./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 2329fc70 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_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8 --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 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --- 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-2329fc7 [2022-12-13 19:20:45,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 19:20:45,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 19:20:45,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 19:20:45,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 19:20:45,183 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 19:20:45,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 19:20:45,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 19:20:45,186 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 19:20:45,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 19:20:45,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 19:20:45,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 19:20:45,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 19:20:45,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 19:20:45,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 19:20:45,190 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 19:20:45,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 19:20:45,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 19:20:45,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 19:20:45,193 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 19:20:45,194 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 19:20:45,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 19:20:45,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 19:20:45,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 19:20:45,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 19:20:45,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 19:20:45,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 19:20:45,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 19:20:45,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 19:20:45,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 19:20:45,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 19:20:45,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 19:20:45,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 19:20:45,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 19:20:45,207 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 19:20:45,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 19:20:45,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 19:20:45,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 19:20:45,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 19:20:45,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 19:20:45,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 19:20:45,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-12-13 19:20:45,228 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 19:20:45,228 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 19:20:45,228 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 19:20:45,228 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 19:20:45,229 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 19:20:45,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 19:20:45,238 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 19:20:45,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 19:20:45,238 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 19:20:45,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 19:20:45,239 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 19:20:45,239 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 19:20:45,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 19:20:45,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 19:20:45,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 19:20:45,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 19:20:45,240 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 19:20:45,240 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 19:20:45,240 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-12-13 19:20:45,240 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 19:20:45,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 19:20:45,241 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 19:20:45,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 19:20:45,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 19:20:45,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 19:20:45,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 19:20:45,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:20:45,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 19:20:45,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 19:20:45,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 19:20:45,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 19:20:45,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 19:20:45,243 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 19:20:45,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 19:20:45,243 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 19:20:45,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 19:20:45,244 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 19:20:45,244 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 [2022-12-13 19:20:45,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 19:20:45,439 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 19:20:45,442 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 19:20:45,443 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 19:20:45,444 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 19:20:45,445 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-12-13 19:20:48,030 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 19:20:48,202 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 19:20:48,203 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i [2022-12-13 19:20:48,211 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/data/bd4101296/1f9e4d574680424386f6f892486a9f30/FLAG4eff550c6 [2022-12-13 19:20:48,223 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/data/bd4101296/1f9e4d574680424386f6f892486a9f30 [2022-12-13 19:20:48,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 19:20:48,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 19:20:48,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 19:20:48,227 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 19:20:48,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 19:20:48,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2555078f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48, skipping insertion in model container [2022-12-13 19:20:48,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 19:20:48,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 19:20:48,561 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_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-12-13 19:20:48,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:20:48,591 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 19:20:48,616 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_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/sv-benchmarks/c/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2022-12-13 19:20:48,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 19:20:48,660 INFO L208 MainTranslator]: Completed translation [2022-12-13 19:20:48,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48 WrapperNode [2022-12-13 19:20:48,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 19:20:48,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 19:20:48,661 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 19:20:48,661 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 19:20:48,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,703 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 217 [2022-12-13 19:20:48,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 19:20:48,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 19:20:48,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 19:20:48,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 19:20:48,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,714 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,723 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 19:20:48,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 19:20:48,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 19:20:48,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 19:20:48,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (1/1) ... [2022-12-13 19:20:48,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 19:20:48,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:20:48,751 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 19:20:48,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 19:20:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 19:20:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 19:20:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 19:20:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 19:20:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-13 19:20:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 19:20:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-13 19:20:48,782 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-13 19:20:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 19:20:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 19:20:48,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 19:20:48,784 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-12-13 19:20:48,886 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 19:20:48,887 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 19:20:49,136 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 19:20:49,143 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 19:20:49,143 INFO L300 CfgBuilder]: Removed 22 assume(true) statements. [2022-12-13 19:20:49,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:20:49 BoogieIcfgContainer [2022-12-13 19:20:49,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 19:20:49,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 19:20:49,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 19:20:49,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 19:20:49,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 07:20:48" (1/3) ... [2022-12-13 19:20:49,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9d3390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:20:49, skipping insertion in model container [2022-12-13 19:20:49,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 07:20:48" (2/3) ... [2022-12-13 19:20:49,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9d3390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 07:20:49, skipping insertion in model container [2022-12-13 19:20:49,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 07:20:49" (3/3) ... [2022-12-13 19:20:49,152 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2022-12-13 19:20:49,159 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-12-13 19:20:49,166 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 19:20:49,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-12-13 19:20:49,167 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-13 19:20:49,218 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-12-13 19:20:49,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 236 transitions, 480 flow [2022-12-13 19:20:49,329 INFO L130 PetriNetUnfolder]: 43/315 cut-off events. [2022-12-13 19:20:49,329 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:20:49,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 315 events. 43/315 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1019 event pairs, 0 based on Foata normal form. 0/249 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2022-12-13 19:20:49,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 236 transitions, 480 flow [2022-12-13 19:20:49,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 231 transitions, 470 flow [2022-12-13 19:20:49,344 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:20:49,353 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 231 transitions, 470 flow [2022-12-13 19:20:49,356 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 231 transitions, 470 flow [2022-12-13 19:20:49,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 231 transitions, 470 flow [2022-12-13 19:20:49,402 INFO L130 PetriNetUnfolder]: 41/310 cut-off events. [2022-12-13 19:20:49,402 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:20:49,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 310 events. 41/310 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1035 event pairs, 0 based on Foata normal form. 0/246 useless extension candidates. Maximal degree in co-relation 153. Up to 8 conditions per place. [2022-12-13 19:20:49,408 INFO L119 LiptonReduction]: Number of co-enabled transitions 11570 [2022-12-13 19:20:56,116 INFO L134 LiptonReduction]: Checked pairs total: 30467 [2022-12-13 19:20:56,117 INFO L136 LiptonReduction]: Total number of compositions: 222 [2022-12-13 19:20:56,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:20:56,131 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;@32b4cf1a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:20:56,131 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2022-12-13 19:20:56,132 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 19:20:56,132 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:20:56,132 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:56,133 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 19:20:56,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:20:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:56,137 INFO L85 PathProgramCache]: Analyzing trace with hash 899, now seen corresponding path program 1 times [2022-12-13 19:20:56,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:56,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844617240] [2022-12-13 19:20:56,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:56,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:20:56,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:20:56,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844617240] [2022-12-13 19:20:56,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844617240] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:20:56,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:20:56,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 19:20:56,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804835379] [2022-12-13 19:20:56,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:20:56,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:20:56,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:20:56,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:20:56,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:20:56,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 458 [2022-12-13 19:20:56,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 84 transitions, 176 flow. Second operand has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:56,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:20:56,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 458 [2022-12-13 19:20:56,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:20:56,420 INFO L130 PetriNetUnfolder]: 522/1136 cut-off events. [2022-12-13 19:20:56,420 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:20:56,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1136 events. 522/1136 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6522 event pairs, 475 based on Foata normal form. 212/993 useless extension candidates. Maximal degree in co-relation 2119. Up to 1042 conditions per place. [2022-12-13 19:20:56,425 INFO L137 encePairwiseOnDemand]: 431/458 looper letters, 49 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2022-12-13 19:20:56,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 57 transitions, 220 flow [2022-12-13 19:20:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:20:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 19:20:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 492 transitions. [2022-12-13 19:20:56,436 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.537117903930131 [2022-12-13 19:20:56,436 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 492 transitions. [2022-12-13 19:20:56,437 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 492 transitions. [2022-12-13 19:20:56,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:56,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 492 transitions. [2022-12-13 19:20:56,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 246.0) internal successors, (492), 2 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:56,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 458.0) internal successors, (1374), 3 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:56,450 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 458.0) internal successors, (1374), 3 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:56,451 INFO L175 Difference]: Start difference. First operand has 63 places, 84 transitions, 176 flow. Second operand 2 states and 492 transitions. [2022-12-13 19:20:56,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 57 transitions, 220 flow [2022-12-13 19:20:56,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 57 transitions, 220 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:20:56,456 INFO L231 Difference]: Finished difference. Result has 59 places, 57 transitions, 122 flow [2022-12-13 19:20:56,457 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=57} [2022-12-13 19:20:56,460 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -4 predicate places. [2022-12-13 19:20:56,460 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 57 transitions, 122 flow [2022-12-13 19:20:56,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 208.5) internal successors, (417), 2 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:56,461 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:56,461 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-13 19:20:56,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 19:20:56,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:20:56,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:56,462 INFO L85 PathProgramCache]: Analyzing trace with hash 27739087, now seen corresponding path program 1 times [2022-12-13 19:20:56,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:56,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296038137] [2022-12-13 19:20:56,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:56,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:20:56,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:20:56,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:20:56,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296038137] [2022-12-13 19:20:56,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296038137] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:20:56,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:20:56,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:20:56,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120864033] [2022-12-13 19:20:56,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:20:56,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:20:56,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:20:56,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:20:56,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:20:56,648 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 458 [2022-12-13 19:20:56,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:56,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:20:56,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 458 [2022-12-13 19:20:56,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:20:56,808 INFO L130 PetriNetUnfolder]: 458/1006 cut-off events. [2022-12-13 19:20:56,808 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-13 19:20:56,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1955 conditions, 1006 events. 458/1006 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 6403 event pairs, 0 based on Foata normal form. 0/719 useless extension candidates. Maximal degree in co-relation 1951. Up to 901 conditions per place. [2022-12-13 19:20:56,812 INFO L137 encePairwiseOnDemand]: 453/458 looper letters, 65 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2022-12-13 19:20:56,812 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 75 transitions, 292 flow [2022-12-13 19:20:56,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:20:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:20:56,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-12-13 19:20:56,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4963609898107715 [2022-12-13 19:20:56,817 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-12-13 19:20:56,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-12-13 19:20:56,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:20:56,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-12-13 19:20:56,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:56,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:56,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 458.0) internal successors, (1832), 4 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:56,829 INFO L175 Difference]: Start difference. First operand has 59 places, 57 transitions, 122 flow. Second operand 3 states and 682 transitions. [2022-12-13 19:20:56,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 75 transitions, 292 flow [2022-12-13 19:20:56,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 75 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:20:56,834 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 126 flow [2022-12-13 19:20:56,834 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=458, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2022-12-13 19:20:56,835 INFO L288 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2022-12-13 19:20:56,835 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 126 flow [2022-12-13 19:20:56,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.33333333333334) internal successors, (616), 3 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:20:56,836 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:20:56,836 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2022-12-13 19:20:56,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 19:20:56,836 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2022-12-13 19:20:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:20:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 887537725, now seen corresponding path program 1 times [2022-12-13 19:20:56,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:20:56,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82911] [2022-12-13 19:20:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:20:56,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:20:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:20:56,862 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:20:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:20:56,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:20:56,889 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:20:56,890 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2022-12-13 19:20:56,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2022-12-13 19:20:56,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2022-12-13 19:20:56,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2022-12-13 19:20:56,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2022-12-13 19:20:56,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2022-12-13 19:20:56,892 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2022-12-13 19:20:56,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2022-12-13 19:20:56,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2022-12-13 19:20:56,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2022-12-13 19:20:56,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2022-12-13 19:20:56,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2022-12-13 19:20:56,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2022-12-13 19:20:56,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2022-12-13 19:20:56,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2022-12-13 19:20:56,893 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2022-12-13 19:20:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2022-12-13 19:20:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2022-12-13 19:20:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2022-12-13 19:20:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2022-12-13 19:20:56,894 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2022-12-13 19:20:56,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 19:20:56,894 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-12-13 19:20:56,896 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:20:56,896 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-12-13 19:20:56,922 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-13 19:20:56,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 303 transitions, 624 flow [2022-12-13 19:20:56,976 INFO L130 PetriNetUnfolder]: 72/498 cut-off events. [2022-12-13 19:20:56,976 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:20:56,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 498 events. 72/498 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1977 event pairs, 0 based on Foata normal form. 0/388 useless extension candidates. Maximal degree in co-relation 317. Up to 12 conditions per place. [2022-12-13 19:20:56,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 266 places, 303 transitions, 624 flow [2022-12-13 19:20:56,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 301 transitions, 620 flow [2022-12-13 19:20:56,982 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:20:56,982 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 301 transitions, 620 flow [2022-12-13 19:20:56,982 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 301 transitions, 620 flow [2022-12-13 19:20:56,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 301 transitions, 620 flow [2022-12-13 19:20:57,035 INFO L130 PetriNetUnfolder]: 71/496 cut-off events. [2022-12-13 19:20:57,035 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-13 19:20:57,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 510 conditions, 496 events. 71/496 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1989 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 315. Up to 12 conditions per place. [2022-12-13 19:20:57,049 INFO L119 LiptonReduction]: Number of co-enabled transitions 34060 [2022-12-13 19:21:04,416 INFO L134 LiptonReduction]: Checked pairs total: 85557 [2022-12-13 19:21:04,416 INFO L136 LiptonReduction]: Total number of compositions: 279 [2022-12-13 19:21:04,417 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:21:04,418 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;@32b4cf1a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:21:04,418 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-12-13 19:21:04,419 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 19:21:04,419 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:21:04,419 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:21:04,419 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 19:21:04,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 19:21:04,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:04,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1544, now seen corresponding path program 1 times [2022-12-13 19:21:04,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:04,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140520884] [2022-12-13 19:21:04,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:04,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:21:04,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:04,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140520884] [2022-12-13 19:21:04,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140520884] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:04,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:21:04,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 19:21:04,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302225008] [2022-12-13 19:21:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:04,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:21:04,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:04,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:21:04,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:21:04,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 582 [2022-12-13 19:21:04,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 118 transitions, 254 flow. Second operand has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:04,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:21:04,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 582 [2022-12-13 19:21:04,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:21:06,241 INFO L130 PetriNetUnfolder]: 19099/30153 cut-off events. [2022-12-13 19:21:06,241 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2022-12-13 19:21:06,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58293 conditions, 30153 events. 19099/30153 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 1138. Compared 225506 event pairs, 17746 based on Foata normal form. 4547/26117 useless extension candidates. Maximal degree in co-relation 24424. Up to 28026 conditions per place. [2022-12-13 19:21:06,382 INFO L137 encePairwiseOnDemand]: 546/582 looper letters, 69 selfloop transitions, 0 changer transitions 0/82 dead transitions. [2022-12-13 19:21:06,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 320 flow [2022-12-13 19:21:06,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:21:06,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 19:21:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 627 transitions. [2022-12-13 19:21:06,384 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.538659793814433 [2022-12-13 19:21:06,384 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 627 transitions. [2022-12-13 19:21:06,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 627 transitions. [2022-12-13 19:21:06,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:21:06,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 627 transitions. [2022-12-13 19:21:06,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 313.5) internal successors, (627), 2 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:06,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 582.0) internal successors, (1746), 3 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:06,388 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 582.0) internal successors, (1746), 3 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:06,388 INFO L175 Difference]: Start difference. First operand has 86 places, 118 transitions, 254 flow. Second operand 2 states and 627 transitions. [2022-12-13 19:21:06,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 320 flow [2022-12-13 19:21:06,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 82 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:21:06,391 INFO L231 Difference]: Finished difference. Result has 83 places, 82 transitions, 182 flow [2022-12-13 19:21:06,391 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=182, PETRI_PLACES=83, PETRI_TRANSITIONS=82} [2022-12-13 19:21:06,392 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2022-12-13 19:21:06,392 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 82 transitions, 182 flow [2022-12-13 19:21:06,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 261.5) internal successors, (523), 2 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:06,392 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:21:06,392 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:21:06,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 19:21:06,392 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 19:21:06,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1479009662, now seen corresponding path program 1 times [2022-12-13 19:21:06,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:06,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712109931] [2022-12-13 19:21:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:06,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:06,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:21:06,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:06,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712109931] [2022-12-13 19:21:06,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712109931] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:06,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:21:06,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:21:06,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159241846] [2022-12-13 19:21:06,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:06,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:21:06,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:21:06,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:21:06,475 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 582 [2022-12-13 19:21:06,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 82 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:06,477 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:21:06,477 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 582 [2022-12-13 19:21:06,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:21:08,079 INFO L130 PetriNetUnfolder]: 18578/29452 cut-off events. [2022-12-13 19:21:08,079 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2022-12-13 19:21:08,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57413 conditions, 29452 events. 18578/29452 cut-off events. For 87/87 co-relation queries the response was YES. Maximal size of possible extension queue 1098. Compared 223143 event pairs, 8532 based on Foata normal form. 0/21023 useless extension candidates. Maximal degree in co-relation 57408. Up to 27806 conditions per place. [2022-12-13 19:21:08,174 INFO L137 encePairwiseOnDemand]: 577/582 looper letters, 86 selfloop transitions, 2 changer transitions 0/101 dead transitions. [2022-12-13 19:21:08,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 396 flow [2022-12-13 19:21:08,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:21:08,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:21:08,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 862 transitions. [2022-12-13 19:21:08,176 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4936998854524628 [2022-12-13 19:21:08,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 862 transitions. [2022-12-13 19:21:08,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 862 transitions. [2022-12-13 19:21:08,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:21:08,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 862 transitions. [2022-12-13 19:21:08,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:08,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:08,181 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:08,181 INFO L175 Difference]: Start difference. First operand has 83 places, 82 transitions, 182 flow. Second operand 3 states and 862 transitions. [2022-12-13 19:21:08,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 396 flow [2022-12-13 19:21:08,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 101 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:21:08,183 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 198 flow [2022-12-13 19:21:08,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2022-12-13 19:21:08,184 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 0 predicate places. [2022-12-13 19:21:08,184 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 198 flow [2022-12-13 19:21:08,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:08,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:21:08,185 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:08,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 19:21:08,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 19:21:08,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:08,185 INFO L85 PathProgramCache]: Analyzing trace with hash -563832365, now seen corresponding path program 1 times [2022-12-13 19:21:08,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:08,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366699096] [2022-12-13 19:21:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:08,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:08,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:08,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:21:08,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:08,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366699096] [2022-12-13 19:21:08,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366699096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:08,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:21:08,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:21:08,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667945629] [2022-12-13 19:21:08,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:08,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:21:08,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:08,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:21:08,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:21:08,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 582 [2022-12-13 19:21:08,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:08,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:21:08,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 582 [2022-12-13 19:21:08,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:21:10,524 INFO L130 PetriNetUnfolder]: 20011/32432 cut-off events. [2022-12-13 19:21:10,524 INFO L131 PetriNetUnfolder]: For 890/890 co-relation queries the response was YES. [2022-12-13 19:21:10,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64706 conditions, 32432 events. 20011/32432 cut-off events. For 890/890 co-relation queries the response was YES. Maximal size of possible extension queue 1261. Compared 253885 event pairs, 7144 based on Foata normal form. 0/24679 useless extension candidates. Maximal degree in co-relation 64699. Up to 22847 conditions per place. [2022-12-13 19:21:10,634 INFO L137 encePairwiseOnDemand]: 567/582 looper letters, 157 selfloop transitions, 12 changer transitions 0/182 dead transitions. [2022-12-13 19:21:10,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 182 transitions, 770 flow [2022-12-13 19:21:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:21:10,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:21:10,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1173 transitions. [2022-12-13 19:21:10,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5038659793814433 [2022-12-13 19:21:10,637 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1173 transitions. [2022-12-13 19:21:10,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1173 transitions. [2022-12-13 19:21:10,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:21:10,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1173 transitions. [2022-12-13 19:21:10,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:10,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 582.0) internal successors, (2910), 5 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:10,644 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 582.0) internal successors, (2910), 5 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:10,644 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 198 flow. Second operand 4 states and 1173 transitions. [2022-12-13 19:21:10,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 182 transitions, 770 flow [2022-12-13 19:21:10,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 182 transitions, 767 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:21:10,650 INFO L231 Difference]: Finished difference. Result has 91 places, 94 transitions, 302 flow [2022-12-13 19:21:10,650 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=91, PETRI_TRANSITIONS=94} [2022-12-13 19:21:10,651 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 5 predicate places. [2022-12-13 19:21:10,651 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 94 transitions, 302 flow [2022-12-13 19:21:10,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 250.5) internal successors, (1002), 4 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:10,652 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:21:10,652 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:21:10,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 19:21:10,652 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 19:21:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1786422279, now seen corresponding path program 1 times [2022-12-13 19:21:10,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:10,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852795989] [2022-12-13 19:21:10,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:21:10,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:10,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852795989] [2022-12-13 19:21:10,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852795989] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:10,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:21:10,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:21:10,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414975442] [2022-12-13 19:21:10,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:10,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:21:10,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:10,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:21:10,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:21:10,713 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 582 [2022-12-13 19:21:10,714 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 94 transitions, 302 flow. Second operand has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:10,714 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:21:10,714 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 582 [2022-12-13 19:21:10,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:21:12,517 INFO L130 PetriNetUnfolder]: 19376/31427 cut-off events. [2022-12-13 19:21:12,518 INFO L131 PetriNetUnfolder]: For 6744/6744 co-relation queries the response was YES. [2022-12-13 19:21:12,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70985 conditions, 31427 events. 19376/31427 cut-off events. For 6744/6744 co-relation queries the response was YES. Maximal size of possible extension queue 1233. Compared 244132 event pairs, 17654 based on Foata normal form. 0/25803 useless extension candidates. Maximal degree in co-relation 70976. Up to 29679 conditions per place. [2022-12-13 19:21:12,639 INFO L137 encePairwiseOnDemand]: 580/582 looper letters, 79 selfloop transitions, 1 changer transitions 0/93 dead transitions. [2022-12-13 19:21:12,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 93 transitions, 458 flow [2022-12-13 19:21:12,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:21:12,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:21:12,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 840 transitions. [2022-12-13 19:21:12,641 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48109965635738833 [2022-12-13 19:21:12,641 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 840 transitions. [2022-12-13 19:21:12,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 840 transitions. [2022-12-13 19:21:12,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:21:12,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 840 transitions. [2022-12-13 19:21:12,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 280.0) internal successors, (840), 3 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) [2022-12-13 19:21:12,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:12,646 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:12,646 INFO L175 Difference]: Start difference. First operand has 91 places, 94 transitions, 302 flow. Second operand 3 states and 840 transitions. [2022-12-13 19:21:12,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 93 transitions, 458 flow [2022-12-13 19:21:12,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 93 transitions, 458 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:21:12,660 INFO L231 Difference]: Finished difference. Result has 92 places, 93 transitions, 300 flow [2022-12-13 19:21:12,660 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=92, PETRI_TRANSITIONS=93} [2022-12-13 19:21:12,660 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 6 predicate places. [2022-12-13 19:21:12,661 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 93 transitions, 300 flow [2022-12-13 19:21:12,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 259.3333333333333) internal successors, (778), 3 states have internal predecessors, (778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:12,662 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:21:12,662 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:21:12,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 19:21:12,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 19:21:12,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:12,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1786422202, now seen corresponding path program 1 times [2022-12-13 19:21:12,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:12,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429903047] [2022-12-13 19:21:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:12,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 19:21:12,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:12,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429903047] [2022-12-13 19:21:12,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429903047] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:12,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:21:12,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:21:12,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727454274] [2022-12-13 19:21:12,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:12,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:21:12,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:12,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:21:12,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:21:12,700 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 582 [2022-12-13 19:21:12,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 300 flow. Second operand has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:12,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:21:12,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 582 [2022-12-13 19:21:12,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:21:14,598 INFO L130 PetriNetUnfolder]: 18616/30117 cut-off events. [2022-12-13 19:21:14,598 INFO L131 PetriNetUnfolder]: For 6053/6053 co-relation queries the response was YES. [2022-12-13 19:21:14,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68128 conditions, 30117 events. 18616/30117 cut-off events. For 6053/6053 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 238355 event pairs, 3503 based on Foata normal form. 0/25011 useless extension candidates. Maximal degree in co-relation 68118. Up to 26968 conditions per place. [2022-12-13 19:21:14,733 INFO L137 encePairwiseOnDemand]: 578/582 looper letters, 114 selfloop transitions, 5 changer transitions 0/132 dead transitions. [2022-12-13 19:21:14,733 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 132 transitions, 660 flow [2022-12-13 19:21:14,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:21:14,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:21:14,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 872 transitions. [2022-12-13 19:21:14,736 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49942726231386025 [2022-12-13 19:21:14,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 872 transitions. [2022-12-13 19:21:14,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 872 transitions. [2022-12-13 19:21:14,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:21:14,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 872 transitions. [2022-12-13 19:21:14,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 290.6666666666667) internal successors, (872), 3 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:14,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:14,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 582.0) internal successors, (2328), 4 states have internal predecessors, (2328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:14,742 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 300 flow. Second operand 3 states and 872 transitions. [2022-12-13 19:21:14,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 132 transitions, 660 flow [2022-12-13 19:21:14,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 132 transitions, 659 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:21:14,751 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 316 flow [2022-12-13 19:21:14,751 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=316, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2022-12-13 19:21:14,752 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, 7 predicate places. [2022-12-13 19:21:14,752 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 316 flow [2022-12-13 19:21:14,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:14,752 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:21:14,752 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:14,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 19:21:14,753 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 19:21:14,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:14,753 INFO L85 PathProgramCache]: Analyzing trace with hash 474985667, now seen corresponding path program 1 times [2022-12-13 19:21:14,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:14,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285562484] [2022-12-13 19:21:14,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:14,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:21:14,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:14,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285562484] [2022-12-13 19:21:14,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285562484] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:21:14,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205736831] [2022-12-13 19:21:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:14,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:14,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:21:14,810 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:21:14,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 19:21:14,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:14,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:21:14,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:21:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:21:15,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:21:15,168 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:21:15,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205736831] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:21:15,169 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:21:15,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 19:21:15,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088043284] [2022-12-13 19:21:15,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:21:15,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:21:15,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:15,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:21:15,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:21:15,185 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 582 [2022-12-13 19:21:15,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 316 flow. Second operand has 6 states, 6 states have (on average 258.1666666666667) internal successors, (1549), 6 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:15,188 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:21:15,188 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 582 [2022-12-13 19:21:15,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:21:15,559 INFO L130 PetriNetUnfolder]: 1646/3131 cut-off events. [2022-12-13 19:21:15,560 INFO L131 PetriNetUnfolder]: For 3048/3048 co-relation queries the response was YES. [2022-12-13 19:21:15,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9029 conditions, 3131 events. 1646/3131 cut-off events. For 3048/3048 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 21284 event pairs, 188 based on Foata normal form. 363/3223 useless extension candidates. Maximal degree in co-relation 9019. Up to 1981 conditions per place. [2022-12-13 19:21:15,576 INFO L137 encePairwiseOnDemand]: 579/582 looper letters, 99 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2022-12-13 19:21:15,576 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 111 transitions, 573 flow [2022-12-13 19:21:15,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 19:21:15,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-13 19:21:15,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1375 transitions. [2022-12-13 19:21:15,580 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4725085910652921 [2022-12-13 19:21:15,580 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1375 transitions. [2022-12-13 19:21:15,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1375 transitions. [2022-12-13 19:21:15,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:21:15,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1375 transitions. [2022-12-13 19:21:15,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:15,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 582.0) internal successors, (3492), 6 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:15,590 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 582.0) internal successors, (3492), 6 states have internal predecessors, (3492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:15,591 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 316 flow. Second operand 5 states and 1375 transitions. [2022-12-13 19:21:15,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 111 transitions, 573 flow [2022-12-13 19:21:15,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 111 transitions, 565 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-12-13 19:21:15,598 INFO L231 Difference]: Finished difference. Result has 68 places, 56 transitions, 203 flow [2022-12-13 19:21:15,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=582, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=68, PETRI_TRANSITIONS=56} [2022-12-13 19:21:15,599 INFO L288 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2022-12-13 19:21:15,599 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 56 transitions, 203 flow [2022-12-13 19:21:15,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 258.1666666666667) internal successors, (1549), 6 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:15,600 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:21:15,600 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-12-13 19:21:15,606 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 19:21:15,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:21:15,802 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-12-13 19:21:15,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1235228840, now seen corresponding path program 1 times [2022-12-13 19:21:15,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:15,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126738718] [2022-12-13 19:21:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:15,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:21:15,853 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 19:21:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 19:21:15,871 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 19:21:15,871 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 19:21:15,871 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-12-13 19:21:15,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-12-13 19:21:15,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-12-13 19:21:15,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-12-13 19:21:15,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-12-13 19:21:15,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-12-13 19:21:15,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-12-13 19:21:15,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-12-13 19:21:15,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-12-13 19:21:15,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-12-13 19:21:15,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-12-13 19:21:15,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-12-13 19:21:15,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-12-13 19:21:15,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-12-13 19:21:15,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-12-13 19:21:15,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-12-13 19:21:15,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-12-13 19:21:15,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-12-13 19:21:15,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-12-13 19:21:15,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-12-13 19:21:15,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-12-13 19:21:15,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-12-13 19:21:15,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-12-13 19:21:15,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-12-13 19:21:15,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-12-13 19:21:15,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 19:21:15,876 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:21:15,877 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-12-13 19:21:15,877 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-12-13 19:21:15,909 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-13 19:21:15,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 370 transitions, 770 flow [2022-12-13 19:21:16,023 INFO L130 PetriNetUnfolder]: 106/722 cut-off events. [2022-12-13 19:21:16,023 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 19:21:16,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 722 events. 106/722 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3135 event pairs, 1 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 506. Up to 16 conditions per place. [2022-12-13 19:21:16,027 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 370 transitions, 770 flow [2022-12-13 19:21:16,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 368 transitions, 766 flow [2022-12-13 19:21:16,033 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-12-13 19:21:16,033 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 368 transitions, 766 flow [2022-12-13 19:21:16,033 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 368 transitions, 766 flow [2022-12-13 19:21:16,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 368 transitions, 766 flow [2022-12-13 19:21:16,136 INFO L130 PetriNetUnfolder]: 105/720 cut-off events. [2022-12-13 19:21:16,137 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-12-13 19:21:16,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 720 events. 105/720 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3155 event pairs, 1 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 504. Up to 16 conditions per place. [2022-12-13 19:21:16,172 INFO L119 LiptonReduction]: Number of co-enabled transitions 64350 [2022-12-13 19:21:21,773 INFO L134 LiptonReduction]: Checked pairs total: 145583 [2022-12-13 19:21:21,773 INFO L136 LiptonReduction]: Total number of compositions: 317 [2022-12-13 19:21:21,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 19:21:21,775 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;@32b4cf1a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 19:21:21,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2022-12-13 19:21:21,776 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2022-12-13 19:21:21,776 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-13 19:21:21,776 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:21:21,776 INFO L209 CegarLoopForPetriNet]: trace histogram [1] [2022-12-13 19:21:21,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:21:21,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:21:21,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2307, now seen corresponding path program 1 times [2022-12-13 19:21:21,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:21:21,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073233619] [2022-12-13 19:21:21,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:21:21,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:21:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:21:21,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:21:21,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:21:21,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073233619] [2022-12-13 19:21:21,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073233619] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:21:21,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:21:21,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-12-13 19:21:21,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552956025] [2022-12-13 19:21:21,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:21:21,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 19:21:21,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:21:21,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 19:21:21,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 19:21:21,783 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 687 [2022-12-13 19:21:21,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 150 transitions, 330 flow. Second operand has 2 states, 2 states have (on average 314.5) internal successors, (629), 2 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:21:21,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:21:21,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 687 [2022-12-13 19:21:21,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:22:03,172 INFO L130 PetriNetUnfolder]: 574191/784747 cut-off events. [2022-12-13 19:22:03,172 INFO L131 PetriNetUnfolder]: For 5000/5000 co-relation queries the response was YES. [2022-12-13 19:22:04,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1541881 conditions, 784747 events. 574191/784747 cut-off events. For 5000/5000 co-relation queries the response was YES. Maximal size of possible extension queue 20408. Compared 6365625 event pairs, 546591 based on Foata normal form. 122718/675767 useless extension candidates. Maximal degree in co-relation 230072. Up to 754192 conditions per place. [2022-12-13 19:22:06,589 INFO L137 encePairwiseOnDemand]: 642/687 looper letters, 90 selfloop transitions, 0 changer transitions 0/105 dead transitions. [2022-12-13 19:22:06,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 420 flow [2022-12-13 19:22:06,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 19:22:06,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-13 19:22:06,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 763 transitions. [2022-12-13 19:22:06,592 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5553129548762736 [2022-12-13 19:22:06,592 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 763 transitions. [2022-12-13 19:22:06,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 763 transitions. [2022-12-13 19:22:06,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:22:06,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 763 transitions. [2022-12-13 19:22:06,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 381.5) internal successors, (763), 2 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:06,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 687.0) internal successors, (2061), 3 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:06,596 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 687.0) internal successors, (2061), 3 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:06,596 INFO L175 Difference]: Start difference. First operand has 109 places, 150 transitions, 330 flow. Second operand 2 states and 763 transitions. [2022-12-13 19:22:06,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 420 flow [2022-12-13 19:22:06,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 105 transitions, 420 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:22:06,604 INFO L231 Difference]: Finished difference. Result has 106 places, 105 transitions, 240 flow [2022-12-13 19:22:06,605 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=240, PETRI_PLACES=106, PETRI_TRANSITIONS=105} [2022-12-13 19:22:06,605 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -3 predicate places. [2022-12-13 19:22:06,605 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 105 transitions, 240 flow [2022-12-13 19:22:06,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 314.5) internal successors, (629), 2 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:06,606 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:22:06,606 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:22:06,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 19:22:06,606 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:22:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:22:06,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2098449269, now seen corresponding path program 1 times [2022-12-13 19:22:06,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:22:06,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336033899] [2022-12-13 19:22:06,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:22:06,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:22:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:22:06,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:22:06,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:22:06,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336033899] [2022-12-13 19:22:06,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336033899] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:22:06,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:22:06,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:22:06,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166393550] [2022-12-13 19:22:06,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:22:06,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:22:06,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:22:06,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:22:06,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:22:06,645 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 687 [2022-12-13 19:22:06,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 105 transitions, 240 flow. Second operand has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:06,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:22:06,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 687 [2022-12-13 19:22:06,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:22:44,232 INFO L130 PetriNetUnfolder]: 536632/745492 cut-off events. [2022-12-13 19:22:44,232 INFO L131 PetriNetUnfolder]: For 3530/3530 co-relation queries the response was YES. [2022-12-13 19:22:45,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469627 conditions, 745492 events. 536632/745492 cut-off events. For 3530/3530 co-relation queries the response was YES. Maximal size of possible extension queue 19783. Compared 6418033 event pairs, 80871 based on Foata normal form. 0/528868 useless extension candidates. Maximal degree in co-relation 1469621. Up to 646093 conditions per place. [2022-12-13 19:22:47,847 INFO L137 encePairwiseOnDemand]: 682/687 looper letters, 141 selfloop transitions, 3 changer transitions 0/159 dead transitions. [2022-12-13 19:22:47,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 159 transitions, 636 flow [2022-12-13 19:22:47,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:22:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:22:47,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1073 transitions. [2022-12-13 19:22:47,852 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5206210577389617 [2022-12-13 19:22:47,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1073 transitions. [2022-12-13 19:22:47,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1073 transitions. [2022-12-13 19:22:47,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:22:47,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1073 transitions. [2022-12-13 19:22:47,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 357.6666666666667) internal successors, (1073), 3 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:47,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:47,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:47,858 INFO L175 Difference]: Start difference. First operand has 106 places, 105 transitions, 240 flow. Second operand 3 states and 1073 transitions. [2022-12-13 19:22:47,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 159 transitions, 636 flow [2022-12-13 19:22:47,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 159 transitions, 636 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:22:47,862 INFO L231 Difference]: Finished difference. Result has 109 places, 105 transitions, 256 flow [2022-12-13 19:22:47,862 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=109, PETRI_TRANSITIONS=105} [2022-12-13 19:22:47,862 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 0 predicate places. [2022-12-13 19:22:47,862 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 105 transitions, 256 flow [2022-12-13 19:22:47,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 310.3333333333333) internal successors, (931), 3 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:47,863 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:22:47,863 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-13 19:22:47,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 19:22:47,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:22:47,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:22:47,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2098449369, now seen corresponding path program 1 times [2022-12-13 19:22:47,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:22:47,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126420960] [2022-12-13 19:22:47,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:22:47,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:22:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:22:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:22:47,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:22:47,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126420960] [2022-12-13 19:22:47,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126420960] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:22:47,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:22:47,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-13 19:22:47,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510786447] [2022-12-13 19:22:47,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:22:47,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:22:47,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:22:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:22:47,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:22:47,917 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 687 [2022-12-13 19:22:47,919 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 105 transitions, 256 flow. Second operand has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:22:47,919 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:22:47,919 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 687 [2022-12-13 19:22:47,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:23:27,436 INFO L130 PetriNetUnfolder]: 550482/755711 cut-off events. [2022-12-13 19:23:27,436 INFO L131 PetriNetUnfolder]: For 54608/54608 co-relation queries the response was YES. [2022-12-13 19:23:28,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1521542 conditions, 755711 events. 550482/755711 cut-off events. For 54608/54608 co-relation queries the response was YES. Maximal size of possible extension queue 19762. Compared 6156008 event pairs, 345948 based on Foata normal form. 18/551089 useless extension candidates. Maximal degree in co-relation 1521534. Up to 726713 conditions per place. [2022-12-13 19:23:31,216 INFO L137 encePairwiseOnDemand]: 684/687 looper letters, 107 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2022-12-13 19:23:31,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 124 transitions, 516 flow [2022-12-13 19:23:31,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:23:31,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:23:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1040 transitions. [2022-12-13 19:23:31,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5046094129063562 [2022-12-13 19:23:31,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1040 transitions. [2022-12-13 19:23:31,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1040 transitions. [2022-12-13 19:23:31,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:23:31,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1040 transitions. [2022-12-13 19:23:31,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 346.6666666666667) internal successors, (1040), 3 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:31,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:31,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:31,225 INFO L175 Difference]: Start difference. First operand has 109 places, 105 transitions, 256 flow. Second operand 3 states and 1040 transitions. [2022-12-13 19:23:31,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 124 transitions, 516 flow [2022-12-13 19:23:31,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 124 transitions, 508 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-13 19:23:31,269 INFO L231 Difference]: Finished difference. Result has 110 places, 106 transitions, 264 flow [2022-12-13 19:23:31,269 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=110, PETRI_TRANSITIONS=106} [2022-12-13 19:23:31,270 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 1 predicate places. [2022-12-13 19:23:31,270 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 106 transitions, 264 flow [2022-12-13 19:23:31,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:31,270 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:23:31,270 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:23:31,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 19:23:31,271 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:23:31,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:23:31,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1280388925, now seen corresponding path program 1 times [2022-12-13 19:23:31,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:23:31,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624304625] [2022-12-13 19:23:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:23:31,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:23:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:23:31,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:23:31,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:23:31,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624304625] [2022-12-13 19:23:31,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624304625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:23:31,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:23:31,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:23:31,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279914082] [2022-12-13 19:23:31,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:23:31,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 19:23:31,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:23:31,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 19:23:31,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-13 19:23:31,447 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 687 [2022-12-13 19:23:31,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 106 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 301.75) internal successors, (1207), 4 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:23:31,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:23:31,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 687 [2022-12-13 19:23:31,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:24:21,237 INFO L130 PetriNetUnfolder]: 650327/905905 cut-off events. [2022-12-13 19:24:21,237 INFO L131 PetriNetUnfolder]: For 48447/48447 co-relation queries the response was YES. [2022-12-13 19:24:22,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830923 conditions, 905905 events. 650327/905905 cut-off events. For 48447/48447 co-relation queries the response was YES. Maximal size of possible extension queue 26296. Compared 7801696 event pairs, 200820 based on Foata normal form. 0/686057 useless extension candidates. Maximal degree in co-relation 1830914. Up to 666766 conditions per place. [2022-12-13 19:24:25,680 INFO L137 encePairwiseOnDemand]: 662/687 looper letters, 203 selfloop transitions, 17 changer transitions 0/235 dead transitions. [2022-12-13 19:24:25,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 235 transitions, 1024 flow [2022-12-13 19:24:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 19:24:25,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-13 19:24:25,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1435 transitions. [2022-12-13 19:24:25,683 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.522197962154294 [2022-12-13 19:24:25,683 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1435 transitions. [2022-12-13 19:24:25,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1435 transitions. [2022-12-13 19:24:25,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:24:25,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1435 transitions. [2022-12-13 19:24:25,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 358.75) internal successors, (1435), 4 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:25,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 687.0) internal successors, (3435), 5 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:25,691 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 687.0) internal successors, (3435), 5 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:25,691 INFO L175 Difference]: Start difference. First operand has 110 places, 106 transitions, 264 flow. Second operand 4 states and 1435 transitions. [2022-12-13 19:24:25,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 235 transitions, 1024 flow [2022-12-13 19:24:25,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 235 transitions, 1021 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-13 19:24:25,742 INFO L231 Difference]: Finished difference. Result has 115 places, 122 transitions, 424 flow [2022-12-13 19:24:25,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=424, PETRI_PLACES=115, PETRI_TRANSITIONS=122} [2022-12-13 19:24:25,743 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 6 predicate places. [2022-12-13 19:24:25,743 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 122 transitions, 424 flow [2022-12-13 19:24:25,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 301.75) internal successors, (1207), 4 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:25,744 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:24:25,744 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-12-13 19:24:25,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 19:24:25,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:24:25,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:24:25,744 INFO L85 PathProgramCache]: Analyzing trace with hash 359769587, now seen corresponding path program 1 times [2022-12-13 19:24:25,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:24:25,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957264198] [2022-12-13 19:24:25,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:24:25,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:24:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:24:25,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:24:25,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:24:25,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957264198] [2022-12-13 19:24:25,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957264198] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:24:25,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:24:25,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:24:25,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328770747] [2022-12-13 19:24:25,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:24:25,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:24:25,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:24:25,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:24:25,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:24:25,778 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 687 [2022-12-13 19:24:25,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 122 transitions, 424 flow. Second operand has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:24:25,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:24:25,779 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 687 [2022-12-13 19:24:25,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:25:22,072 INFO L130 PetriNetUnfolder]: 628318/876622 cut-off events. [2022-12-13 19:25:22,072 INFO L131 PetriNetUnfolder]: For 257667/257703 co-relation queries the response was YES. [2022-12-13 19:25:24,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2080325 conditions, 876622 events. 628318/876622 cut-off events. For 257667/257703 co-relation queries the response was YES. Maximal size of possible extension queue 25428. Compared 7519901 event pairs, 562086 based on Foata normal form. 8318/741512 useless extension candidates. Maximal degree in co-relation 2080314. Up to 848750 conditions per place. [2022-12-13 19:25:27,094 INFO L137 encePairwiseOnDemand]: 685/687 looper letters, 105 selfloop transitions, 1 changer transitions 0/121 dead transitions. [2022-12-13 19:25:27,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 121 transitions, 632 flow [2022-12-13 19:25:27,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:25:27,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:25:27,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1019 transitions. [2022-12-13 19:25:27,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49442018437651625 [2022-12-13 19:25:27,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1019 transitions. [2022-12-13 19:25:27,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1019 transitions. [2022-12-13 19:25:27,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:25:27,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1019 transitions. [2022-12-13 19:25:27,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:27,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:27,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:27,100 INFO L175 Difference]: Start difference. First operand has 115 places, 122 transitions, 424 flow. Second operand 3 states and 1019 transitions. [2022-12-13 19:25:27,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 121 transitions, 632 flow [2022-12-13 19:25:27,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 632 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-13 19:25:27,287 INFO L231 Difference]: Finished difference. Result has 116 places, 121 transitions, 422 flow [2022-12-13 19:25:27,287 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=422, PETRI_PLACES=116, PETRI_TRANSITIONS=121} [2022-12-13 19:25:27,288 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, 7 predicate places. [2022-12-13 19:25:27,288 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 121 transitions, 422 flow [2022-12-13 19:25:27,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 312.3333333333333) internal successors, (937), 3 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:27,288 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:25:27,288 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:25:27,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 19:25:27,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:25:27,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:25:27,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1722284055, now seen corresponding path program 1 times [2022-12-13 19:25:27,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:25:27,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875903233] [2022-12-13 19:25:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:25:27,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:25:27,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:25:27,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:25:27,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:25:27,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875903233] [2022-12-13 19:25:27,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875903233] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:25:27,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644283803] [2022-12-13 19:25:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:25:27,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:25:27,326 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:25:27,327 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:25:27,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 19:25:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:25:27,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 19:25:27,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:25:27,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:25:27,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 19:25:27,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:25:27,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644283803] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 19:25:27,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 19:25:27,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2022-12-13 19:25:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436244824] [2022-12-13 19:25:27,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 19:25:27,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:25:27,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:25:27,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:25:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:25:27,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 687 [2022-12-13 19:25:27,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 121 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 311.1666666666667) internal successors, (1867), 6 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:27,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:25:27,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 687 [2022-12-13 19:25:27,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:25:33,085 INFO L130 PetriNetUnfolder]: 60117/92652 cut-off events. [2022-12-13 19:25:33,086 INFO L131 PetriNetUnfolder]: For 65163/65163 co-relation queries the response was YES. [2022-12-13 19:25:33,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262672 conditions, 92652 events. 60117/92652 cut-off events. For 65163/65163 co-relation queries the response was YES. Maximal size of possible extension queue 3948. Compared 785456 event pairs, 1587 based on Foata normal form. 8363/91832 useless extension candidates. Maximal degree in co-relation 262660. Up to 59851 conditions per place. [2022-12-13 19:25:33,611 INFO L137 encePairwiseOnDemand]: 684/687 looper letters, 194 selfloop transitions, 4 changer transitions 0/209 dead transitions. [2022-12-13 19:25:33,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 209 transitions, 1135 flow [2022-12-13 19:25:33,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 19:25:33,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-13 19:25:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2027 transitions. [2022-12-13 19:25:33,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.49175157690441534 [2022-12-13 19:25:33,615 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2027 transitions. [2022-12-13 19:25:33,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2027 transitions. [2022-12-13 19:25:33,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:25:33,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2027 transitions. [2022-12-13 19:25:33,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 337.8333333333333) internal successors, (2027), 6 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:33,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 687.0) internal successors, (4809), 7 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:33,622 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 687.0) internal successors, (4809), 7 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:33,622 INFO L175 Difference]: Start difference. First operand has 116 places, 121 transitions, 422 flow. Second operand 6 states and 2027 transitions. [2022-12-13 19:25:33,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 209 transitions, 1135 flow [2022-12-13 19:25:33,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 209 transitions, 1128 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-12-13 19:25:33,666 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 324 flow [2022-12-13 19:25:33,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=324, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2022-12-13 19:25:33,666 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -17 predicate places. [2022-12-13 19:25:33,666 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 324 flow [2022-12-13 19:25:33,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 311.1666666666667) internal successors, (1867), 6 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:33,667 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:25:33,667 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:25:33,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 19:25:33,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 19:25:33,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:25:33,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:25:33,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1438764806, now seen corresponding path program 1 times [2022-12-13 19:25:33,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:25:33,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904130] [2022-12-13 19:25:33,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:25:33,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:25:33,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:25:34,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:25:34,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:25:34,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904130] [2022-12-13 19:25:34,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904130] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:25:34,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:25:34,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 19:25:34,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644263040] [2022-12-13 19:25:34,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:25:34,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 19:25:34,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:25:34,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 19:25:34,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 19:25:34,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 687 [2022-12-13 19:25:34,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 297.8333333333333) internal successors, (1787), 6 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:34,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:25:34,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 687 [2022-12-13 19:25:34,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:25:41,703 INFO L130 PetriNetUnfolder]: 79695/117624 cut-off events. [2022-12-13 19:25:41,704 INFO L131 PetriNetUnfolder]: For 118909/119121 co-relation queries the response was YES. [2022-12-13 19:25:41,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328248 conditions, 117624 events. 79695/117624 cut-off events. For 118909/119121 co-relation queries the response was YES. Maximal size of possible extension queue 4888. Compared 960197 event pairs, 13645 based on Foata normal form. 732/108112 useless extension candidates. Maximal degree in co-relation 328236. Up to 60439 conditions per place. [2022-12-13 19:25:42,373 INFO L137 encePairwiseOnDemand]: 663/687 looper letters, 284 selfloop transitions, 51 changer transitions 0/346 dead transitions. [2022-12-13 19:25:42,373 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 346 transitions, 1842 flow [2022-12-13 19:25:42,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 19:25:42,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-13 19:25:42,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2999 transitions. [2022-12-13 19:25:42,377 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.48503962477761603 [2022-12-13 19:25:42,377 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2999 transitions. [2022-12-13 19:25:42,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2999 transitions. [2022-12-13 19:25:42,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:25:42,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2999 transitions. [2022-12-13 19:25:42,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 333.22222222222223) internal successors, (2999), 9 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:42,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 687.0) internal successors, (6870), 10 states have internal predecessors, (6870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:42,386 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 687.0) internal successors, (6870), 10 states have internal predecessors, (6870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:42,386 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 324 flow. Second operand 9 states and 2999 transitions. [2022-12-13 19:25:42,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 346 transitions, 1842 flow [2022-12-13 19:25:42,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 346 transitions, 1797 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-12-13 19:25:42,435 INFO L231 Difference]: Finished difference. Result has 104 places, 124 transitions, 769 flow [2022-12-13 19:25:42,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=769, PETRI_PLACES=104, PETRI_TRANSITIONS=124} [2022-12-13 19:25:42,436 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -5 predicate places. [2022-12-13 19:25:42,436 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 124 transitions, 769 flow [2022-12-13 19:25:42,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 297.8333333333333) internal successors, (1787), 6 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:42,437 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:25:42,437 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:25:42,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 19:25:42,437 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:25:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:25:42,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1438764692, now seen corresponding path program 1 times [2022-12-13 19:25:42,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:25:42,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746225212] [2022-12-13 19:25:42,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:25:42,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:25:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:25:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:25:42,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:25:42,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746225212] [2022-12-13 19:25:42,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746225212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:25:42,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 19:25:42,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 19:25:42,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857606914] [2022-12-13 19:25:42,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:25:42,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 19:25:42,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:25:42,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 19:25:42,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 19:25:42,534 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 687 [2022-12-13 19:25:42,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 124 transitions, 769 flow. Second operand has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:42,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:25:42,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 687 [2022-12-13 19:25:42,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-13 19:25:54,497 INFO L130 PetriNetUnfolder]: 105938/161019 cut-off events. [2022-12-13 19:25:54,497 INFO L131 PetriNetUnfolder]: For 332940/334002 co-relation queries the response was YES. [2022-12-13 19:25:54,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535778 conditions, 161019 events. 105938/161019 cut-off events. For 332940/334002 co-relation queries the response was YES. Maximal size of possible extension queue 6639. Compared 1432757 event pairs, 37008 based on Foata normal form. 4586/159626 useless extension candidates. Maximal degree in co-relation 535761. Up to 83481 conditions per place. [2022-12-13 19:25:55,510 INFO L137 encePairwiseOnDemand]: 667/687 looper letters, 154 selfloop transitions, 46 changer transitions 0/211 dead transitions. [2022-12-13 19:25:55,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 211 transitions, 1683 flow [2022-12-13 19:25:55,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 19:25:55,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-13 19:25:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1027 transitions. [2022-12-13 19:25:55,513 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4983017952450267 [2022-12-13 19:25:55,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1027 transitions. [2022-12-13 19:25:55,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1027 transitions. [2022-12-13 19:25:55,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-12-13 19:25:55,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1027 transitions. [2022-12-13 19:25:55,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 342.3333333333333) internal successors, (1027), 3 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:55,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:55,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 687.0) internal successors, (2748), 4 states have internal predecessors, (2748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:55,518 INFO L175 Difference]: Start difference. First operand has 104 places, 124 transitions, 769 flow. Second operand 3 states and 1027 transitions. [2022-12-13 19:25:55,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 211 transitions, 1683 flow [2022-12-13 19:25:56,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 211 transitions, 1639 flow, removed 6 selfloop flow, removed 2 redundant places. [2022-12-13 19:25:56,793 INFO L231 Difference]: Finished difference. Result has 106 places, 162 transitions, 1312 flow [2022-12-13 19:25:56,793 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=687, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1312, PETRI_PLACES=106, PETRI_TRANSITIONS=162} [2022-12-13 19:25:56,794 INFO L288 CegarLoopForPetriNet]: 109 programPoint places, -3 predicate places. [2022-12-13 19:25:56,794 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 162 transitions, 1312 flow [2022-12-13 19:25:56,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.6666666666667) internal successors, (920), 3 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:56,794 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-12-13 19:25:56,794 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 19:25:56,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 19:25:56,794 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2022-12-13 19:25:56,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 19:25:56,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1062144930, now seen corresponding path program 1 times [2022-12-13 19:25:56,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 19:25:56,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633604201] [2022-12-13 19:25:56,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:25:56,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 19:25:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:25:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:25:56,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 19:25:56,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633604201] [2022-12-13 19:25:56,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633604201] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 19:25:56,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16319012] [2022-12-13 19:25:56,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 19:25:56,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 19:25:56,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 19:25:56,907 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 19:25:56,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f60a049c-ac75-4c7d-b05c-06bd9a0486e1/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 19:25:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 19:25:56,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 19:25:56,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 19:25:57,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 121 [2022-12-13 19:25:57,039 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-13 19:25:57,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 121 treesize of output 123 [2022-12-13 19:25:57,083 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 19:25:57,104 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-12-13 19:25:57,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 19:25:57,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 19:25:57,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16319012] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 19:25:57,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 19:25:57,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 7 [2022-12-13 19:25:57,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883556983] [2022-12-13 19:25:57,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 19:25:57,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 19:25:57,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 19:25:57,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 19:25:57,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-13 19:25:57,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 300 out of 687 [2022-12-13 19:25:57,197 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 162 transitions, 1312 flow. Second operand has 5 states, 5 states have (on average 302.6) internal successors, (1513), 5 states have internal predecessors, (1513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 19:25:57,197 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-13 19:25:57,197 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 300 of 687 [2022-12-13 19:25:57,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand