./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R --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 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 --- 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-38b53e6 [2022-11-25 15:28:58,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 15:28:58,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 15:28:58,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 15:28:58,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 15:28:58,197 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 15:28:58,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 15:28:58,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 15:28:58,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 15:28:58,206 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 15:28:58,207 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 15:28:58,208 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 15:28:58,209 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 15:28:58,210 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 15:28:58,211 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 15:28:58,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 15:28:58,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 15:28:58,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 15:28:58,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 15:28:58,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 15:28:58,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 15:28:58,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 15:28:58,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 15:28:58,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 15:28:58,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 15:28:58,235 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 15:28:58,236 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 15:28:58,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 15:28:58,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 15:28:58,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 15:28:58,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 15:28:58,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 15:28:58,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 15:28:58,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 15:28:58,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 15:28:58,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 15:28:58,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 15:28:58,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 15:28:58,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 15:28:58,246 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 15:28:58,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 15:28:58,248 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-25 15:28:58,277 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 15:28:58,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 15:28:58,278 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 15:28:58,278 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 15:28:58,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 15:28:58,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 15:28:58,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 15:28:58,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 15:28:58,281 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 15:28:58,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 15:28:58,281 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 15:28:58,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 15:28:58,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 15:28:58,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 15:28:58,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 15:28:58,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 15:28:58,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 15:28:58,286 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 15:28:58,288 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 15:28:58,288 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 15:28:58,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 15:28:58,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 15:28:58,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 15:28:58,289 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 15:28:58,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 15:28:58,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 15:28:58,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:28:58,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 15:28:58,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 15:28:58,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 15:28:58,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 15:28:58,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 15:28:58,292 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 15:28:58,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 15:28:58,292 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 15:28:58,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 15:28:58,293 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 362fd638a164593c63fbfc307f633b7ac4c475762218e6a2237e90d5b6553a84 [2022-11-25 15:28:58,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 15:28:58,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 15:28:58,597 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 15:28:58,598 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 15:28:58,599 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 15:28:58,600 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2022-11-25 15:29:01,525 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 15:29:01,793 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 15:29:01,793 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2022-11-25 15:29:01,801 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/data/9beb72562/26cd921e6ef648f3b8e5b1ffbd0dac80/FLAG38c89bbfd [2022-11-25 15:29:01,822 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/data/9beb72562/26cd921e6ef648f3b8e5b1ffbd0dac80 [2022-11-25 15:29:01,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 15:29:01,831 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 15:29:01,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:01,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 15:29:01,836 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 15:29:01,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:01" (1/1) ... [2022-11-25 15:29:01,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3490195b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:01, skipping insertion in model container [2022-11-25 15:29:01,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 03:29:01" (1/1) ... [2022-11-25 15:29:01,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 15:29:01,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 15:29:02,088 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-11-25 15:29:02,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:02,102 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 15:29:02,124 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c[2434,2447] [2022-11-25 15:29:02,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 15:29:02,142 INFO L208 MainTranslator]: Completed translation [2022-11-25 15:29:02,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02 WrapperNode [2022-11-25 15:29:02,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 15:29:02,143 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 15:29:02,143 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 15:29:02,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 15:29:02,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,180 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 107 [2022-11-25 15:29:02,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 15:29:02,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 15:29:02,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 15:29:02,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 15:29:02,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 15:29:02,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 15:29:02,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 15:29:02,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 15:29:02,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (1/1) ... [2022-11-25 15:29:02,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 15:29:02,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:02,251 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 15:29:02,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 15:29:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 15:29:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 15:29:02,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 15:29:02,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 15:29:02,300 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 15:29:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 15:29:02,301 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 15:29:02,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 15:29:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 15:29:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 15:29:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 15:29:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 15:29:02,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 15:29:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 15:29:02,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 15:29:02,304 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 15:29:02,491 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 15:29:02,508 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 15:29:02,959 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 15:29:02,968 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 15:29:02,968 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 15:29:02,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:02 BoogieIcfgContainer [2022-11-25 15:29:02,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 15:29:02,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 15:29:02,984 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 15:29:02,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 15:29:02,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 03:29:01" (1/3) ... [2022-11-25 15:29:02,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221f3e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:29:02, skipping insertion in model container [2022-11-25 15:29:02,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 03:29:02" (2/3) ... [2022-11-25 15:29:02,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221f3e16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 03:29:02, skipping insertion in model container [2022-11-25 15:29:02,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 03:29:02" (3/3) ... [2022-11-25 15:29:02,990 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2022-11-25 15:29:03,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-25 15:29:03,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 15:29:03,012 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-25 15:29:03,013 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 15:29:03,168 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 15:29:03,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 219 transitions, 462 flow [2022-11-25 15:29:03,335 INFO L130 PetriNetUnfolder]: 15/216 cut-off events. [2022-11-25 15:29:03,335 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 15:29:03,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229 conditions, 216 events. 15/216 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 358 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2022-11-25 15:29:03,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 219 transitions, 462 flow [2022-11-25 15:29:03,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 195 transitions, 405 flow [2022-11-25 15:29:03,361 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 15:29:03,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 191 places, 195 transitions, 405 flow [2022-11-25 15:29:03,384 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 191 places, 195 transitions, 405 flow [2022-11-25 15:29:03,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 195 transitions, 405 flow [2022-11-25 15:29:03,479 INFO L130 PetriNetUnfolder]: 14/195 cut-off events. [2022-11-25 15:29:03,479 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-25 15:29:03,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 195 events. 14/195 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 356 event pairs, 0 based on Foata normal form. 0/163 useless extension candidates. Maximal degree in co-relation 158. Up to 2 conditions per place. [2022-11-25 15:29:03,489 INFO L119 LiptonReduction]: Number of co-enabled transitions 7406 [2022-11-25 15:29:12,597 INFO L134 LiptonReduction]: Checked pairs total: 9020 [2022-11-25 15:29:12,597 INFO L136 LiptonReduction]: Total number of compositions: 215 [2022-11-25 15:29:12,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 15:29:12,642 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;@5b3b3b02, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 15:29:12,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2022-11-25 15:29:12,649 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 15:29:12,650 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 15:29:12,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:12,651 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 15:29:12,652 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:12,661 INFO L85 PathProgramCache]: Analyzing trace with hash 26868, now seen corresponding path program 1 times [2022-11-25 15:29:12,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:12,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823769050] [2022-11-25 15:29:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:12,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:12,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:13,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:13,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:13,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823769050] [2022-11-25 15:29:13,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823769050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:13,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:13,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:13,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59777214] [2022-11-25 15:29:13,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:13,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:13,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:13,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:13,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:13,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 434 [2022-11-25 15:29:13,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2022-11-25 15:29:13,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:13,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 434 [2022-11-25 15:29:13,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:14,660 INFO L130 PetriNetUnfolder]: 9161/12051 cut-off events. [2022-11-25 15:29:14,660 INFO L131 PetriNetUnfolder]: For 216/216 co-relation queries the response was YES. [2022-11-25 15:29:14,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24129 conditions, 12051 events. 9161/12051 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 1109. Compared 64065 event pairs, 4728 based on Foata normal form. 0/4513 useless extension candidates. Maximal degree in co-relation 11015. Up to 5797 conditions per place. [2022-11-25 15:29:14,760 INFO L137 encePairwiseOnDemand]: 427/434 looper letters, 71 selfloop transitions, 2 changer transitions 0/78 dead transitions. [2022-11-25 15:29:14,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 78 transitions, 332 flow [2022-11-25 15:29:14,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:14,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 684 transitions. [2022-11-25 15:29:14,782 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5253456221198156 [2022-11-25 15:29:14,783 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 684 transitions. [2022-11-25 15:29:14,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 684 transitions. [2022-11-25 15:29:14,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:14,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 684 transitions. [2022-11-25 15:29:14,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.0) internal successors, (684), 3 states have internal predecessors, (684), 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) [2022-11-25 15:29:14,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:14,807 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:14,809 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 107 flow. Second operand 3 states and 684 transitions. [2022-11-25 15:29:14,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 78 transitions, 332 flow [2022-11-25 15:29:14,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 314 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-25 15:29:14,879 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 106 flow [2022-11-25 15:29:14,881 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2022-11-25 15:29:14,886 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2022-11-25 15:29:14,886 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 106 flow [2022-11-25 15:29:14,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2022-11-25 15:29:14,887 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:14,887 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 15:29:14,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 15:29:14,889 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:14,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:14,893 INFO L85 PathProgramCache]: Analyzing trace with hash 834418, now seen corresponding path program 1 times [2022-11-25 15:29:14,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:14,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440503882] [2022-11-25 15:29:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:14,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:14,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:14,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:14,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440503882] [2022-11-25 15:29:14,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440503882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:14,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039154631] [2022-11-25 15:29:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:14,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:14,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:14,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:15,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 15:29:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:15,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:29:15,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:15,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:15,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:15,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:15,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039154631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:15,225 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:15,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2022-11-25 15:29:15,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532193170] [2022-11-25 15:29:15,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:15,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:29:15,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:15,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:29:15,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:29:15,275 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 434 [2022-11-25 15:29:15,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 106 flow. Second operand has 7 states, 7 states have (on average 202.14285714285714) internal successors, (1415), 7 states have internal predecessors, (1415), 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) [2022-11-25 15:29:15,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:15,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 434 [2022-11-25 15:29:15,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:18,774 INFO L130 PetriNetUnfolder]: 22904/30126 cut-off events. [2022-11-25 15:29:18,774 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-25 15:29:18,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59973 conditions, 30126 events. 22904/30126 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 2295. Compared 176397 event pairs, 11820 based on Foata normal form. 0/11331 useless extension candidates. Maximal degree in co-relation 47975. Up to 5796 conditions per place. [2022-11-25 15:29:18,955 INFO L137 encePairwiseOnDemand]: 430/434 looper letters, 172 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2022-11-25 15:29:18,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 186 transitions, 788 flow [2022-11-25 15:29:18,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 15:29:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-25 15:29:18,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1591 transitions. [2022-11-25 15:29:18,960 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5236998025016458 [2022-11-25 15:29:18,960 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1591 transitions. [2022-11-25 15:29:18,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1591 transitions. [2022-11-25 15:29:18,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:18,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1591 transitions. [2022-11-25 15:29:18,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 227.28571428571428) internal successors, (1591), 7 states have internal predecessors, (1591), 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) [2022-11-25 15:29:18,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 434.0) internal successors, (3472), 8 states have internal predecessors, (3472), 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) [2022-11-25 15:29:18,973 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 434.0) internal successors, (3472), 8 states have internal predecessors, (3472), 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) [2022-11-25 15:29:18,974 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 106 flow. Second operand 7 states and 1591 transitions. [2022-11-25 15:29:18,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 186 transitions, 788 flow [2022-11-25 15:29:18,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 186 transitions, 786 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:18,978 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 163 flow [2022-11-25 15:29:18,978 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=163, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2022-11-25 15:29:18,979 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2022-11-25 15:29:18,979 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 163 flow [2022-11-25 15:29:18,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 202.14285714285714) internal successors, (1415), 7 states have internal predecessors, (1415), 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) [2022-11-25 15:29:18,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:18,980 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2022-11-25 15:29:18,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:19,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 15:29:19,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:19,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:19,187 INFO L85 PathProgramCache]: Analyzing trace with hash 25868467, now seen corresponding path program 1 times [2022-11-25 15:29:19,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:19,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003551518] [2022-11-25 15:29:19,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:19,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:19,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:19,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:19,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003551518] [2022-11-25 15:29:19,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003551518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:19,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305555833] [2022-11-25 15:29:19,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:19,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:19,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:19,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:19,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 15:29:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:19,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 15:29:19,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:19,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:19,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305555833] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:19,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:19,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 15:29:19,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8605194] [2022-11-25 15:29:19,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:19,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:29:19,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:19,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:29:19,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 15:29:19,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 434 [2022-11-25 15:29:19,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 201.8) internal successors, (1009), 5 states have internal predecessors, (1009), 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) [2022-11-25 15:29:19,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:19,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 434 [2022-11-25 15:29:19,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:22,380 INFO L130 PetriNetUnfolder]: 22901/30122 cut-off events. [2022-11-25 15:29:22,381 INFO L131 PetriNetUnfolder]: For 46/46 co-relation queries the response was YES. [2022-11-25 15:29:22,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59975 conditions, 30122 events. 22901/30122 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 2308. Compared 176795 event pairs, 11820 based on Foata normal form. 2/11334 useless extension candidates. Maximal degree in co-relation 35975. Up to 17381 conditions per place. [2022-11-25 15:29:22,548 INFO L137 encePairwiseOnDemand]: 431/434 looper letters, 106 selfloop transitions, 3 changer transitions 0/114 dead transitions. [2022-11-25 15:29:22,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 114 transitions, 502 flow [2022-11-25 15:29:22,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 15:29:22,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-25 15:29:22,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1114 transitions. [2022-11-25 15:29:22,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5133640552995392 [2022-11-25 15:29:22,552 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1114 transitions. [2022-11-25 15:29:22,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1114 transitions. [2022-11-25 15:29:22,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:22,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1114 transitions. [2022-11-25 15:29:22,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 222.8) internal successors, (1114), 5 states have internal predecessors, (1114), 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) [2022-11-25 15:29:22,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 434.0) internal successors, (2604), 6 states have internal predecessors, (2604), 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) [2022-11-25 15:29:22,561 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 434.0) internal successors, (2604), 6 states have internal predecessors, (2604), 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) [2022-11-25 15:29:22,562 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 163 flow. Second operand 5 states and 1114 transitions. [2022-11-25 15:29:22,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 114 transitions, 502 flow [2022-11-25 15:29:22,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 114 transitions, 494 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:22,567 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 134 flow [2022-11-25 15:29:22,567 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=134, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2022-11-25 15:29:22,570 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 4 predicate places. [2022-11-25 15:29:22,570 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 134 flow [2022-11-25 15:29:22,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.8) internal successors, (1009), 5 states have internal predecessors, (1009), 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) [2022-11-25 15:29:22,572 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:22,576 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:29:22,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:22,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:22,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:22,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:22,783 INFO L85 PathProgramCache]: Analyzing trace with hash 802112697, now seen corresponding path program 1 times [2022-11-25 15:29:22,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:22,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136354568] [2022-11-25 15:29:22,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:22,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:22,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:22,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136354568] [2022-11-25 15:29:22,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136354568] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:22,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:22,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:22,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645619011] [2022-11-25 15:29:22,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:22,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:29:22,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:22,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:29:22,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:29:22,959 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 196 out of 434 [2022-11-25 15:29:22,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2022-11-25 15:29:22,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:22,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 196 of 434 [2022-11-25 15:29:22,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:25,357 INFO L130 PetriNetUnfolder]: 22901/29272 cut-off events. [2022-11-25 15:29:25,358 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2022-11-25 15:29:25,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59125 conditions, 29272 events. 22901/29272 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 2151. Compared 159299 event pairs, 11820 based on Foata normal form. 0/10362 useless extension candidates. Maximal degree in co-relation 47281. Up to 28967 conditions per place. [2022-11-25 15:29:25,617 INFO L137 encePairwiseOnDemand]: 431/434 looper letters, 40 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2022-11-25 15:29:25,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 212 flow [2022-11-25 15:29:25,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 627 transitions. [2022-11-25 15:29:25,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4815668202764977 [2022-11-25 15:29:25,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 627 transitions. [2022-11-25 15:29:25,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 627 transitions. [2022-11-25 15:29:25,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:25,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 627 transitions. [2022-11-25 15:29:25,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.0) internal successors, (627), 3 states have internal predecessors, (627), 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) [2022-11-25 15:29:25,629 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:25,630 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:25,631 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 134 flow. Second operand 3 states and 627 transitions. [2022-11-25 15:29:25,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 212 flow [2022-11-25 15:29:25,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 207 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-25 15:29:25,635 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 127 flow [2022-11-25 15:29:25,635 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2022-11-25 15:29:25,637 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2022-11-25 15:29:25,638 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 127 flow [2022-11-25 15:29:25,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2022-11-25 15:29:25,640 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:25,640 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:29:25,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 15:29:25,640 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:25,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:25,641 INFO L85 PathProgramCache]: Analyzing trace with hash 802112992, now seen corresponding path program 1 times [2022-11-25 15:29:25,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:25,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445878604] [2022-11-25 15:29:25,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:25,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:25,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:25,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445878604] [2022-11-25 15:29:25,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445878604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:25,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:25,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:25,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310043543] [2022-11-25 15:29:25,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:25,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:25,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:25,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:25,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:25,720 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 434 [2022-11-25 15:29:25,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2022-11-25 15:29:25,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:25,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 434 [2022-11-25 15:29:25,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:28,872 INFO L130 PetriNetUnfolder]: 34721/44892 cut-off events. [2022-11-25 15:29:28,873 INFO L131 PetriNetUnfolder]: For 283/283 co-relation queries the response was YES. [2022-11-25 15:29:28,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90924 conditions, 44892 events. 34721/44892 cut-off events. For 283/283 co-relation queries the response was YES. Maximal size of possible extension queue 3033. Compared 259250 event pairs, 10520 based on Foata normal form. 0/17577 useless extension candidates. Maximal degree in co-relation 90912. Up to 27178 conditions per place. [2022-11-25 15:29:29,173 INFO L137 encePairwiseOnDemand]: 429/434 looper letters, 69 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2022-11-25 15:29:29,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 73 transitions, 332 flow [2022-11-25 15:29:29,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:29,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2022-11-25 15:29:29,177 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5145929339477726 [2022-11-25 15:29:29,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2022-11-25 15:29:29,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2022-11-25 15:29:29,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:29,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2022-11-25 15:29:29,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 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) [2022-11-25 15:29:29,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:29,184 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:29,185 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 127 flow. Second operand 3 states and 670 transitions. [2022-11-25 15:29:29,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 73 transitions, 332 flow [2022-11-25 15:29:29,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 73 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:29,187 INFO L231 Difference]: Finished difference. Result has 53 places, 45 transitions, 142 flow [2022-11-25 15:29:29,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=45} [2022-11-25 15:29:29,188 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 3 predicate places. [2022-11-25 15:29:29,188 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 45 transitions, 142 flow [2022-11-25 15:29:29,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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) [2022-11-25 15:29:29,189 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:29,189 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 15:29:29,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 15:29:29,189 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:29,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:29,190 INFO L85 PathProgramCache]: Analyzing trace with hash 802112812, now seen corresponding path program 1 times [2022-11-25 15:29:29,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:29,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711271605] [2022-11-25 15:29:29,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:29,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:29,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:29,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711271605] [2022-11-25 15:29:29,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711271605] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:29,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:29,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 15:29:29,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978292484] [2022-11-25 15:29:29,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:29,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:29,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:29,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:29,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:29,247 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 434 [2022-11-25 15:29:29,248 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 45 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2022-11-25 15:29:29,248 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:29,248 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 434 [2022-11-25 15:29:29,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:31,165 INFO L130 PetriNetUnfolder]: 22841/29907 cut-off events. [2022-11-25 15:29:31,165 INFO L131 PetriNetUnfolder]: For 1568/2078 co-relation queries the response was YES. [2022-11-25 15:29:31,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63710 conditions, 29907 events. 22841/29907 cut-off events. For 1568/2078 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 172436 event pairs, 12900 based on Foata normal form. 510/13527 useless extension candidates. Maximal degree in co-relation 63697. Up to 29612 conditions per place. [2022-11-25 15:29:31,285 INFO L137 encePairwiseOnDemand]: 431/434 looper letters, 39 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2022-11-25 15:29:31,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 43 transitions, 218 flow [2022-11-25 15:29:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 631 transitions. [2022-11-25 15:29:31,288 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4846390168970814 [2022-11-25 15:29:31,288 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 631 transitions. [2022-11-25 15:29:31,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 631 transitions. [2022-11-25 15:29:31,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:31,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 631 transitions. [2022-11-25 15:29:31,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 210.33333333333334) internal successors, (631), 3 states have internal predecessors, (631), 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) [2022-11-25 15:29:31,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:31,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:31,294 INFO L175 Difference]: Start difference. First operand has 53 places, 45 transitions, 142 flow. Second operand 3 states and 631 transitions. [2022-11-25 15:29:31,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 43 transitions, 218 flow [2022-11-25 15:29:31,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 216 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:31,296 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 138 flow [2022-11-25 15:29:31,297 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2022-11-25 15:29:31,297 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2022-11-25 15:29:31,297 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 138 flow [2022-11-25 15:29:31,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.33333333333334) internal successors, (598), 3 states have internal predecessors, (598), 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) [2022-11-25 15:29:31,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:31,298 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 15:29:31,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 15:29:31,299 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:31,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:31,299 INFO L85 PathProgramCache]: Analyzing trace with hash -910157708, now seen corresponding path program 2 times [2022-11-25 15:29:31,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:31,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904805216] [2022-11-25 15:29:31,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:31,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:31,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:31,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:31,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904805216] [2022-11-25 15:29:31,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904805216] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:31,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559768837] [2022-11-25 15:29:31,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:29:31,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:31,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:31,396 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:31,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 15:29:31,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:29:31,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:29:31,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:29:31,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 15:29:31,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:31,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559768837] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:31,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:31,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2022-11-25 15:29:31,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797146375] [2022-11-25 15:29:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:31,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:31,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:31,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-25 15:29:31,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 434 [2022-11-25 15:29:31,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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) [2022-11-25 15:29:31,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:31,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 434 [2022-11-25 15:29:31,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:34,096 INFO L130 PetriNetUnfolder]: 22841/29906 cut-off events. [2022-11-25 15:29:34,097 INFO L131 PetriNetUnfolder]: For 1563/2073 co-relation queries the response was YES. [2022-11-25 15:29:34,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63190 conditions, 29906 events. 22841/29906 cut-off events. For 1563/2073 co-relation queries the response was YES. Maximal size of possible extension queue 2026. Compared 172482 event pairs, 12900 based on Foata normal form. 511/13527 useless extension candidates. Maximal degree in co-relation 63176. Up to 29611 conditions per place. [2022-11-25 15:29:34,205 INFO L137 encePairwiseOnDemand]: 432/434 looper letters, 38 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2022-11-25 15:29:34,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 206 flow [2022-11-25 15:29:34,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:34,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:34,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 641 transitions. [2022-11-25 15:29:34,208 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4923195084485407 [2022-11-25 15:29:34,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 641 transitions. [2022-11-25 15:29:34,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 641 transitions. [2022-11-25 15:29:34,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:34,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 641 transitions. [2022-11-25 15:29:34,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 213.66666666666666) internal successors, (641), 3 states have internal predecessors, (641), 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) [2022-11-25 15:29:34,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:34,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:34,214 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 138 flow. Second operand 3 states and 641 transitions. [2022-11-25 15:29:34,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 206 flow [2022-11-25 15:29:34,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 42 transitions, 195 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-25 15:29:34,216 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 119 flow [2022-11-25 15:29:34,216 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2022-11-25 15:29:34,217 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -2 predicate places. [2022-11-25 15:29:34,217 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 119 flow [2022-11-25 15:29:34,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.0) internal successors, (609), 3 states have internal predecessors, (609), 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) [2022-11-25 15:29:34,218 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:34,218 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:34,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:34,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:34,426 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:34,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:34,426 INFO L85 PathProgramCache]: Analyzing trace with hash 2031470565, now seen corresponding path program 1 times [2022-11-25 15:29:34,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:34,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148791726] [2022-11-25 15:29:34,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:34,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:34,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:34,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148791726] [2022-11-25 15:29:34,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148791726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:34,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:34,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:34,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901763073] [2022-11-25 15:29:34,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:34,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:34,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:34,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:34,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:34,493 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 434 [2022-11-25 15:29:34,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 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) [2022-11-25 15:29:34,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:34,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 434 [2022-11-25 15:29:34,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:36,680 INFO L130 PetriNetUnfolder]: 22731/29241 cut-off events. [2022-11-25 15:29:36,680 INFO L131 PetriNetUnfolder]: For 615/615 co-relation queries the response was YES. [2022-11-25 15:29:36,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61582 conditions, 29241 events. 22731/29241 cut-off events. For 615/615 co-relation queries the response was YES. Maximal size of possible extension queue 1804. Compared 164812 event pairs, 825 based on Foata normal form. 550/13566 useless extension candidates. Maximal degree in co-relation 61571. Up to 27530 conditions per place. [2022-11-25 15:29:36,787 INFO L137 encePairwiseOnDemand]: 431/434 looper letters, 55 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2022-11-25 15:29:36,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 58 transitions, 262 flow [2022-11-25 15:29:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:36,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 653 transitions. [2022-11-25 15:29:36,791 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5015360983102919 [2022-11-25 15:29:36,791 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 653 transitions. [2022-11-25 15:29:36,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 653 transitions. [2022-11-25 15:29:36,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:36,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 653 transitions. [2022-11-25 15:29:36,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.66666666666666) internal successors, (653), 3 states have internal predecessors, (653), 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) [2022-11-25 15:29:36,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:36,798 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:36,798 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 119 flow. Second operand 3 states and 653 transitions. [2022-11-25 15:29:36,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 58 transitions, 262 flow [2022-11-25 15:29:36,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 58 transitions, 261 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:36,801 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 112 flow [2022-11-25 15:29:36,801 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2022-11-25 15:29:36,802 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -3 predicate places. [2022-11-25 15:29:36,802 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 112 flow [2022-11-25 15:29:36,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 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) [2022-11-25 15:29:36,803 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:36,803 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:36,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 15:29:36,804 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:36,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash 2039034013, now seen corresponding path program 1 times [2022-11-25 15:29:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:36,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539063543] [2022-11-25 15:29:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:36,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:36,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539063543] [2022-11-25 15:29:36,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539063543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:36,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:36,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:36,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545423232] [2022-11-25 15:29:36,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:36,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:36,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:36,863 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 434 [2022-11-25 15:29:36,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 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) [2022-11-25 15:29:36,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:36,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 434 [2022-11-25 15:29:36,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:39,587 INFO L130 PetriNetUnfolder]: 26461/35086 cut-off events. [2022-11-25 15:29:39,588 INFO L131 PetriNetUnfolder]: For 2115/2115 co-relation queries the response was YES. [2022-11-25 15:29:39,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73672 conditions, 35086 events. 26461/35086 cut-off events. For 2115/2115 co-relation queries the response was YES. Maximal size of possible extension queue 2067. Compared 212071 event pairs, 11260 based on Foata normal form. 0/17636 useless extension candidates. Maximal degree in co-relation 73661. Up to 23762 conditions per place. [2022-11-25 15:29:39,695 INFO L137 encePairwiseOnDemand]: 428/434 looper letters, 59 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2022-11-25 15:29:39,695 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 63 transitions, 290 flow [2022-11-25 15:29:39,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 659 transitions. [2022-11-25 15:29:39,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5061443932411674 [2022-11-25 15:29:39,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 659 transitions. [2022-11-25 15:29:39,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 659 transitions. [2022-11-25 15:29:39,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:39,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 659 transitions. [2022-11-25 15:29:39,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.66666666666666) internal successors, (659), 3 states have internal predecessors, (659), 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) [2022-11-25 15:29:39,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:39,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:39,704 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 112 flow. Second operand 3 states and 659 transitions. [2022-11-25 15:29:39,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 63 transitions, 290 flow [2022-11-25 15:29:39,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 63 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:39,706 INFO L231 Difference]: Finished difference. Result has 49 places, 41 transitions, 129 flow [2022-11-25 15:29:39,706 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=49, PETRI_TRANSITIONS=41} [2022-11-25 15:29:39,707 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, -1 predicate places. [2022-11-25 15:29:39,707 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 41 transitions, 129 flow [2022-11-25 15:29:39,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 202.33333333333334) internal successors, (607), 3 states have internal predecessors, (607), 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) [2022-11-25 15:29:39,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:39,708 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:39,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 15:29:39,708 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:39,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:39,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1448921010, now seen corresponding path program 1 times [2022-11-25 15:29:39,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:39,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484540610] [2022-11-25 15:29:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:39,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:39,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:39,763 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 15:29:39,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:39,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484540610] [2022-11-25 15:29:39,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484540610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:39,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708076166] [2022-11-25 15:29:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:39,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:39,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:39,765 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:39,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 15:29:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:39,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-25 15:29:39,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:39,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 15:29:39,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708076166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:39,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 15:29:39,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3] total 7 [2022-11-25 15:29:39,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761566917] [2022-11-25 15:29:39,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:39,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 15:29:39,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:39,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 15:29:39,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:29:40,025 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 434 [2022-11-25 15:29:40,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 41 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 190.6) internal successors, (953), 5 states have internal predecessors, (953), 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) [2022-11-25 15:29:40,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:40,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 434 [2022-11-25 15:29:40,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:42,261 INFO L130 PetriNetUnfolder]: 20977/27966 cut-off events. [2022-11-25 15:29:42,261 INFO L131 PetriNetUnfolder]: For 2864/3344 co-relation queries the response was YES. [2022-11-25 15:29:42,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63496 conditions, 27966 events. 20977/27966 cut-off events. For 2864/3344 co-relation queries the response was YES. Maximal size of possible extension queue 1742. Compared 166524 event pairs, 13324 based on Foata normal form. 481/15047 useless extension candidates. Maximal degree in co-relation 63484. Up to 27802 conditions per place. [2022-11-25 15:29:42,394 INFO L137 encePairwiseOnDemand]: 431/434 looper letters, 37 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2022-11-25 15:29:42,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 41 transitions, 207 flow [2022-11-25 15:29:42,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:42,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:42,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2022-11-25 15:29:42,397 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2022-11-25 15:29:42,398 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 602 transitions. [2022-11-25 15:29:42,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 602 transitions. [2022-11-25 15:29:42,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:42,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 602 transitions. [2022-11-25 15:29:42,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 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) [2022-11-25 15:29:42,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:42,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:42,404 INFO L175 Difference]: Start difference. First operand has 49 places, 41 transitions, 129 flow. Second operand 3 states and 602 transitions. [2022-11-25 15:29:42,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 41 transitions, 207 flow [2022-11-25 15:29:42,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 41 transitions, 203 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:42,408 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 133 flow [2022-11-25 15:29:42,409 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2022-11-25 15:29:42,409 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2022-11-25 15:29:42,410 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 133 flow [2022-11-25 15:29:42,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 190.6) internal successors, (953), 5 states have internal predecessors, (953), 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) [2022-11-25 15:29:42,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:42,411 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:42,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:42,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 15:29:42,616 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:42,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:42,616 INFO L85 PathProgramCache]: Analyzing trace with hash 955987020, now seen corresponding path program 1 times [2022-11-25 15:29:42,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:42,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757310991] [2022-11-25 15:29:42,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:42,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:42,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:42,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:42,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757310991] [2022-11-25 15:29:42,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757310991] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:42,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022202604] [2022-11-25 15:29:42,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:42,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:42,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:42,713 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:42,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 15:29:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:42,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 15:29:42,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:43,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:43,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:43,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022202604] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:43,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:43,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2022-11-25 15:29:43,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973839365] [2022-11-25 15:29:43,116 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:43,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 15:29:43,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:43,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 15:29:43,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-25 15:29:43,437 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 434 [2022-11-25 15:29:43,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 133 flow. Second operand has 11 states, 11 states have (on average 188.0909090909091) internal successors, (2069), 11 states have internal predecessors, (2069), 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) [2022-11-25 15:29:43,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:43,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 434 [2022-11-25 15:29:43,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:46,192 INFO L130 PetriNetUnfolder]: 24684/32670 cut-off events. [2022-11-25 15:29:46,192 INFO L131 PetriNetUnfolder]: For 2617/3238 co-relation queries the response was YES. [2022-11-25 15:29:46,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73185 conditions, 32670 events. 24684/32670 cut-off events. For 2617/3238 co-relation queries the response was YES. Maximal size of possible extension queue 1754. Compared 196593 event pairs, 4914 based on Foata normal form. 621/17706 useless extension candidates. Maximal degree in co-relation 73171. Up to 9155 conditions per place. [2022-11-25 15:29:46,481 INFO L137 encePairwiseOnDemand]: 425/434 looper letters, 186 selfloop transitions, 11 changer transitions 0/199 dead transitions. [2022-11-25 15:29:46,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 199 transitions, 962 flow [2022-11-25 15:29:46,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 15:29:46,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-25 15:29:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2236 transitions. [2022-11-25 15:29:46,489 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.46837033933808125 [2022-11-25 15:29:46,489 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2236 transitions. [2022-11-25 15:29:46,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2236 transitions. [2022-11-25 15:29:46,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:46,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2236 transitions. [2022-11-25 15:29:46,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 203.27272727272728) internal successors, (2236), 11 states have internal predecessors, (2236), 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) [2022-11-25 15:29:46,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 434.0) internal successors, (5208), 12 states have internal predecessors, (5208), 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) [2022-11-25 15:29:46,507 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 434.0) internal successors, (5208), 12 states have internal predecessors, (5208), 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) [2022-11-25 15:29:46,508 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 133 flow. Second operand 11 states and 2236 transitions. [2022-11-25 15:29:46,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 199 transitions, 962 flow [2022-11-25 15:29:46,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 199 transitions, 958 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:46,515 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 189 flow [2022-11-25 15:29:46,516 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=189, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2022-11-25 15:29:46,518 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 12 predicate places. [2022-11-25 15:29:46,518 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 189 flow [2022-11-25 15:29:46,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 188.0909090909091) internal successors, (2069), 11 states have internal predecessors, (2069), 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) [2022-11-25 15:29:46,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:46,520 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:46,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:46,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 15:29:46,728 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:46,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:46,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1743488283, now seen corresponding path program 1 times [2022-11-25 15:29:46,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:46,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233993669] [2022-11-25 15:29:46,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:46,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:46,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:46,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:46,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:46,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233993669] [2022-11-25 15:29:46,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233993669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:46,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:46,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:46,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690342951] [2022-11-25 15:29:46,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:46,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 15:29:46,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:46,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 15:29:46,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 15:29:46,854 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 434 [2022-11-25 15:29:46,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 200.5) internal successors, (802), 4 states have internal predecessors, (802), 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) [2022-11-25 15:29:46,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:46,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 434 [2022-11-25 15:29:46,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:48,532 INFO L130 PetriNetUnfolder]: 12555/17440 cut-off events. [2022-11-25 15:29:48,532 INFO L131 PetriNetUnfolder]: For 6138/6883 co-relation queries the response was YES. [2022-11-25 15:29:48,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43962 conditions, 17440 events. 12555/17440 cut-off events. For 6138/6883 co-relation queries the response was YES. Maximal size of possible extension queue 819. Compared 103759 event pairs, 3386 based on Foata normal form. 745/13009 useless extension candidates. Maximal degree in co-relation 43945. Up to 10544 conditions per place. [2022-11-25 15:29:48,602 INFO L137 encePairwiseOnDemand]: 430/434 looper letters, 62 selfloop transitions, 2 changer transitions 4/71 dead transitions. [2022-11-25 15:29:48,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 71 transitions, 418 flow [2022-11-25 15:29:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 15:29:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-25 15:29:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 845 transitions. [2022-11-25 15:29:48,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4867511520737327 [2022-11-25 15:29:48,609 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 845 transitions. [2022-11-25 15:29:48,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 845 transitions. [2022-11-25 15:29:48,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:48,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 845 transitions. [2022-11-25 15:29:48,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 211.25) internal successors, (845), 4 states have internal predecessors, (845), 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) [2022-11-25 15:29:48,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 434.0) internal successors, (2170), 5 states have internal predecessors, (2170), 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) [2022-11-25 15:29:48,616 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 434.0) internal successors, (2170), 5 states have internal predecessors, (2170), 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) [2022-11-25 15:29:48,616 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 189 flow. Second operand 4 states and 845 transitions. [2022-11-25 15:29:48,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 71 transitions, 418 flow [2022-11-25 15:29:48,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 71 transitions, 402 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-25 15:29:48,620 INFO L231 Difference]: Finished difference. Result has 60 places, 43 transitions, 171 flow [2022-11-25 15:29:48,621 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=171, PETRI_PLACES=60, PETRI_TRANSITIONS=43} [2022-11-25 15:29:48,621 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 10 predicate places. [2022-11-25 15:29:48,622 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 43 transitions, 171 flow [2022-11-25 15:29:48,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 200.5) internal successors, (802), 4 states have internal predecessors, (802), 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) [2022-11-25 15:29:48,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:48,622 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:48,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 15:29:48,623 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:48,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:48,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1750628538, now seen corresponding path program 1 times [2022-11-25 15:29:48,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:48,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171090734] [2022-11-25 15:29:48,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:48,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:48,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:48,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:48,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171090734] [2022-11-25 15:29:48,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171090734] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 15:29:48,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 15:29:48,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 15:29:48,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355627252] [2022-11-25 15:29:48,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 15:29:48,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 15:29:48,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:48,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 15:29:48,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 15:29:48,693 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 434 [2022-11-25 15:29:48,694 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 43 transitions, 171 flow. Second operand has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 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) [2022-11-25 15:29:48,694 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:48,694 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 434 [2022-11-25 15:29:48,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:49,848 INFO L130 PetriNetUnfolder]: 12536/16899 cut-off events. [2022-11-25 15:29:49,849 INFO L131 PetriNetUnfolder]: For 4115/4464 co-relation queries the response was YES. [2022-11-25 15:29:49,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41640 conditions, 16899 events. 12536/16899 cut-off events. For 4115/4464 co-relation queries the response was YES. Maximal size of possible extension queue 837. Compared 97424 event pairs, 554 based on Foata normal form. 349/11992 useless extension candidates. Maximal degree in co-relation 41622. Up to 15680 conditions per place. [2022-11-25 15:29:49,928 INFO L137 encePairwiseOnDemand]: 431/434 looper letters, 55 selfloop transitions, 1 changer transitions 0/59 dead transitions. [2022-11-25 15:29:49,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 342 flow [2022-11-25 15:29:49,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 15:29:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 15:29:49,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 642 transitions. [2022-11-25 15:29:49,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4930875576036866 [2022-11-25 15:29:49,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 642 transitions. [2022-11-25 15:29:49,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 642 transitions. [2022-11-25 15:29:49,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:49,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 642 transitions. [2022-11-25 15:29:49,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 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) [2022-11-25 15:29:49,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:49,934 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 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) [2022-11-25 15:29:49,934 INFO L175 Difference]: Start difference. First operand has 60 places, 43 transitions, 171 flow. Second operand 3 states and 642 transitions. [2022-11-25 15:29:49,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 342 flow [2022-11-25 15:29:49,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 15:29:49,937 INFO L231 Difference]: Finished difference. Result has 56 places, 41 transitions, 162 flow [2022-11-25 15:29:49,938 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=56, PETRI_TRANSITIONS=41} [2022-11-25 15:29:49,938 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 6 predicate places. [2022-11-25 15:29:49,938 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 41 transitions, 162 flow [2022-11-25 15:29:49,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 203.33333333333334) internal successors, (610), 3 states have internal predecessors, (610), 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) [2022-11-25 15:29:49,939 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:49,939 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 15:29:49,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 15:29:49,939 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:49,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1750628540, now seen corresponding path program 1 times [2022-11-25 15:29:49,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:49,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516314343] [2022-11-25 15:29:49,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:49,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:49,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516314343] [2022-11-25 15:29:49,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516314343] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059802048] [2022-11-25 15:29:49,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:49,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:49,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:49,992 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:50,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 15:29:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:50,098 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 15:29:50,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:50,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:50,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:50,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059802048] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:50,133 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:50,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-25 15:29:50,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311360190] [2022-11-25 15:29:50,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:50,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 15:29:50,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:50,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 15:29:50,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-25 15:29:50,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 434 [2022-11-25 15:29:50,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 41 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 201.42857142857142) internal successors, (1410), 7 states have internal predecessors, (1410), 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) [2022-11-25 15:29:50,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:50,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 434 [2022-11-25 15:29:50,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 15:29:52,704 INFO L130 PetriNetUnfolder]: 25315/33946 cut-off events. [2022-11-25 15:29:52,704 INFO L131 PetriNetUnfolder]: For 8874/9571 co-relation queries the response was YES. [2022-11-25 15:29:52,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82983 conditions, 33946 events. 25315/33946 cut-off events. For 8874/9571 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 200128 event pairs, 4212 based on Foata normal form. 1861/24965 useless extension candidates. Maximal degree in co-relation 82966. Up to 8755 conditions per place. [2022-11-25 15:29:52,915 INFO L137 encePairwiseOnDemand]: 429/434 looper letters, 122 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2022-11-25 15:29:52,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 131 transitions, 728 flow [2022-11-25 15:29:52,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 15:29:52,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 15:29:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1298 transitions. [2022-11-25 15:29:52,920 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49846390168970817 [2022-11-25 15:29:52,920 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1298 transitions. [2022-11-25 15:29:52,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1298 transitions. [2022-11-25 15:29:52,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 15:29:52,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1298 transitions. [2022-11-25 15:29:52,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 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) [2022-11-25 15:29:52,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 434.0) internal successors, (3038), 7 states have internal predecessors, (3038), 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) [2022-11-25 15:29:52,930 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 434.0) internal successors, (3038), 7 states have internal predecessors, (3038), 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) [2022-11-25 15:29:52,930 INFO L175 Difference]: Start difference. First operand has 56 places, 41 transitions, 162 flow. Second operand 6 states and 1298 transitions. [2022-11-25 15:29:52,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 131 transitions, 728 flow [2022-11-25 15:29:52,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 131 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 15:29:52,941 INFO L231 Difference]: Finished difference. Result has 64 places, 45 transitions, 213 flow [2022-11-25 15:29:52,941 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=434, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=213, PETRI_PLACES=64, PETRI_TRANSITIONS=45} [2022-11-25 15:29:52,942 INFO L288 CegarLoopForPetriNet]: 50 programPoint places, 14 predicate places. [2022-11-25 15:29:52,942 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 45 transitions, 213 flow [2022-11-25 15:29:52,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 201.42857142857142) internal successors, (1410), 7 states have internal predecessors, (1410), 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) [2022-11-25 15:29:52,943 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 15:29:52,943 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-11-25 15:29:52,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 15:29:53,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 15:29:53,147 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2022-11-25 15:29:53,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 15:29:53,148 INFO L85 PathProgramCache]: Analyzing trace with hash -153728023, now seen corresponding path program 2 times [2022-11-25 15:29:53,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 15:29:53,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825593641] [2022-11-25 15:29:53,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 15:29:53,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 15:29:53,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 15:29:53,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 15:29:53,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 15:29:53,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825593641] [2022-11-25 15:29:53,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825593641] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 15:29:53,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645847274] [2022-11-25 15:29:53,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 15:29:53,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 15:29:53,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 15:29:53,347 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 15:29:53,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1758fd06-32d2-4365-9a6c-edb12307ca8a/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 15:29:53,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-25 15:29:53,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 15:29:53,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 15:29:53,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 15:29:53,486 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 15:29:53,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 15:29:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-25 15:29:53,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645847274] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 15:29:53,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 15:29:53,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 2, 2] total 11 [2022-11-25 15:29:53,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618473470] [2022-11-25 15:29:53,529 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 15:29:53,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 15:29:53,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 15:29:53,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 15:29:53,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2022-11-25 15:29:53,823 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 434 [2022-11-25 15:29:53,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 45 transitions, 213 flow. Second operand has 12 states, 12 states have (on average 186.5) internal successors, (2238), 12 states have internal predecessors, (2238), 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) [2022-11-25 15:29:53,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 15:29:53,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 434 [2022-11-25 15:29:53,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand