./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca933e9c322081d61da01652cda9ceed61707699c680fd4ef3d92d3ccd39b362 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:15:40,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:15:40,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:15:41,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:15:41,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:15:41,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:15:41,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:15:41,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:15:41,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:15:41,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:15:41,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:15:41,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:15:41,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:15:41,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:15:41,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:15:41,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:15:41,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:15:41,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:15:41,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:15:41,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:15:41,061 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:15:41,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:15:41,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:15:41,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:15:41,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:15:41,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:15:41,077 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:15:41,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:15:41,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:15:41,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:15:41,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:15:41,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:15:41,085 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:15:41,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:15:41,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:15:41,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:15:41,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:15:41,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:15:41,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:15:41,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:15:41,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:15:41,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-20 12:15:41,136 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:15:41,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:15:41,139 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:15:41,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:15:41,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:15:41,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:15:41,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:15:41,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:15:41,144 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:15:41,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:15:41,146 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:15:41,146 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:15:41,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:15:41,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:15:41,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:15:41,147 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:15:41,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:15:41,148 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:15:41,148 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-20 12:15:41,149 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:15:41,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:15:41,149 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:15:41,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:15:41,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:15:41,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:15:41,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:15:41,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:15:41,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:15:41,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:15:41,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:15:41,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:15:41,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:15:41,153 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:15:41,153 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:15:41,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:15:41,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca933e9c322081d61da01652cda9ceed61707699c680fd4ef3d92d3ccd39b362 [2022-11-20 12:15:41,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:15:41,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:15:41,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:15:41,489 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:15:41,490 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:15:41,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/pthread/fib_safe-6.i [2022-11-20 12:15:44,470 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:15:44,791 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:15:44,792 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/sv-benchmarks/c/pthread/fib_safe-6.i [2022-11-20 12:15:44,805 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/data/ef6d16a73/339c2c63d42b4f359734efb30d05f29b/FLAG057f38cc0 [2022-11-20 12:15:44,819 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/data/ef6d16a73/339c2c63d42b4f359734efb30d05f29b [2022-11-20 12:15:44,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:15:44,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:15:44,825 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:15:44,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:15:44,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:15:44,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:15:44" (1/1) ... [2022-11-20 12:15:44,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a67e210 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:44, skipping insertion in model container [2022-11-20 12:15:44,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:15:44" (1/1) ... [2022-11-20 12:15:44,839 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:15:44,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:15:45,183 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_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/sv-benchmarks/c/pthread/fib_safe-6.i[30241,30254] [2022-11-20 12:15:45,213 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:15:45,227 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:15:45,281 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_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/sv-benchmarks/c/pthread/fib_safe-6.i[30241,30254] [2022-11-20 12:15:45,295 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:15:45,334 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:15:45,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45 WrapperNode [2022-11-20 12:15:45,335 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:15:45,336 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:15:45,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:15:45,337 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:15:45,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,372 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,404 INFO L138 Inliner]: procedures = 165, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2022-11-20 12:15:45,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:15:45,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:15:45,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:15:45,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:15:45,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,435 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,442 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:15:45,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:15:45,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:15:45,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:15:45,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (1/1) ... [2022-11-20 12:15:45,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:15:45,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:45,500 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:15:45,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:15:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-20 12:15:45,547 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-20 12:15:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-20 12:15:45,547 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-20 12:15:45,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:15:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 12:15:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:15:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:15:45,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:15:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:15:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 12:15:45,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:15:45,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:15:45,551 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 12:15:45,726 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:15:45,732 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:15:45,981 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:15:46,008 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:15:46,008 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-20 12:15:46,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:46 BoogieIcfgContainer [2022-11-20 12:15:46,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:15:46,016 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:15:46,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:15:46,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:15:46,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:15:44" (1/3) ... [2022-11-20 12:15:46,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160b0c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:15:46, skipping insertion in model container [2022-11-20 12:15:46,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:15:45" (2/3) ... [2022-11-20 12:15:46,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160b0c77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:15:46, skipping insertion in model container [2022-11-20 12:15:46,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:15:46" (3/3) ... [2022-11-20 12:15:46,028 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2022-11-20 12:15:46,036 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 12:15:46,045 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:15:46,045 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-20 12:15:46,045 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 12:15:46,128 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-20 12:15:46,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 120 transitions, 250 flow [2022-11-20 12:15:46,251 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2022-11-20 12:15:46,252 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:15:46,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 118 events. 7/118 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 137 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2022-11-20 12:15:46,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 120 transitions, 250 flow [2022-11-20 12:15:46,265 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 118 transitions, 242 flow [2022-11-20 12:15:46,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:15:46,283 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;@4e59e7ab, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:15:46,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-20 12:15:46,296 INFO L130 PetriNetUnfolder]: 1/40 cut-off events. [2022-11-20 12:15:46,296 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-20 12:15:46,296 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:46,297 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:46,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:46,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:46,303 INFO L85 PathProgramCache]: Analyzing trace with hash 112959114, now seen corresponding path program 1 times [2022-11-20 12:15:46,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:46,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417339972] [2022-11-20 12:15:46,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:46,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:46,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:46,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:46,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417339972] [2022-11-20 12:15:46,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417339972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:46,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:46,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:46,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973009637] [2022-11-20 12:15:46,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:46,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:46,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:46,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:46,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:46,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:15:46,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:46,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:46,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:15:46,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:47,026 INFO L130 PetriNetUnfolder]: 81/446 cut-off events. [2022-11-20 12:15:47,027 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-11-20 12:15:47,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 446 events. 81/446 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2407 event pairs, 33 based on Foata normal form. 57/372 useless extension candidates. Maximal degree in co-relation 544. Up to 81 conditions per place. [2022-11-20 12:15:47,035 INFO L137 encePairwiseOnDemand]: 108/120 looper letters, 19 selfloop transitions, 5 changer transitions 0/124 dead transitions. [2022-11-20 12:15:47,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 124 transitions, 305 flow [2022-11-20 12:15:47,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:15:47,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:15:47,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 448 transitions. [2022-11-20 12:15:47,050 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-11-20 12:15:47,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 448 transitions. [2022-11-20 12:15:47,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 448 transitions. [2022-11-20 12:15:47,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:47,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 448 transitions. [2022-11-20 12:15:47,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.0) internal successors, (448), 4 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:47,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:47,066 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:47,068 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 242 flow. Second operand 4 states and 448 transitions. [2022-11-20 12:15:47,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 124 transitions, 305 flow [2022-11-20 12:15:47,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 124 transitions, 302 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:15:47,076 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 261 flow [2022-11-20 12:15:47,079 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=261, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2022-11-20 12:15:47,082 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2022-11-20 12:15:47,083 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 261 flow [2022-11-20 12:15:47,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:47,083 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:47,084 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:47,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:15:47,084 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:47,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1179537421, now seen corresponding path program 1 times [2022-11-20 12:15:47,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:47,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756978691] [2022-11-20 12:15:47,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:47,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:47,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:47,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756978691] [2022-11-20 12:15:47,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756978691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:47,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:47,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:47,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310357595] [2022-11-20 12:15:47,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:47,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:47,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:47,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:47,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:15:47,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 261 flow. Second operand has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:47,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:47,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:15:47,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:47,518 INFO L130 PetriNetUnfolder]: 109/314 cut-off events. [2022-11-20 12:15:47,518 INFO L131 PetriNetUnfolder]: For 40/59 co-relation queries the response was YES. [2022-11-20 12:15:47,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 314 events. 109/314 cut-off events. For 40/59 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1518 event pairs, 13 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 620. Up to 109 conditions per place. [2022-11-20 12:15:47,533 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 32 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2022-11-20 12:15:47,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 132 transitions, 385 flow [2022-11-20 12:15:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:47,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 527 transitions. [2022-11-20 12:15:47,540 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8783333333333333 [2022-11-20 12:15:47,541 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 527 transitions. [2022-11-20 12:15:47,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 527 transitions. [2022-11-20 12:15:47,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:47,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 527 transitions. [2022-11-20 12:15:47,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:47,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:47,548 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:47,549 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 261 flow. Second operand 5 states and 527 transitions. [2022-11-20 12:15:47,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 132 transitions, 385 flow [2022-11-20 12:15:47,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 132 transitions, 385 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 12:15:47,557 INFO L231 Difference]: Finished difference. Result has 126 places, 119 transitions, 293 flow [2022-11-20 12:15:47,558 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=293, PETRI_PLACES=126, PETRI_TRANSITIONS=119} [2022-11-20 12:15:47,559 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 8 predicate places. [2022-11-20 12:15:47,559 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 119 transitions, 293 flow [2022-11-20 12:15:47,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.75) internal successors, (399), 4 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:47,560 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:47,561 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:47,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:15:47,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:47,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:47,565 INFO L85 PathProgramCache]: Analyzing trace with hash 652098173, now seen corresponding path program 1 times [2022-11-20 12:15:47,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:47,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926589030] [2022-11-20 12:15:47,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:47,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,780 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:47,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:47,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926589030] [2022-11-20 12:15:47,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926589030] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:47,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855883243] [2022-11-20 12:15:47,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:47,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:47,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:47,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:47,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:15:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:47,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:15:47,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:48,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:48,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:48,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855883243] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:48,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:15:48,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2022-11-20 12:15:48,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296636526] [2022-11-20 12:15:48,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:48,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:15:48,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:48,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:15:48,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:15:48,205 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:15:48,208 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 119 transitions, 293 flow. Second operand has 11 states, 11 states have (on average 103.54545454545455) internal successors, (1139), 11 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:48,208 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:48,208 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:15:48,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:48,782 INFO L130 PetriNetUnfolder]: 235/1253 cut-off events. [2022-11-20 12:15:48,782 INFO L131 PetriNetUnfolder]: For 156/169 co-relation queries the response was YES. [2022-11-20 12:15:48,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 1253 events. 235/1253 cut-off events. For 156/169 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9649 event pairs, 23 based on Foata normal form. 0/1019 useless extension candidates. Maximal degree in co-relation 2072. Up to 245 conditions per place. [2022-11-20 12:15:48,801 INFO L137 encePairwiseOnDemand]: 110/120 looper letters, 48 selfloop transitions, 41 changer transitions 0/192 dead transitions. [2022-11-20 12:15:48,802 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 192 transitions, 731 flow [2022-11-20 12:15:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:15:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-20 12:15:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1944 transitions. [2022-11-20 12:15:48,807 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9 [2022-11-20 12:15:48,807 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1944 transitions. [2022-11-20 12:15:48,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1944 transitions. [2022-11-20 12:15:48,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:48,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1944 transitions. [2022-11-20 12:15:48,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 108.0) internal successors, (1944), 18 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:48,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 120.0) internal successors, (2280), 19 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:48,820 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 120.0) internal successors, (2280), 19 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:48,820 INFO L175 Difference]: Start difference. First operand has 126 places, 119 transitions, 293 flow. Second operand 18 states and 1944 transitions. [2022-11-20 12:15:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 192 transitions, 731 flow [2022-11-20 12:15:48,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 192 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:15:48,826 INFO L231 Difference]: Finished difference. Result has 157 places, 160 transitions, 685 flow [2022-11-20 12:15:48,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=291, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=685, PETRI_PLACES=157, PETRI_TRANSITIONS=160} [2022-11-20 12:15:48,827 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 39 predicate places. [2022-11-20 12:15:48,828 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 160 transitions, 685 flow [2022-11-20 12:15:48,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 103.54545454545455) internal successors, (1139), 11 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:48,828 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:48,829 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:48,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:49,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-20 12:15:49,035 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:49,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:49,035 INFO L85 PathProgramCache]: Analyzing trace with hash 652098174, now seen corresponding path program 1 times [2022-11-20 12:15:49,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:49,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533824349] [2022-11-20 12:15:49,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:49,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:49,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:49,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:49,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533824349] [2022-11-20 12:15:49,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533824349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:49,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845323377] [2022-11-20 12:15:49,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:49,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:49,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:49,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:15:49,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:49,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:15:49,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:49,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:49,342 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:49,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845323377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:49,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:15:49,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2022-11-20 12:15:49,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761291461] [2022-11-20 12:15:49,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:49,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:15:49,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:49,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:15:49,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:15:49,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:15:49,355 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 160 transitions, 685 flow. Second operand has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:49,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:49,356 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:15:49,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:49,598 INFO L130 PetriNetUnfolder]: 113/831 cut-off events. [2022-11-20 12:15:49,599 INFO L131 PetriNetUnfolder]: For 2930/2991 co-relation queries the response was YES. [2022-11-20 12:15:49,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 831 events. 113/831 cut-off events. For 2930/2991 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5767 event pairs, 28 based on Foata normal form. 91/812 useless extension candidates. Maximal degree in co-relation 1826. Up to 99 conditions per place. [2022-11-20 12:15:49,615 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 23 selfloop transitions, 14 changer transitions 0/140 dead transitions. [2022-11-20 12:15:49,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 140 transitions, 618 flow [2022-11-20 12:15:49,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:49,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 531 transitions. [2022-11-20 12:15:49,618 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.885 [2022-11-20 12:15:49,618 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 531 transitions. [2022-11-20 12:15:49,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 531 transitions. [2022-11-20 12:15:49,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:49,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 531 transitions. [2022-11-20 12:15:49,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.2) internal successors, (531), 5 states have internal predecessors, (531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:49,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:49,622 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:49,622 INFO L175 Difference]: Start difference. First operand has 157 places, 160 transitions, 685 flow. Second operand 5 states and 531 transitions. [2022-11-20 12:15:49,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 140 transitions, 618 flow [2022-11-20 12:15:49,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 140 transitions, 533 flow, removed 25 selfloop flow, removed 14 redundant places. [2022-11-20 12:15:49,639 INFO L231 Difference]: Finished difference. Result has 143 places, 136 transitions, 478 flow [2022-11-20 12:15:49,639 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=143, PETRI_TRANSITIONS=136} [2022-11-20 12:15:49,641 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 25 predicate places. [2022-11-20 12:15:49,642 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 136 transitions, 478 flow [2022-11-20 12:15:49,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:49,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:49,643 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:49,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:49,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:49,848 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:49,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:49,849 INFO L85 PathProgramCache]: Analyzing trace with hash -82011894, now seen corresponding path program 1 times [2022-11-20 12:15:49,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:49,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848335372] [2022-11-20 12:15:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:49,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:49,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:49,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848335372] [2022-11-20 12:15:49,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848335372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:49,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:49,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:49,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989206931] [2022-11-20 12:15:49,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:49,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:49,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:49,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:49,911 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:15:49,912 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 136 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:49,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:49,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:15:49,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:50,112 INFO L130 PetriNetUnfolder]: 168/711 cut-off events. [2022-11-20 12:15:50,112 INFO L131 PetriNetUnfolder]: For 1690/1794 co-relation queries the response was YES. [2022-11-20 12:15:50,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 711 events. 168/711 cut-off events. For 1690/1794 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4448 event pairs, 36 based on Foata normal form. 18/664 useless extension candidates. Maximal degree in co-relation 1965. Up to 197 conditions per place. [2022-11-20 12:15:50,136 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 62 selfloop transitions, 4 changer transitions 0/165 dead transitions. [2022-11-20 12:15:50,136 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 165 transitions, 797 flow [2022-11-20 12:15:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 518 transitions. [2022-11-20 12:15:50,138 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8633333333333333 [2022-11-20 12:15:50,138 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 518 transitions. [2022-11-20 12:15:50,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 518 transitions. [2022-11-20 12:15:50,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:50,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 518 transitions. [2022-11-20 12:15:50,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.6) internal successors, (518), 5 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:50,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:50,179 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:50,179 INFO L175 Difference]: Start difference. First operand has 143 places, 136 transitions, 478 flow. Second operand 5 states and 518 transitions. [2022-11-20 12:15:50,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 165 transitions, 797 flow [2022-11-20 12:15:50,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 165 transitions, 794 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-20 12:15:50,187 INFO L231 Difference]: Finished difference. Result has 148 places, 139 transitions, 507 flow [2022-11-20 12:15:50,187 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=507, PETRI_PLACES=148, PETRI_TRANSITIONS=139} [2022-11-20 12:15:50,188 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 30 predicate places. [2022-11-20 12:15:50,188 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 139 transitions, 507 flow [2022-11-20 12:15:50,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.0) internal successors, (400), 4 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:50,188 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:50,188 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:50,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:15:50,189 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:50,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:50,189 INFO L85 PathProgramCache]: Analyzing trace with hash -398869696, now seen corresponding path program 1 times [2022-11-20 12:15:50,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:50,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889435733] [2022-11-20 12:15:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:50,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:50,236 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:50,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:50,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889435733] [2022-11-20 12:15:50,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889435733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:50,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:50,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:50,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15543047] [2022-11-20 12:15:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:50,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:50,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:50,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:50,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:50,239 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:15:50,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 139 transitions, 507 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:50,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:50,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:15:50,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:50,416 INFO L130 PetriNetUnfolder]: 184/634 cut-off events. [2022-11-20 12:15:50,416 INFO L131 PetriNetUnfolder]: For 1633/1770 co-relation queries the response was YES. [2022-11-20 12:15:50,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2060 conditions, 634 events. 184/634 cut-off events. For 1633/1770 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4045 event pairs, 26 based on Foata normal form. 33/617 useless extension candidates. Maximal degree in co-relation 2000. Up to 138 conditions per place. [2022-11-20 12:15:50,438 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 59 selfloop transitions, 8 changer transitions 0/166 dead transitions. [2022-11-20 12:15:50,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 166 transitions, 855 flow [2022-11-20 12:15:50,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:50,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:50,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 512 transitions. [2022-11-20 12:15:50,440 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8533333333333334 [2022-11-20 12:15:50,442 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 512 transitions. [2022-11-20 12:15:50,443 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 512 transitions. [2022-11-20 12:15:50,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:50,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 512 transitions. [2022-11-20 12:15:50,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:50,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:50,446 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:50,446 INFO L175 Difference]: Start difference. First operand has 148 places, 139 transitions, 507 flow. Second operand 5 states and 512 transitions. [2022-11-20 12:15:50,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 166 transitions, 855 flow [2022-11-20 12:15:50,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 166 transitions, 853 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:15:50,455 INFO L231 Difference]: Finished difference. Result has 151 places, 139 transitions, 525 flow [2022-11-20 12:15:50,455 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=525, PETRI_PLACES=151, PETRI_TRANSITIONS=139} [2022-11-20 12:15:50,458 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 33 predicate places. [2022-11-20 12:15:50,458 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 139 transitions, 525 flow [2022-11-20 12:15:50,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:50,459 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:50,459 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:50,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:15:50,460 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:50,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:50,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1768695099, now seen corresponding path program 1 times [2022-11-20 12:15:50,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:50,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227707332] [2022-11-20 12:15:50,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:50,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:50,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:50,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:50,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:50,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227707332] [2022-11-20 12:15:50,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227707332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:50,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:50,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:50,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995902276] [2022-11-20 12:15:50,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:50,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:50,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:50,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:50,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:50,582 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 120 [2022-11-20 12:15:50,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 139 transitions, 525 flow. Second operand has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:50,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:50,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 120 [2022-11-20 12:15:50,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:51,081 INFO L130 PetriNetUnfolder]: 713/2625 cut-off events. [2022-11-20 12:15:51,082 INFO L131 PetriNetUnfolder]: For 5825/6193 co-relation queries the response was YES. [2022-11-20 12:15:51,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 2625 events. 713/2625 cut-off events. For 5825/6193 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 22638 event pairs, 104 based on Foata normal form. 36/2406 useless extension candidates. Maximal degree in co-relation 7202. Up to 593 conditions per place. [2022-11-20 12:15:51,129 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 86 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-11-20 12:15:51,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 193 transitions, 1085 flow [2022-11-20 12:15:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:15:51,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:15:51,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 422 transitions. [2022-11-20 12:15:51,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8791666666666667 [2022-11-20 12:15:51,131 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 422 transitions. [2022-11-20 12:15:51,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 422 transitions. [2022-11-20 12:15:51,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:51,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 422 transitions. [2022-11-20 12:15:51,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 105.5) internal successors, (422), 4 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,134 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,135 INFO L175 Difference]: Start difference. First operand has 151 places, 139 transitions, 525 flow. Second operand 4 states and 422 transitions. [2022-11-20 12:15:51,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 193 transitions, 1085 flow [2022-11-20 12:15:51,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 193 transitions, 1073 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:15:51,146 INFO L231 Difference]: Finished difference. Result has 153 places, 141 transitions, 539 flow [2022-11-20 12:15:51,147 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=539, PETRI_PLACES=153, PETRI_TRANSITIONS=141} [2022-11-20 12:15:51,147 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 35 predicate places. [2022-11-20 12:15:51,148 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 141 transitions, 539 flow [2022-11-20 12:15:51,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.25) internal successors, (401), 4 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:51,148 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:51,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:15:51,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:51,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:51,149 INFO L85 PathProgramCache]: Analyzing trace with hash 519941638, now seen corresponding path program 1 times [2022-11-20 12:15:51,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:51,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436569772] [2022-11-20 12:15:51,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:51,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:51,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:51,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436569772] [2022-11-20 12:15:51,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436569772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:51,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744509378] [2022-11-20 12:15:51,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:51,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:51,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:51,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:51,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:15:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:51,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:15:51,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:51,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:51,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744509378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:51,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:15:51,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-20 12:15:51,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384841865] [2022-11-20 12:15:51,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:51,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:15:51,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:51,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:15:51,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:15:51,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:15:51,417 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 141 transitions, 539 flow. Second operand has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:51,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:15:51,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:51,705 INFO L130 PetriNetUnfolder]: 180/725 cut-off events. [2022-11-20 12:15:51,705 INFO L131 PetriNetUnfolder]: For 1792/1908 co-relation queries the response was YES. [2022-11-20 12:15:51,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 725 events. 180/725 cut-off events. For 1792/1908 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4811 event pairs, 30 based on Foata normal form. 23/700 useless extension candidates. Maximal degree in co-relation 2181. Up to 136 conditions per place. [2022-11-20 12:15:51,737 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 62 selfloop transitions, 6 changer transitions 0/169 dead transitions. [2022-11-20 12:15:51,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 169 transitions, 883 flow [2022-11-20 12:15:51,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:15:51,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 12:15:51,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 715 transitions. [2022-11-20 12:15:51,739 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8511904761904762 [2022-11-20 12:15:51,739 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 715 transitions. [2022-11-20 12:15:51,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 715 transitions. [2022-11-20 12:15:51,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:51,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 715 transitions. [2022-11-20 12:15:51,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.14285714285714) internal successors, (715), 7 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,744 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 120.0) internal successors, (960), 8 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,744 INFO L175 Difference]: Start difference. First operand has 153 places, 141 transitions, 539 flow. Second operand 7 states and 715 transitions. [2022-11-20 12:15:51,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 169 transitions, 883 flow [2022-11-20 12:15:51,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 169 transitions, 881 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:15:51,753 INFO L231 Difference]: Finished difference. Result has 157 places, 140 transitions, 545 flow [2022-11-20 12:15:51,753 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=533, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=545, PETRI_PLACES=157, PETRI_TRANSITIONS=140} [2022-11-20 12:15:51,754 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 39 predicate places. [2022-11-20 12:15:51,754 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 140 transitions, 545 flow [2022-11-20 12:15:51,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:51,754 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:51,755 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:51,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:51,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:51,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:51,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:51,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1863821652, now seen corresponding path program 1 times [2022-11-20 12:15:51,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:51,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998539835] [2022-11-20 12:15:51,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:51,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:51,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:52,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:52,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:52,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998539835] [2022-11-20 12:15:52,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998539835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:52,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:52,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:52,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237991607] [2022-11-20 12:15:52,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:52,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:52,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:52,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:52,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:52,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:15:52,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 140 transitions, 545 flow. Second operand has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:52,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:52,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:15:52,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:52,233 INFO L130 PetriNetUnfolder]: 155/639 cut-off events. [2022-11-20 12:15:52,234 INFO L131 PetriNetUnfolder]: For 1661/1773 co-relation queries the response was YES. [2022-11-20 12:15:52,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1994 conditions, 639 events. 155/639 cut-off events. For 1661/1773 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3865 event pairs, 25 based on Foata normal form. 31/638 useless extension candidates. Maximal degree in co-relation 1926. Up to 133 conditions per place. [2022-11-20 12:15:52,262 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 59 selfloop transitions, 8 changer transitions 0/167 dead transitions. [2022-11-20 12:15:52,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 167 transitions, 884 flow [2022-11-20 12:15:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 509 transitions. [2022-11-20 12:15:52,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8483333333333334 [2022-11-20 12:15:52,264 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 509 transitions. [2022-11-20 12:15:52,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 509 transitions. [2022-11-20 12:15:52,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:52,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 509 transitions. [2022-11-20 12:15:52,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:52,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:52,267 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:52,267 INFO L175 Difference]: Start difference. First operand has 157 places, 140 transitions, 545 flow. Second operand 5 states and 509 transitions. [2022-11-20 12:15:52,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 167 transitions, 884 flow [2022-11-20 12:15:52,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 167 transitions, 873 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-20 12:15:52,276 INFO L231 Difference]: Finished difference. Result has 156 places, 140 transitions, 554 flow [2022-11-20 12:15:52,276 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=554, PETRI_PLACES=156, PETRI_TRANSITIONS=140} [2022-11-20 12:15:52,277 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 38 predicate places. [2022-11-20 12:15:52,277 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 140 transitions, 554 flow [2022-11-20 12:15:52,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:52,277 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:52,278 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:52,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:15:52,278 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:52,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:52,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1943896707, now seen corresponding path program 1 times [2022-11-20 12:15:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:52,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062538960] [2022-11-20 12:15:52,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:52,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:52,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:52,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062538960] [2022-11-20 12:15:52,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062538960] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:52,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748769722] [2022-11-20 12:15:52,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:52,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:52,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:52,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:52,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:15:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:52,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:15:52,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:52,501 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:52,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:52,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748769722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:52,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:15:52,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 12:15:52,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812880790] [2022-11-20 12:15:52,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:52,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:15:52,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:52,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:15:52,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:15:52,504 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:15:52,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 140 transitions, 554 flow. Second operand has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:52,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:52,505 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:15:52,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:52,714 INFO L130 PetriNetUnfolder]: 148/585 cut-off events. [2022-11-20 12:15:52,714 INFO L131 PetriNetUnfolder]: For 1504/1605 co-relation queries the response was YES. [2022-11-20 12:15:52,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1887 conditions, 585 events. 148/585 cut-off events. For 1504/1605 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3325 event pairs, 29 based on Foata normal form. 23/572 useless extension candidates. Maximal degree in co-relation 1819. Up to 150 conditions per place. [2022-11-20 12:15:52,739 INFO L137 encePairwiseOnDemand]: 116/120 looper letters, 43 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2022-11-20 12:15:52,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 148 transitions, 715 flow [2022-11-20 12:15:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:15:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:15:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 407 transitions. [2022-11-20 12:15:52,741 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8479166666666667 [2022-11-20 12:15:52,741 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 407 transitions. [2022-11-20 12:15:52,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 407 transitions. [2022-11-20 12:15:52,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:52,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 407 transitions. [2022-11-20 12:15:52,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.75) internal successors, (407), 4 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:52,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:52,744 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:52,744 INFO L175 Difference]: Start difference. First operand has 156 places, 140 transitions, 554 flow. Second operand 4 states and 407 transitions. [2022-11-20 12:15:52,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 148 transitions, 715 flow [2022-11-20 12:15:52,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 148 transitions, 703 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:15:52,753 INFO L231 Difference]: Finished difference. Result has 155 places, 139 transitions, 548 flow [2022-11-20 12:15:52,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=548, PETRI_PLACES=155, PETRI_TRANSITIONS=139} [2022-11-20 12:15:52,755 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 37 predicate places. [2022-11-20 12:15:52,755 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 139 transitions, 548 flow [2022-11-20 12:15:52,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:52,756 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:52,757 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:52,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:52,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:15:52,963 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:52,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:52,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1261891889, now seen corresponding path program 1 times [2022-11-20 12:15:52,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:52,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491562960] [2022-11-20 12:15:52,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:52,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:53,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:53,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:53,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491562960] [2022-11-20 12:15:53,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491562960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:53,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:53,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:53,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045431645] [2022-11-20 12:15:53,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:53,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:53,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:53,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:53,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:53,049 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-20 12:15:53,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 139 transitions, 548 flow. Second operand has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:53,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:53,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-20 12:15:53,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:53,605 INFO L130 PetriNetUnfolder]: 844/2627 cut-off events. [2022-11-20 12:15:53,605 INFO L131 PetriNetUnfolder]: For 6060/6426 co-relation queries the response was YES. [2022-11-20 12:15:53,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7703 conditions, 2627 events. 844/2627 cut-off events. For 6060/6426 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 21451 event pairs, 86 based on Foata normal form. 12/2393 useless extension candidates. Maximal degree in co-relation 7634. Up to 664 conditions per place. [2022-11-20 12:15:53,640 INFO L137 encePairwiseOnDemand]: 113/120 looper letters, 112 selfloop transitions, 4 changer transitions 0/217 dead transitions. [2022-11-20 12:15:53,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 217 transitions, 1344 flow [2022-11-20 12:15:53,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:15:53,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:15:53,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 516 transitions. [2022-11-20 12:15:53,642 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.86 [2022-11-20 12:15:53,642 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 516 transitions. [2022-11-20 12:15:53,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 516 transitions. [2022-11-20 12:15:53,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:53,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 516 transitions. [2022-11-20 12:15:53,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:53,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:53,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:53,646 INFO L175 Difference]: Start difference. First operand has 155 places, 139 transitions, 548 flow. Second operand 5 states and 516 transitions. [2022-11-20 12:15:53,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 217 transitions, 1344 flow [2022-11-20 12:15:53,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 217 transitions, 1334 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 12:15:53,656 INFO L231 Difference]: Finished difference. Result has 159 places, 142 transitions, 570 flow [2022-11-20 12:15:53,656 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=570, PETRI_PLACES=159, PETRI_TRANSITIONS=142} [2022-11-20 12:15:53,657 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 41 predicate places. [2022-11-20 12:15:53,657 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 142 transitions, 570 flow [2022-11-20 12:15:53,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.0) internal successors, (396), 4 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:53,657 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:53,657 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:53,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:15:53,658 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:53,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash 831417940, now seen corresponding path program 1 times [2022-11-20 12:15:53,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:53,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151132491] [2022-11-20 12:15:53,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:53,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:53,795 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:53,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:53,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151132491] [2022-11-20 12:15:53,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151132491] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:53,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175132187] [2022-11-20 12:15:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:53,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:53,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:53,811 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:53,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:15:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:53,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:15:53,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:54,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:54,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:54,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175132187] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:54,283 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:15:54,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-20 12:15:54,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317607659] [2022-11-20 12:15:54,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:54,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:15:54,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:54,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:15:54,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:15:54,290 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:15:54,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 142 transitions, 570 flow. Second operand has 17 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:54,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:54,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:15:54,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:55,440 INFO L130 PetriNetUnfolder]: 1218/4514 cut-off events. [2022-11-20 12:15:55,440 INFO L131 PetriNetUnfolder]: For 7970/8507 co-relation queries the response was YES. [2022-11-20 12:15:55,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11735 conditions, 4514 events. 1218/4514 cut-off events. For 7970/8507 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 42178 event pairs, 80 based on Foata normal form. 78/4332 useless extension candidates. Maximal degree in co-relation 11661. Up to 690 conditions per place. [2022-11-20 12:15:55,501 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 211 selfloop transitions, 11 changer transitions 0/325 dead transitions. [2022-11-20 12:15:55,501 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 325 transitions, 2340 flow [2022-11-20 12:15:55,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:15:55,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 12:15:55,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1126 transitions. [2022-11-20 12:15:55,505 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.853030303030303 [2022-11-20 12:15:55,505 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1126 transitions. [2022-11-20 12:15:55,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1126 transitions. [2022-11-20 12:15:55,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:55,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1126 transitions. [2022-11-20 12:15:55,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 102.36363636363636) internal successors, (1126), 11 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:55,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:55,512 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 120.0) internal successors, (1440), 12 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:55,513 INFO L175 Difference]: Start difference. First operand has 159 places, 142 transitions, 570 flow. Second operand 11 states and 1126 transitions. [2022-11-20 12:15:55,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 325 transitions, 2340 flow [2022-11-20 12:15:55,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 325 transitions, 2338 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-20 12:15:55,529 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 625 flow [2022-11-20 12:15:55,529 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=625, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2022-11-20 12:15:55,532 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 54 predicate places. [2022-11-20 12:15:55,532 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 625 flow [2022-11-20 12:15:55,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:55,533 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:55,533 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:55,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:55,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:15:55,740 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:55,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:55,740 INFO L85 PathProgramCache]: Analyzing trace with hash 4152592, now seen corresponding path program 1 times [2022-11-20 12:15:55,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:55,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415470586] [2022-11-20 12:15:55,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:55,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:55,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:55,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:55,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415470586] [2022-11-20 12:15:55,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415470586] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:55,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309886447] [2022-11-20 12:15:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:55,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:55,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:55,882 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:55,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:15:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:55,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:15:55,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:56,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:56,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:15:56,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309886447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:56,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:15:56,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2022-11-20 12:15:56,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422446382] [2022-11-20 12:15:56,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:56,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:15:56,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:56,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:15:56,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:15:56,188 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:15:56,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 147 transitions, 625 flow. Second operand has 7 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:56,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:56,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:15:56,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:57,341 INFO L130 PetriNetUnfolder]: 1071/4238 cut-off events. [2022-11-20 12:15:57,342 INFO L131 PetriNetUnfolder]: For 7379/7850 co-relation queries the response was YES. [2022-11-20 12:15:57,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11095 conditions, 4238 events. 1071/4238 cut-off events. For 7379/7850 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 39183 event pairs, 56 based on Foata normal form. 100/4093 useless extension candidates. Maximal degree in co-relation 11014. Up to 1302 conditions per place. [2022-11-20 12:15:57,402 INFO L137 encePairwiseOnDemand]: 115/120 looper letters, 90 selfloop transitions, 4 changer transitions 0/197 dead transitions. [2022-11-20 12:15:57,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 197 transitions, 1189 flow [2022-11-20 12:15:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:15:57,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-20 12:15:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 611 transitions. [2022-11-20 12:15:57,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8486111111111111 [2022-11-20 12:15:57,405 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 611 transitions. [2022-11-20 12:15:57,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 611 transitions. [2022-11-20 12:15:57,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:57,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 611 transitions. [2022-11-20 12:15:57,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 101.83333333333333) internal successors, (611), 6 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:57,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:57,409 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 120.0) internal successors, (840), 7 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:57,409 INFO L175 Difference]: Start difference. First operand has 172 places, 147 transitions, 625 flow. Second operand 6 states and 611 transitions. [2022-11-20 12:15:57,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 197 transitions, 1189 flow [2022-11-20 12:15:57,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 197 transitions, 1173 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-11-20 12:15:57,423 INFO L231 Difference]: Finished difference. Result has 173 places, 147 transitions, 623 flow [2022-11-20 12:15:57,423 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=173, PETRI_TRANSITIONS=147} [2022-11-20 12:15:57,424 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 55 predicate places. [2022-11-20 12:15:57,424 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 147 transitions, 623 flow [2022-11-20 12:15:57,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.71428571428571) internal successors, (698), 7 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:57,424 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:57,425 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:57,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:57,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:15:57,630 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:57,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash -866080606, now seen corresponding path program 1 times [2022-11-20 12:15:57,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:57,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790777094] [2022-11-20 12:15:57,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:57,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:57,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:57,752 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:57,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:57,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790777094] [2022-11-20 12:15:57,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790777094] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:15:57,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969385514] [2022-11-20 12:15:57,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:57,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:57,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:15:57,757 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:15:57,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:15:57,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:57,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:15:57,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:15:58,048 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:58,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:15:58,168 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:15:58,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969385514] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:15:58,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:15:58,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2022-11-20 12:15:58,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250137601] [2022-11-20 12:15:58,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:15:58,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 12:15:58,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:58,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 12:15:58,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:15:58,172 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:15:58,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 147 transitions, 623 flow. Second operand has 17 states, 17 states have (on average 103.52941176470588) internal successors, (1760), 17 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:58,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:58,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:15:58,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:15:59,467 INFO L130 PetriNetUnfolder]: 559/2830 cut-off events. [2022-11-20 12:15:59,467 INFO L131 PetriNetUnfolder]: For 12042/12379 co-relation queries the response was YES. [2022-11-20 12:15:59,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7835 conditions, 2830 events. 559/2830 cut-off events. For 12042/12379 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26979 event pairs, 28 based on Foata normal form. 286/2964 useless extension candidates. Maximal degree in co-relation 7753. Up to 368 conditions per place. [2022-11-20 12:15:59,539 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 50 selfloop transitions, 58 changer transitions 0/222 dead transitions. [2022-11-20 12:15:59,539 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 222 transitions, 1347 flow [2022-11-20 12:15:59,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:15:59,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-20 12:15:59,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2871 transitions. [2022-11-20 12:15:59,550 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8861111111111111 [2022-11-20 12:15:59,550 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2871 transitions. [2022-11-20 12:15:59,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2871 transitions. [2022-11-20 12:15:59,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:15:59,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2871 transitions. [2022-11-20 12:15:59,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 106.33333333333333) internal successors, (2871), 27 states have internal predecessors, (2871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:59,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 120.0) internal successors, (3360), 28 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:59,572 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 120.0) internal successors, (3360), 28 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:59,572 INFO L175 Difference]: Start difference. First operand has 173 places, 147 transitions, 623 flow. Second operand 27 states and 2871 transitions. [2022-11-20 12:15:59,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 222 transitions, 1347 flow [2022-11-20 12:15:59,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 222 transitions, 1338 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-20 12:15:59,595 INFO L231 Difference]: Finished difference. Result has 209 places, 183 transitions, 1156 flow [2022-11-20 12:15:59,595 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1156, PETRI_PLACES=209, PETRI_TRANSITIONS=183} [2022-11-20 12:15:59,596 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 91 predicate places. [2022-11-20 12:15:59,596 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 183 transitions, 1156 flow [2022-11-20 12:15:59,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 103.52941176470588) internal successors, (1760), 17 states have internal predecessors, (1760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:59,597 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:15:59,598 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:15:59,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:15:59,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:15:59,804 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:15:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:15:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash 751591720, now seen corresponding path program 1 times [2022-11-20 12:15:59,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:15:59,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632939739] [2022-11-20 12:15:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:15:59,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:15:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:15:59,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:15:59,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:15:59,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632939739] [2022-11-20 12:15:59,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632939739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:15:59,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:15:59,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:15:59,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852853646] [2022-11-20 12:15:59,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:15:59,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:15:59,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:15:59,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:15:59,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:15:59,873 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-20 12:15:59,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 183 transitions, 1156 flow. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:15:59,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:15:59,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-20 12:15:59,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:02,328 INFO L130 PetriNetUnfolder]: 2877/10782 cut-off events. [2022-11-20 12:16:02,328 INFO L131 PetriNetUnfolder]: For 66444/68147 co-relation queries the response was YES. [2022-11-20 12:16:02,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35965 conditions, 10782 events. 2877/10782 cut-off events. For 66444/68147 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 118481 event pairs, 378 based on Foata normal form. 134/10498 useless extension candidates. Maximal degree in co-relation 35871. Up to 2014 conditions per place. [2022-11-20 12:16:02,496 INFO L137 encePairwiseOnDemand]: 114/120 looper letters, 241 selfloop transitions, 8 changer transitions 0/357 dead transitions. [2022-11-20 12:16:02,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 357 transitions, 3530 flow [2022-11-20 12:16:02,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:16:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-20 12:16:02,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2022-11-20 12:16:02,499 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466666666666667 [2022-11-20 12:16:02,499 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2022-11-20 12:16:02,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2022-11-20 12:16:02,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:02,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2022-11-20 12:16:02,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:02,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:02,503 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:02,503 INFO L175 Difference]: Start difference. First operand has 209 places, 183 transitions, 1156 flow. Second operand 5 states and 508 transitions. [2022-11-20 12:16:02,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 357 transitions, 3530 flow [2022-11-20 12:16:02,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 357 transitions, 3083 flow, removed 184 selfloop flow, removed 8 redundant places. [2022-11-20 12:16:02,639 INFO L231 Difference]: Finished difference. Result has 205 places, 183 transitions, 1035 flow [2022-11-20 12:16:02,640 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1011, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1035, PETRI_PLACES=205, PETRI_TRANSITIONS=183} [2022-11-20 12:16:02,642 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 87 predicate places. [2022-11-20 12:16:02,642 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 183 transitions, 1035 flow [2022-11-20 12:16:02,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:02,658 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:02,659 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:02,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:16:02,659 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:16:02,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:02,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1824507043, now seen corresponding path program 1 times [2022-11-20 12:16:02,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:02,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986793401] [2022-11-20 12:16:02,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:02,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:02,904 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:02,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:02,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986793401] [2022-11-20 12:16:02,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986793401] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:16:02,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989614033] [2022-11-20 12:16:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:02,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:02,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:02,907 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:02,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:16:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:02,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:16:02,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:03,043 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:03,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:16:03,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989614033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:16:03,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:16:03,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-20 12:16:03,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96441114] [2022-11-20 12:16:03,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:16:03,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:16:03,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:03,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:16:03,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:16:03,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 120 [2022-11-20 12:16:03,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 183 transitions, 1035 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:03,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:03,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 120 [2022-11-20 12:16:03,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:05,029 INFO L130 PetriNetUnfolder]: 2705/10078 cut-off events. [2022-11-20 12:16:05,029 INFO L131 PetriNetUnfolder]: For 69078/70200 co-relation queries the response was YES. [2022-11-20 12:16:05,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34798 conditions, 10078 events. 2705/10078 cut-off events. For 69078/70200 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 109601 event pairs, 715 based on Foata normal form. 134/9852 useless extension candidates. Maximal degree in co-relation 34705. Up to 1966 conditions per place. [2022-11-20 12:16:05,174 INFO L137 encePairwiseOnDemand]: 116/120 looper letters, 127 selfloop transitions, 5 changer transitions 0/240 dead transitions. [2022-11-20 12:16:05,175 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 240 transitions, 1819 flow [2022-11-20 12:16:05,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:16:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 12:16:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2022-11-20 12:16:05,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.84375 [2022-11-20 12:16:05,177 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2022-11-20 12:16:05,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2022-11-20 12:16:05,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:05,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2022-11-20 12:16:05,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:05,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:05,179 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:05,180 INFO L175 Difference]: Start difference. First operand has 205 places, 183 transitions, 1035 flow. Second operand 4 states and 405 transitions. [2022-11-20 12:16:05,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 240 transitions, 1819 flow [2022-11-20 12:16:05,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 240 transitions, 1797 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-11-20 12:16:05,284 INFO L231 Difference]: Finished difference. Result has 203 places, 182 transitions, 1022 flow [2022-11-20 12:16:05,284 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=1012, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1022, PETRI_PLACES=203, PETRI_TRANSITIONS=182} [2022-11-20 12:16:05,285 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 85 predicate places. [2022-11-20 12:16:05,285 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 182 transitions, 1022 flow [2022-11-20 12:16:05,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:05,285 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:05,286 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:05,308 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:05,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:16:05,504 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:16:05,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:05,504 INFO L85 PathProgramCache]: Analyzing trace with hash 956941888, now seen corresponding path program 1 times [2022-11-20 12:16:05,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:05,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225861700] [2022-11-20 12:16:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:05,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:05,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:05,895 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:05,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:05,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225861700] [2022-11-20 12:16:05,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225861700] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:16:05,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907939452] [2022-11-20 12:16:05,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:05,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:05,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:05,913 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:05,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:16:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:06,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 12:16:06,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:06,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:06,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:06,507 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:06,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907939452] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:06,508 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:16:06,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-11-20 12:16:06,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767909391] [2022-11-20 12:16:06,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:06,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-20 12:16:06,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:06,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-20 12:16:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:16:06,512 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:16:06,514 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 182 transitions, 1022 flow. Second operand has 23 states, 23 states have (on average 103.3913043478261) internal successors, (2378), 23 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:06,514 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:06,515 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:16:06,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:09,658 INFO L130 PetriNetUnfolder]: 1044/6317 cut-off events. [2022-11-20 12:16:09,658 INFO L131 PetriNetUnfolder]: For 102376/102929 co-relation queries the response was YES. [2022-11-20 12:16:09,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18345 conditions, 6317 events. 1044/6317 cut-off events. For 102376/102929 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 73063 event pairs, 32 based on Foata normal form. 618/6612 useless extension candidates. Maximal degree in co-relation 18249. Up to 628 conditions per place. [2022-11-20 12:16:09,750 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 68 selfloop transitions, 157 changer transitions 0/338 dead transitions. [2022-11-20 12:16:09,751 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 338 transitions, 2798 flow [2022-11-20 12:16:09,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-20 12:16:09,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-11-20 12:16:09,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4778 transitions. [2022-11-20 12:16:09,759 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8848148148148148 [2022-11-20 12:16:09,759 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4778 transitions. [2022-11-20 12:16:09,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4778 transitions. [2022-11-20 12:16:09,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:09,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4778 transitions. [2022-11-20 12:16:09,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 106.17777777777778) internal successors, (4778), 45 states have internal predecessors, (4778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:09,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 120.0) internal successors, (5520), 46 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:09,780 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 120.0) internal successors, (5520), 46 states have internal predecessors, (5520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:09,780 INFO L175 Difference]: Start difference. First operand has 203 places, 182 transitions, 1022 flow. Second operand 45 states and 4778 transitions. [2022-11-20 12:16:09,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 338 transitions, 2798 flow [2022-11-20 12:16:09,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 338 transitions, 2760 flow, removed 14 selfloop flow, removed 4 redundant places. [2022-11-20 12:16:09,847 INFO L231 Difference]: Finished difference. Result has 262 places, 285 transitions, 2583 flow [2022-11-20 12:16:09,847 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2583, PETRI_PLACES=262, PETRI_TRANSITIONS=285} [2022-11-20 12:16:09,848 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 144 predicate places. [2022-11-20 12:16:09,848 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 285 transitions, 2583 flow [2022-11-20 12:16:09,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 103.3913043478261) internal successors, (2378), 23 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:09,849 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:09,849 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:09,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-11-20 12:16:10,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:16:10,055 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:16:10,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:10,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1322986484, now seen corresponding path program 2 times [2022-11-20 12:16:10,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:10,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775029337] [2022-11-20 12:16:10,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:10,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:10,331 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:10,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775029337] [2022-11-20 12:16:10,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775029337] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:16:10,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637622130] [2022-11-20 12:16:10,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:16:10,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:10,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:10,333 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:10,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:16:10,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:16:10,434 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:16:10,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:16:10,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:10,824 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:10,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:11,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637622130] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:11,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:16:11,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 34 [2022-11-20 12:16:11,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021882243] [2022-11-20 12:16:11,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:11,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 12:16:11,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:11,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 12:16:11,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=997, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 12:16:11,134 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 120 [2022-11-20 12:16:11,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 285 transitions, 2583 flow. Second operand has 35 states, 35 states have (on average 99.8) internal successors, (3493), 35 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:11,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:11,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 120 [2022-11-20 12:16:11,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:24,281 INFO L130 PetriNetUnfolder]: 11112/45860 cut-off events. [2022-11-20 12:16:24,281 INFO L131 PetriNetUnfolder]: For 290793/295203 co-relation queries the response was YES. [2022-11-20 12:16:24,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146290 conditions, 45860 events. 11112/45860 cut-off events. For 290793/295203 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 618881 event pairs, 408 based on Foata normal form. 588/45035 useless extension candidates. Maximal degree in co-relation 146172. Up to 6934 conditions per place. [2022-11-20 12:16:25,273 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 3288 selfloop transitions, 23 changer transitions 0/3413 dead transitions. [2022-11-20 12:16:25,273 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 3413 transitions, 47563 flow [2022-11-20 12:16:25,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:16:25,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 12:16:25,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2349 transitions. [2022-11-20 12:16:25,278 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8510869565217392 [2022-11-20 12:16:25,278 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2349 transitions. [2022-11-20 12:16:25,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2349 transitions. [2022-11-20 12:16:25,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:25,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2349 transitions. [2022-11-20 12:16:25,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 102.1304347826087) internal successors, (2349), 23 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:25,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 120.0) internal successors, (2880), 24 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:25,292 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 120.0) internal successors, (2880), 24 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:25,292 INFO L175 Difference]: Start difference. First operand has 262 places, 285 transitions, 2583 flow. Second operand 23 states and 2349 transitions. [2022-11-20 12:16:25,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 3413 transitions, 47563 flow [2022-11-20 12:16:25,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 3413 transitions, 42696 flow, removed 1940 selfloop flow, removed 15 redundant places. [2022-11-20 12:16:25,862 INFO L231 Difference]: Finished difference. Result has 274 places, 298 transitions, 2485 flow [2022-11-20 12:16:25,863 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2333, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2485, PETRI_PLACES=274, PETRI_TRANSITIONS=298} [2022-11-20 12:16:25,863 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 156 predicate places. [2022-11-20 12:16:25,864 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 298 transitions, 2485 flow [2022-11-20 12:16:25,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 99.8) internal successors, (3493), 35 states have internal predecessors, (3493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:25,865 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:25,865 INFO L209 CegarLoopForPetriNet]: trace histogram [6, 6, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:25,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:26,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 12:16:26,071 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:16:26,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:26,071 INFO L85 PathProgramCache]: Analyzing trace with hash 738930051, now seen corresponding path program 2 times [2022-11-20 12:16:26,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:26,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093305840] [2022-11-20 12:16:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:26,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:26,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:26,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093305840] [2022-11-20 12:16:26,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093305840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:16:26,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041539739] [2022-11-20 12:16:26,322 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:16:26,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:26,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:26,324 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:26,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:16:26,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:16:26,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:16:26,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:16:26,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:26,793 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:26,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:27,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041539739] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:27,108 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:16:27,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2022-11-20 12:16:27,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430517943] [2022-11-20 12:16:27,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:27,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-20 12:16:27,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:27,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-20 12:16:27,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=577, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:16:27,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:16:27,117 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 298 transitions, 2485 flow. Second operand has 29 states, 29 states have (on average 103.3103448275862) internal successors, (2996), 29 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:27,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:27,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:16:27,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 12:16:36,365 INFO L130 PetriNetUnfolder]: 3810/23013 cut-off events. [2022-11-20 12:16:36,366 INFO L131 PetriNetUnfolder]: For 778583/780559 co-relation queries the response was YES. [2022-11-20 12:16:36,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74758 conditions, 23013 events. 3810/23013 cut-off events. For 778583/780559 co-relation queries the response was YES. Maximal size of possible extension queue 1264. Compared 329528 event pairs, 96 based on Foata normal form. 1061/22624 useless extension candidates. Maximal degree in co-relation 74634. Up to 2009 conditions per place. [2022-11-20 12:16:36,903 INFO L137 encePairwiseOnDemand]: 112/120 looper letters, 106 selfloop transitions, 284 changer transitions 0/516 dead transitions. [2022-11-20 12:16:36,903 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 516 transitions, 5476 flow [2022-11-20 12:16:36,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-11-20 12:16:36,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-11-20 12:16:36,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 5819 transitions. [2022-11-20 12:16:36,915 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8816666666666667 [2022-11-20 12:16:36,915 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 5819 transitions. [2022-11-20 12:16:36,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 5819 transitions. [2022-11-20 12:16:36,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 12:16:36,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 5819 transitions. [2022-11-20 12:16:36,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 105.8) internal successors, (5819), 55 states have internal predecessors, (5819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:36,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 120.0) internal successors, (6720), 56 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:36,958 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 120.0) internal successors, (6720), 56 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:36,958 INFO L175 Difference]: Start difference. First operand has 274 places, 298 transitions, 2485 flow. Second operand 55 states and 5819 transitions. [2022-11-20 12:16:36,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 516 transitions, 5476 flow [2022-11-20 12:16:37,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 516 transitions, 5394 flow, removed 25 selfloop flow, removed 12 redundant places. [2022-11-20 12:16:37,498 INFO L231 Difference]: Finished difference. Result has 331 places, 446 transitions, 4979 flow [2022-11-20 12:16:37,499 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=120, PETRI_DIFFERENCE_MINUEND_FLOW=2403, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=4979, PETRI_PLACES=331, PETRI_TRANSITIONS=446} [2022-11-20 12:16:37,499 INFO L288 CegarLoopForPetriNet]: 118 programPoint places, 213 predicate places. [2022-11-20 12:16:37,499 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 446 transitions, 4979 flow [2022-11-20 12:16:37,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 103.3103448275862) internal successors, (2996), 29 states have internal predecessors, (2996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:37,501 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 12:16:37,501 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:16:37,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:16:37,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:37,707 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-20 12:16:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:16:37,707 INFO L85 PathProgramCache]: Analyzing trace with hash 789398012, now seen corresponding path program 1 times [2022-11-20 12:16:37,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:16:37,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440350846] [2022-11-20 12:16:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:37,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:16:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:37,921 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:37,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:16:37,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440350846] [2022-11-20 12:16:37,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440350846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:16:37,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043782321] [2022-11-20 12:16:37,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:16:37,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:16:37,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:16:37,926 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:16:37,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52d21cdc-ae65-43a1-9bf8-3684cf7512ff/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:16:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:16:38,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:16:38,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:16:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:38,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:16:38,618 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:16:38,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043782321] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:16:38,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:16:38,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2022-11-20 12:16:38,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995111934] [2022-11-20 12:16:38,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:16:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 12:16:38,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:16:38,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:16:38,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2022-11-20 12:16:38,624 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 120 [2022-11-20 12:16:38,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 446 transitions, 4979 flow. Second operand has 26 states, 26 states have (on average 103.34615384615384) internal successors, (2687), 26 states have internal predecessors, (2687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:16:38,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 12:16:38,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 120 [2022-11-20 12:16:38,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand