:44,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 327 transitions, 1275 flow [2022-11-16 12:04:44,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:04:44,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1491 transitions. [2022-11-16 12:04:44,943 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9063829787234042 [2022-11-16 12:04:44,943 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1491 transitions. [2022-11-16 12:04:44,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1491 transitions. [2022-11-16 12:04:44,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:44,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1491 transitions. [2022-11-16 12:04:44,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.2) internal successors, (1491), 5 states have internal predecessors, (1491), 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) [2022-11-16 12:04:44,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 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) [2022-11-16 12:04:44,953 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 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) [2022-11-16 12:04:44,953 INFO L175 Difference]: Start difference. First operand has 292 places, 310 transitions, 1162 flow. Second operand 5 states and 1491 transitions. [2022-11-16 12:04:44,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 327 transitions, 1275 flow [2022-11-16 12:04:44,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 327 transitions, 1152 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-11-16 12:04:44,964 INFO L231 Difference]: Finished difference. Result has 284 places, 313 transitions, 1069 flow [2022-11-16 12:04:44,964 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1069, PETRI_PLACES=284, PETRI_TRANSITIONS=313} [2022-11-16 12:04:44,967 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 48 predicate places. [2022-11-16 12:04:44,968 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 313 transitions, 1069 flow [2022-11-16 12:04:44,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 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) [2022-11-16 12:04:44,969 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:44,969 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] [2022-11-16 12:04:44,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:04:44,969 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:04:44,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:44,973 INFO L85 PathProgramCache]: Analyzing trace with hash -597735967, now seen corresponding path program 1 times [2022-11-16 12:04:44,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:44,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234823352] [2022-11-16 12:04:44,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:44,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:45,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:45,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:45,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234823352] [2022-11-16 12:04:45,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234823352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:45,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:45,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:04:45,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377320370] [2022-11-16 12:04:45,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:45,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:45,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:45,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:45,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:45,160 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 329 [2022-11-16 12:04:45,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 313 transitions, 1069 flow. Second operand has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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) [2022-11-16 12:04:45,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:45,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 329 [2022-11-16 12:04:45,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:45,829 INFO L130 PetriNetUnfolder]: 533/2502 cut-off events. [2022-11-16 12:04:45,829 INFO L131 PetriNetUnfolder]: For 473/473 co-relation queries the response was YES. [2022-11-16 12:04:45,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4130 conditions, 2502 events. 533/2502 cut-off events. For 473/473 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 20449 event pairs, 84 based on Foata normal form. 0/2082 useless extension candidates. Maximal degree in co-relation 3876. Up to 582 conditions per place. [2022-11-16 12:04:45,877 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 29 selfloop transitions, 4 changer transitions 0/329 dead transitions. [2022-11-16 12:04:45,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 329 transitions, 1177 flow [2022-11-16 12:04:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:45,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:04:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1490 transitions. [2022-11-16 12:04:45,881 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9057750759878419 [2022-11-16 12:04:45,881 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1490 transitions. [2022-11-16 12:04:45,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1490 transitions. [2022-11-16 12:04:45,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:45,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1490 transitions. [2022-11-16 12:04:45,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 298.0) internal successors, (1490), 5 states have internal predecessors, (1490), 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) [2022-11-16 12:04:45,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 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) [2022-11-16 12:04:45,890 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 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) [2022-11-16 12:04:45,890 INFO L175 Difference]: Start difference. First operand has 284 places, 313 transitions, 1069 flow. Second operand 5 states and 1490 transitions. [2022-11-16 12:04:45,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 329 transitions, 1177 flow [2022-11-16 12:04:45,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 329 transitions, 1175 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:04:45,900 INFO L231 Difference]: Finished difference. Result has 290 places, 316 transitions, 1097 flow [2022-11-16 12:04:45,901 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1067, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1097, PETRI_PLACES=290, PETRI_TRANSITIONS=316} [2022-11-16 12:04:45,904 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 54 predicate places. [2022-11-16 12:04:45,904 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 316 transitions, 1097 flow [2022-11-16 12:04:45,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 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) [2022-11-16 12:04:45,905 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:45,905 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:45,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:04:45,906 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:04:45,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:45,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1489725109, now seen corresponding path program 1 times [2022-11-16 12:04:45,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:45,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858644014] [2022-11-16 12:04:45,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:45,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:46,159 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:04:46,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:46,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858644014] [2022-11-16 12:04:46,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858644014] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:46,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:46,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:04:46,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703056098] [2022-11-16 12:04:46,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:46,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:04:46,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:46,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:04:46,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:04:46,164 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-16 12:04:46,166 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 316 transitions, 1097 flow. Second operand has 7 states, 7 states have (on average 259.85714285714283) internal successors, (1819), 7 states have internal predecessors, (1819), 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) [2022-11-16 12:04:46,166 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:46,166 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-16 12:04:46,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:47,632 INFO L130 PetriNetUnfolder]: 841/5273 cut-off events. [2022-11-16 12:04:47,633 INFO L131 PetriNetUnfolder]: For 982/1073 co-relation queries the response was YES. [2022-11-16 12:04:47,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7939 conditions, 5273 events. 841/5273 cut-off events. For 982/1073 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 48524 event pairs, 252 based on Foata normal form. 0/4412 useless extension candidates. Maximal degree in co-relation 6983. Up to 557 conditions per place. [2022-11-16 12:04:47,696 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 181 selfloop transitions, 23 changer transitions 0/401 dead transitions. [2022-11-16 12:04:47,696 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 401 transitions, 1862 flow [2022-11-16 12:04:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:04:47,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:04:47,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2652 transitions. [2022-11-16 12:04:47,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8060790273556231 [2022-11-16 12:04:47,702 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2652 transitions. [2022-11-16 12:04:47,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2652 transitions. [2022-11-16 12:04:47,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:47,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2652 transitions. [2022-11-16 12:04:47,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 265.2) internal successors, (2652), 10 states have internal predecessors, (2652), 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) [2022-11-16 12:04:47,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 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) [2022-11-16 12:04:47,720 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 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) [2022-11-16 12:04:47,720 INFO L175 Difference]: Start difference. First operand has 290 places, 316 transitions, 1097 flow. Second operand 10 states and 2652 transitions. [2022-11-16 12:04:47,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 401 transitions, 1862 flow [2022-11-16 12:04:47,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 401 transitions, 1860 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:04:47,732 INFO L231 Difference]: Finished difference. Result has 300 places, 317 transitions, 1153 flow [2022-11-16 12:04:47,733 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1153, PETRI_PLACES=300, PETRI_TRANSITIONS=317} [2022-11-16 12:04:47,733 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 64 predicate places. [2022-11-16 12:04:47,733 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 317 transitions, 1153 flow [2022-11-16 12:04:47,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 259.85714285714283) internal successors, (1819), 7 states have internal predecessors, (1819), 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) [2022-11-16 12:04:47,734 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:47,734 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] [2022-11-16 12:04:47,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:04:47,735 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:04:47,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:47,735 INFO L85 PathProgramCache]: Analyzing trace with hash 345801704, now seen corresponding path program 1 times [2022-11-16 12:04:47,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:47,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483977093] [2022-11-16 12:04:47,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:47,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:47,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:47,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483977093] [2022-11-16 12:04:47,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483977093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:47,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:47,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:04:47,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320183962] [2022-11-16 12:04:47,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:47,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:04:47,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:47,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:04:47,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:04:47,891 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 291 out of 329 [2022-11-16 12:04:47,893 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 317 transitions, 1153 flow. Second operand has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 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) [2022-11-16 12:04:47,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:47,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 291 of 329 [2022-11-16 12:04:47,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:49,538 INFO L130 PetriNetUnfolder]: 1513/5924 cut-off events. [2022-11-16 12:04:49,540 INFO L131 PetriNetUnfolder]: For 1617/1617 co-relation queries the response was YES. [2022-11-16 12:04:49,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9472 conditions, 5924 events. 1513/5924 cut-off events. For 1617/1617 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 60427 event pairs, 252 based on Foata normal form. 0/4727 useless extension candidates. Maximal degree in co-relation 8080. Up to 1618 conditions per place. [2022-11-16 12:04:49,630 INFO L137 encePairwiseOnDemand]: 323/329 looper letters, 28 selfloop transitions, 4 changer transitions 0/332 dead transitions. [2022-11-16 12:04:49,631 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 332 transitions, 1253 flow [2022-11-16 12:04:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:04:49,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:04:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1489 transitions. [2022-11-16 12:04:49,638 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9051671732522797 [2022-11-16 12:04:49,638 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1489 transitions. [2022-11-16 12:04:49,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1489 transitions. [2022-11-16 12:04:49,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:49,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1489 transitions. [2022-11-16 12:04:49,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.8) internal successors, (1489), 5 states have internal predecessors, (1489), 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) [2022-11-16 12:04:49,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 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) [2022-11-16 12:04:49,650 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 329.0) internal successors, (1974), 6 states have internal predecessors, (1974), 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) [2022-11-16 12:04:49,651 INFO L175 Difference]: Start difference. First operand has 300 places, 317 transitions, 1153 flow. Second operand 5 states and 1489 transitions. [2022-11-16 12:04:49,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 332 transitions, 1253 flow [2022-11-16 12:04:49,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 332 transitions, 1226 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:04:49,664 INFO L231 Difference]: Finished difference. Result has 302 places, 320 transitions, 1156 flow [2022-11-16 12:04:49,665 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1156, PETRI_PLACES=302, PETRI_TRANSITIONS=320} [2022-11-16 12:04:49,668 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 66 predicate places. [2022-11-16 12:04:49,668 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 320 transitions, 1156 flow [2022-11-16 12:04:49,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 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) [2022-11-16 12:04:49,669 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:49,671 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:49,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:04:49,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:04:49,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1373005362, now seen corresponding path program 1 times [2022-11-16 12:04:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:49,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117907651] [2022-11-16 12:04:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:49,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:50,136 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:50,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:50,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117907651] [2022-11-16 12:04:50,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117907651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:04:50,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114905472] [2022-11-16 12:04:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:50,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:04:50,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:04:50,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:04:50,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:04:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:50,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 12:04:50,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:04:50,505 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:50,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:04:50,864 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:04:50,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114905472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:04:50,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:04:50,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-16 12:04:50,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680393942] [2022-11-16 12:04:50,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:04:50,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-16 12:04:50,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:50,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-16 12:04:50,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-16 12:04:50,878 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 329 [2022-11-16 12:04:50,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 320 transitions, 1156 flow. Second operand has 32 states, 32 states have (on average 274.28125) internal successors, (8777), 32 states have internal predecessors, (8777), 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) [2022-11-16 12:04:50,885 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:50,885 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 329 [2022-11-16 12:04:50,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:04:53,599 INFO L130 PetriNetUnfolder]: 271/5146 cut-off events. [2022-11-16 12:04:53,599 INFO L131 PetriNetUnfolder]: For 1597/1597 co-relation queries the response was YES. [2022-11-16 12:04:53,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7812 conditions, 5146 events. 271/5146 cut-off events. For 1597/1597 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 44036 event pairs, 0 based on Foata normal form. 32/4848 useless extension candidates. Maximal degree in co-relation 7159. Up to 155 conditions per place. [2022-11-16 12:04:53,691 INFO L137 encePairwiseOnDemand]: 310/329 looper letters, 308 selfloop transitions, 160 changer transitions 0/671 dead transitions. [2022-11-16 12:04:53,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 671 transitions, 3482 flow [2022-11-16 12:04:53,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-16 12:04:53,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-16 12:04:53,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 12408 transitions. [2022-11-16 12:04:53,709 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-16 12:04:53,710 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 12408 transitions. [2022-11-16 12:04:53,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 12408 transitions. [2022-11-16 12:04:53,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:04:53,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 12408 transitions. [2022-11-16 12:04:53,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 282.0) internal successors, (12408), 44 states have internal predecessors, (12408), 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) [2022-11-16 12:04:53,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 329.0) internal successors, (14805), 45 states have internal predecessors, (14805), 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) [2022-11-16 12:04:53,765 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 329.0) internal successors, (14805), 45 states have internal predecessors, (14805), 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) [2022-11-16 12:04:53,765 INFO L175 Difference]: Start difference. First operand has 302 places, 320 transitions, 1156 flow. Second operand 44 states and 12408 transitions. [2022-11-16 12:04:53,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 671 transitions, 3482 flow [2022-11-16 12:04:53,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 671 transitions, 3480 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:04:53,789 INFO L231 Difference]: Finished difference. Result has 353 places, 413 transitions, 2172 flow [2022-11-16 12:04:53,790 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=1154, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2172, PETRI_PLACES=353, PETRI_TRANSITIONS=413} [2022-11-16 12:04:53,791 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 117 predicate places. [2022-11-16 12:04:53,791 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 413 transitions, 2172 flow [2022-11-16 12:04:53,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 274.28125) internal successors, (8777), 32 states have internal predecessors, (8777), 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) [2022-11-16 12:04:53,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:04:53,795 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:04:53,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:04:54,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-16 12:04:54,001 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:04:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:04:54,002 INFO L85 PathProgramCache]: Analyzing trace with hash -437552810, now seen corresponding path program 1 times [2022-11-16 12:04:54,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:04:54,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033170611] [2022-11-16 12:04:54,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:04:54,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:04:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:04:54,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:04:54,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:04:54,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033170611] [2022-11-16 12:04:54,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033170611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:04:54,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:04:54,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:04:54,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192073179] [2022-11-16 12:04:54,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:04:54,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:04:54,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:04:54,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:04:54,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:04:54,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-16 12:04:54,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 413 transitions, 2172 flow. Second operand has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 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) [2022-11-16 12:04:54,274 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:04:54,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-16 12:04:54,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:01,688 INFO L130 PetriNetUnfolder]: 5896/27860 cut-off events. [2022-11-16 12:05:01,688 INFO L131 PetriNetUnfolder]: For 7418/7673 co-relation queries the response was YES. [2022-11-16 12:05:01,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48823 conditions, 27860 events. 5896/27860 cut-off events. For 7418/7673 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 324472 event pairs, 2100 based on Foata normal form. 0/25190 useless extension candidates. Maximal degree in co-relation 47052. Up to 3931 conditions per place. [2022-11-16 12:05:02,144 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 218 selfloop transitions, 32 changer transitions 0/477 dead transitions. [2022-11-16 12:05:02,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 477 transitions, 3003 flow [2022-11-16 12:05:02,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:05:02,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:05:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2639 transitions. [2022-11-16 12:05:02,151 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021276595744681 [2022-11-16 12:05:02,151 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2639 transitions. [2022-11-16 12:05:02,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2639 transitions. [2022-11-16 12:05:02,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:02,153 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2639 transitions. [2022-11-16 12:05:02,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 263.9) internal successors, (2639), 10 states have internal predecessors, (2639), 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) [2022-11-16 12:05:02,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 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) [2022-11-16 12:05:02,163 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 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) [2022-11-16 12:05:02,163 INFO L175 Difference]: Start difference. First operand has 353 places, 413 transitions, 2172 flow. Second operand 10 states and 2639 transitions. [2022-11-16 12:05:02,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 477 transitions, 3003 flow [2022-11-16 12:05:02,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 477 transitions, 2880 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-16 12:05:02,277 INFO L231 Difference]: Finished difference. Result has 348 places, 414 transitions, 2141 flow [2022-11-16 12:05:02,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2141, PETRI_PLACES=348, PETRI_TRANSITIONS=414} [2022-11-16 12:05:02,279 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 112 predicate places. [2022-11-16 12:05:02,280 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 414 transitions, 2141 flow [2022-11-16 12:05:02,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.0) internal successors, (1820), 7 states have internal predecessors, (1820), 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) [2022-11-16 12:05:02,280 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:02,281 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:02,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:05:02,281 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:05:02,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:02,282 INFO L85 PathProgramCache]: Analyzing trace with hash -811293357, now seen corresponding path program 1 times [2022-11-16 12:05:02,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:02,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364549800] [2022-11-16 12:05:02,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:02,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:05:02,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:02,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364549800] [2022-11-16 12:05:02,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364549800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:02,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:02,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:05:02,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756617654] [2022-11-16 12:05:02,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:02,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:05:02,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:02,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:05:02,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:02,619 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-16 12:05:02,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 414 transitions, 2141 flow. Second operand has 7 states, 7 states have (on average 260.42857142857144) internal successors, (1823), 7 states have internal predecessors, (1823), 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) [2022-11-16 12:05:02,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:02,621 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-16 12:05:02,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:07,890 INFO L130 PetriNetUnfolder]: 4411/21050 cut-off events. [2022-11-16 12:05:07,890 INFO L131 PetriNetUnfolder]: For 6701/6911 co-relation queries the response was YES. [2022-11-16 12:05:08,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37871 conditions, 21050 events. 4411/21050 cut-off events. For 6701/6911 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 235970 event pairs, 1710 based on Foata normal form. 75/19445 useless extension candidates. Maximal degree in co-relation 36098. Up to 3302 conditions per place. [2022-11-16 12:05:08,197 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 218 selfloop transitions, 32 changer transitions 0/477 dead transitions. [2022-11-16 12:05:08,197 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 477 transitions, 2950 flow [2022-11-16 12:05:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:05:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:05:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2639 transitions. [2022-11-16 12:05:08,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8021276595744681 [2022-11-16 12:05:08,203 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2639 transitions. [2022-11-16 12:05:08,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2639 transitions. [2022-11-16 12:05:08,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:08,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2639 transitions. [2022-11-16 12:05:08,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 263.9) internal successors, (2639), 10 states have internal predecessors, (2639), 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) [2022-11-16 12:05:08,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 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) [2022-11-16 12:05:08,217 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 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) [2022-11-16 12:05:08,217 INFO L175 Difference]: Start difference. First operand has 348 places, 414 transitions, 2141 flow. Second operand 10 states and 2639 transitions. [2022-11-16 12:05:08,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 477 transitions, 2950 flow [2022-11-16 12:05:08,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 477 transitions, 2906 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 12:05:08,302 INFO L231 Difference]: Finished difference. Result has 353 places, 414 transitions, 2167 flow [2022-11-16 12:05:08,303 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2167, PETRI_PLACES=353, PETRI_TRANSITIONS=414} [2022-11-16 12:05:08,304 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 117 predicate places. [2022-11-16 12:05:08,304 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 414 transitions, 2167 flow [2022-11-16 12:05:08,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.42857142857144) internal successors, (1823), 7 states have internal predecessors, (1823), 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) [2022-11-16 12:05:08,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:08,305 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:08,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:05:08,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:05:08,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash 21152899, now seen corresponding path program 1 times [2022-11-16 12:05:08,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:08,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869380486] [2022-11-16 12:05:08,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:08,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:08,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 12:05:08,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:08,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869380486] [2022-11-16 12:05:08,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869380486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:08,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:08,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:05:08,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399851873] [2022-11-16 12:05:08,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:08,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:05:08,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:08,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:05:08,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:08,596 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-16 12:05:08,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 414 transitions, 2167 flow. Second operand has 7 states, 7 states have (on average 260.14285714285717) internal successors, (1821), 7 states have internal predecessors, (1821), 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) [2022-11-16 12:05:08,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:08,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-16 12:05:08,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:13,669 INFO L130 PetriNetUnfolder]: 3601/17990 cut-off events. [2022-11-16 12:05:13,669 INFO L131 PetriNetUnfolder]: For 8250/8475 co-relation queries the response was YES. [2022-11-16 12:05:13,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31109 conditions, 17990 events. 3601/17990 cut-off events. For 8250/8475 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 203320 event pairs, 1290 based on Foata normal form. 0/15950 useless extension candidates. Maximal degree in co-relation 28809. Up to 2971 conditions per place. [2022-11-16 12:05:13,909 INFO L137 encePairwiseOnDemand]: 317/329 looper letters, 277 selfloop transitions, 31 changer transitions 1/536 dead transitions. [2022-11-16 12:05:13,909 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 536 transitions, 3543 flow [2022-11-16 12:05:13,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:05:13,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-16 12:05:13,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2649 transitions. [2022-11-16 12:05:13,914 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8051671732522796 [2022-11-16 12:05:13,915 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2649 transitions. [2022-11-16 12:05:13,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2649 transitions. [2022-11-16 12:05:13,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:13,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2649 transitions. [2022-11-16 12:05:13,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 264.9) internal successors, (2649), 10 states have internal predecessors, (2649), 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) [2022-11-16 12:05:13,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 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) [2022-11-16 12:05:13,928 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 329.0) internal successors, (3619), 11 states have internal predecessors, (3619), 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) [2022-11-16 12:05:13,928 INFO L175 Difference]: Start difference. First operand has 353 places, 414 transitions, 2167 flow. Second operand 10 states and 2649 transitions. [2022-11-16 12:05:13,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 536 transitions, 3543 flow [2022-11-16 12:05:14,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 536 transitions, 3437 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 12:05:14,009 INFO L231 Difference]: Finished difference. Result has 354 places, 414 transitions, 2170 flow [2022-11-16 12:05:14,010 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2170, PETRI_PLACES=354, PETRI_TRANSITIONS=414} [2022-11-16 12:05:14,011 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 118 predicate places. [2022-11-16 12:05:14,011 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 414 transitions, 2170 flow [2022-11-16 12:05:14,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.14285714285717) internal successors, (1821), 7 states have internal predecessors, (1821), 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) [2022-11-16 12:05:14,012 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:14,012 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:14,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:05:14,013 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:05:14,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:14,013 INFO L85 PathProgramCache]: Analyzing trace with hash 1981518659, now seen corresponding path program 1 times [2022-11-16 12:05:14,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:14,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752876627] [2022-11-16 12:05:14,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:14,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:14,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 12:05:14,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:14,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752876627] [2022-11-16 12:05:14,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752876627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:05:14,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:05:14,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:05:14,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369131239] [2022-11-16 12:05:14,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:05:14,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:05:14,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:14,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:05:14,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:05:14,283 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 329 [2022-11-16 12:05:14,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 414 transitions, 2170 flow. Second operand has 7 states, 7 states have (on average 260.57142857142856) internal successors, (1824), 7 states have internal predecessors, (1824), 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) [2022-11-16 12:05:14,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:14,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 329 [2022-11-16 12:05:14,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:05:22,262 INFO L130 PetriNetUnfolder]: 7499/32031 cut-off events. [2022-11-16 12:05:22,262 INFO L131 PetriNetUnfolder]: For 11691/11691 co-relation queries the response was YES. [2022-11-16 12:05:22,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54861 conditions, 32031 events. 7499/32031 cut-off events. For 11691/11691 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 393667 event pairs, 2693 based on Foata normal form. 21/28836 useless extension candidates. Maximal degree in co-relation 50817. Up to 5452 conditions per place. [2022-11-16 12:05:22,630 INFO L137 encePairwiseOnDemand]: 319/329 looper letters, 196 selfloop transitions, 10 changer transitions 0/433 dead transitions. [2022-11-16 12:05:22,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 433 transitions, 2636 flow [2022-11-16 12:05:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 12:05:22,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 12:05:22,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2117 transitions. [2022-11-16 12:05:22,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8043313069908815 [2022-11-16 12:05:22,634 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2117 transitions. [2022-11-16 12:05:22,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2117 transitions. [2022-11-16 12:05:22,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:05:22,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2117 transitions. [2022-11-16 12:05:22,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 264.625) internal successors, (2117), 8 states have internal predecessors, (2117), 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) [2022-11-16 12:05:22,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 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) [2022-11-16 12:05:22,644 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 329.0) internal successors, (2961), 9 states have internal predecessors, (2961), 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) [2022-11-16 12:05:22,644 INFO L175 Difference]: Start difference. First operand has 354 places, 414 transitions, 2170 flow. Second operand 8 states and 2117 transitions. [2022-11-16 12:05:22,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 433 transitions, 2636 flow [2022-11-16 12:05:22,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 433 transitions, 2574 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 12:05:22,891 INFO L231 Difference]: Finished difference. Result has 353 places, 414 transitions, 2131 flow [2022-11-16 12:05:22,892 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=329, PETRI_DIFFERENCE_MINUEND_FLOW=2108, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2131, PETRI_PLACES=353, PETRI_TRANSITIONS=414} [2022-11-16 12:05:22,894 INFO L288 CegarLoopForPetriNet]: 236 programPoint places, 117 predicate places. [2022-11-16 12:05:22,894 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 414 transitions, 2131 flow [2022-11-16 12:05:22,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 260.57142857142856) internal successors, (1824), 7 states have internal predecessors, (1824), 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) [2022-11-16 12:05:22,895 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:05:22,895 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:05:22,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:05:22,896 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-11-16 12:05:22,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:05:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1519458832, now seen corresponding path program 1 times [2022-11-16 12:05:22,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:05:22,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481374307] [2022-11-16 12:05:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:22,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:05:22,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:23,237 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:05:23,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:05:23,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481374307] [2022-11-16 12:05:23,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481374307] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:05:23,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66438259] [2022-11-16 12:05:23,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:05:23,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:05:23,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:05:23,241 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:05:23,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dbfbc959-5ce5-4dcf-b97f-1ec20d5ee40b/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:05:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:05:23,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:05:23,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:05:24,045 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:05:24,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:05:24,563 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:05:24,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66438259] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:05:24,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:05:24,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-11-16 12:05:24,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195218564] [2022-11-16 12:05:24,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:05:24,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-16 12:05:24,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:05:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-16 12:05:24,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=640, Unknown=0, NotChecked=0, Total=756 [2022-11-16 12:05:24,573 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 329 [2022-11-16 12:05:24,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 414 transitions, 2131 flow. Second operand has 28 states, 28 states have (on average 235.10714285714286) internal successors, (6583), 28 states have internal predecessors, (6583), 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) [2022-11-16 12:05:24,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:05:24,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 329 [2022-11-16 12:05:24,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand