./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro --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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- 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-8393723 [2022-11-18 19:48:38,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:48:38,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:48:38,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:48:38,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:48:38,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:48:38,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:48:38,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:48:38,193 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:48:38,201 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:48:38,202 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:48:38,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:48:38,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:48:38,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:48:38,206 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:48:38,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:48:38,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:48:38,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:48:38,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:48:38,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:48:38,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:48:38,226 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:48:38,230 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:48:38,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:48:38,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:48:38,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:48:38,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:48:38,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:48:38,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:48:38,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:48:38,243 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:48:38,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:48:38,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:48:38,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:48:38,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:48:38,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:48:38,251 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:48:38,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:48:38,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:48:38,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:48:38,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:48:38,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:48:38,303 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:48:38,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:48:38,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:48:38,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:48:38,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:48:38,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:48:38,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:48:38,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:48:38,306 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:48:38,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:48:38,308 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:48:38,308 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:48:38,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:48:38,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:48:38,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:48:38,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:48:38,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:48:38,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:48:38,309 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:48:38,309 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:48:38,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:48:38,310 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:48:38,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:48:38,310 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:48:38,310 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:48:38,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:48:38,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:48:38,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:48:38,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:48:38,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:48:38,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:48:38,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:48:38,312 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:48:38,313 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:48:38,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:48:38,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2022-11-18 19:48:38,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:48:38,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:48:38,706 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:48:38,708 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:48:38,709 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:48:38,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2022-11-18 19:48:38,808 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/data/4e9d7c81e/bf197271192448318a124dff92a58355/FLAG503e2fd05 [2022-11-18 19:48:39,515 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:48:39,515 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2022-11-18 19:48:39,531 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/data/4e9d7c81e/bf197271192448318a124dff92a58355/FLAG503e2fd05 [2022-11-18 19:48:39,755 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/data/4e9d7c81e/bf197271192448318a124dff92a58355 [2022-11-18 19:48:39,757 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:48:39,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:48:39,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:48:39,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:48:39,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:48:39,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:48:39" (1/1) ... [2022-11-18 19:48:39,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fef1a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:39, skipping insertion in model container [2022-11-18 19:48:39,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:48:39" (1/1) ... [2022-11-18 19:48:39,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:48:39,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:48:40,325 WARN L234 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_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2022-11-18 19:48:40,332 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:48:40,343 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:48:40,402 WARN L234 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_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i[30287,30300] [2022-11-18 19:48:40,405 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:48:40,447 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:48:40,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40 WrapperNode [2022-11-18 19:48:40,448 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:48:40,449 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:48:40,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:48:40,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:48:40,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,504 INFO L138 Inliner]: procedures = 167, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 22 [2022-11-18 19:48:40,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:48:40,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:48:40,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:48:40,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:48:40,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,530 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:48:40,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:48:40,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:48:40,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:48:40,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (1/1) ... [2022-11-18 19:48:40,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:48:40,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:40,571 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:48:40,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:48:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2022-11-18 19:48:40,627 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2022-11-18 19:48:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:48:40,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:48:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:48:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:48:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:48:40,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:48:40,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:48:40,630 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:48:40,824 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:48:40,826 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:48:41,131 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:48:41,139 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:48:41,155 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:48:41,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:48:41 BoogieIcfgContainer [2022-11-18 19:48:41,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:48:41,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:48:41,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:48:41,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:48:41,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:48:39" (1/3) ... [2022-11-18 19:48:41,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fb26b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:48:41, skipping insertion in model container [2022-11-18 19:48:41,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:48:40" (2/3) ... [2022-11-18 19:48:41,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34fb26b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:48:41, skipping insertion in model container [2022-11-18 19:48:41,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:48:41" (3/3) ... [2022-11-18 19:48:41,183 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2022-11-18 19:48:41,194 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:48:41,210 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:48:41,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 19:48:41,210 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:48:41,378 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:48:41,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 83 transitions, 171 flow [2022-11-18 19:48:41,481 INFO L130 PetriNetUnfolder]: 10/94 cut-off events. [2022-11-18 19:48:41,482 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:48:41,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 94 events. 10/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 129 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2022-11-18 19:48:41,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 83 transitions, 171 flow [2022-11-18 19:48:41,494 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 83 transitions, 171 flow [2022-11-18 19:48:41,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:48:41,513 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;@57e42a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:48:41,513 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-11-18 19:48:41,528 INFO L130 PetriNetUnfolder]: 2/43 cut-off events. [2022-11-18 19:48:41,528 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 19:48:41,528 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:41,529 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:41,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2022-11-18 19:48:41,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash -268632177, now seen corresponding path program 1 times [2022-11-18 19:48:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:41,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539640238] [2022-11-18 19:48:41,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:48:41,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:48:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:48:41,799 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:48:41,802 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:48:41,804 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2022-11-18 19:48:41,806 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2022-11-18 19:48:41,807 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2022-11-18 19:48:41,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2022-11-18 19:48:41,808 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2022-11-18 19:48:41,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2022-11-18 19:48:41,810 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2022-11-18 19:48:41,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2022-11-18 19:48:41,811 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2022-11-18 19:48:41,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2022-11-18 19:48:41,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2022-11-18 19:48:41,812 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2022-11-18 19:48:41,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2022-11-18 19:48:41,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2022-11-18 19:48:41,813 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2022-11-18 19:48:41,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2022-11-18 19:48:41,814 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2022-11-18 19:48:41,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:48:41,815 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-18 19:48:41,833 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:48:41,833 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-11-18 19:48:42,004 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:48:42,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 139 transitions, 290 flow [2022-11-18 19:48:42,151 INFO L130 PetriNetUnfolder]: 19/163 cut-off events. [2022-11-18 19:48:42,151 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:48:42,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 163 events. 19/163 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 402 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 123. Up to 6 conditions per place. [2022-11-18 19:48:42,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 139 transitions, 290 flow [2022-11-18 19:48:42,165 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 139 transitions, 290 flow [2022-11-18 19:48:42,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:48:42,171 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;@57e42a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:48:42,171 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-18 19:48:42,194 INFO L130 PetriNetUnfolder]: 4/69 cut-off events. [2022-11-18 19:48:42,194 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:48:42,194 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:42,194 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:42,199 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:48:42,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:42,200 INFO L85 PathProgramCache]: Analyzing trace with hash -208344856, now seen corresponding path program 1 times [2022-11-18 19:48:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:42,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495872940] [2022-11-18 19:48:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:42,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:42,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:42,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495872940] [2022-11-18 19:48:42,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495872940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:42,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:42,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:48:42,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410994046] [2022-11-18 19:48:42,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:42,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:42,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:42,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:42,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:42,505 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 139 [2022-11-18 19:48:42,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 139 transitions, 290 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:42,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:42,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 139 [2022-11-18 19:48:42,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:42,692 INFO L130 PetriNetUnfolder]: 57/495 cut-off events. [2022-11-18 19:48:42,692 INFO L131 PetriNetUnfolder]: For 78/78 co-relation queries the response was YES. [2022-11-18 19:48:42,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 495 events. 57/495 cut-off events. For 78/78 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2737 event pairs, 13 based on Foata normal form. 82/463 useless extension candidates. Maximal degree in co-relation 139. Up to 46 conditions per place. [2022-11-18 19:48:42,708 INFO L137 encePairwiseOnDemand]: 125/139 looper letters, 27 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-11-18 19:48:42,708 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 134 transitions, 343 flow [2022-11-18 19:48:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:42,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:48:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 381 transitions. [2022-11-18 19:48:42,738 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9136690647482014 [2022-11-18 19:48:42,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 381 transitions. [2022-11-18 19:48:42,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 381 transitions. [2022-11-18 19:48:42,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:42,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 381 transitions. [2022-11-18 19:48:42,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:42,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:42,761 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:42,764 INFO L175 Difference]: Start difference. First operand has 127 places, 139 transitions, 290 flow. Second operand 3 states and 381 transitions. [2022-11-18 19:48:42,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 134 transitions, 343 flow [2022-11-18 19:48:42,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 134 transitions, 341 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 19:48:42,773 INFO L231 Difference]: Finished difference. Result has 122 places, 123 transitions, 268 flow [2022-11-18 19:48:42,776 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=122, PETRI_TRANSITIONS=123} [2022-11-18 19:48:42,782 INFO L288 CegarLoopForPetriNet]: 127 programPoint places, -5 predicate places. [2022-11-18 19:48:42,782 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 123 transitions, 268 flow [2022-11-18 19:48:42,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:42,783 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:42,784 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:42,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:48:42,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2022-11-18 19:48:42,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1014468048, now seen corresponding path program 1 times [2022-11-18 19:48:42,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:42,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249168438] [2022-11-18 19:48:42,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:42,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:42,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:48:42,842 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:48:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:48:42,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:48:42,862 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:48:42,862 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2022-11-18 19:48:42,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2022-11-18 19:48:42,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2022-11-18 19:48:42,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2022-11-18 19:48:42,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2022-11-18 19:48:42,863 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2022-11-18 19:48:42,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2022-11-18 19:48:42,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2022-11-18 19:48:42,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2022-11-18 19:48:42,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2022-11-18 19:48:42,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2022-11-18 19:48:42,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2022-11-18 19:48:42,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2022-11-18 19:48:42,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2022-11-18 19:48:42,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2022-11-18 19:48:42,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2022-11-18 19:48:42,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2022-11-18 19:48:42,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2022-11-18 19:48:42,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2022-11-18 19:48:42,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2022-11-18 19:48:42,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2022-11-18 19:48:42,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2022-11-18 19:48:42,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2022-11-18 19:48:42,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2022-11-18 19:48:42,868 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2022-11-18 19:48:42,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:48:42,869 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-18 19:48:42,870 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:48:42,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-11-18 19:48:42,962 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:48:42,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 195 transitions, 411 flow [2022-11-18 19:48:43,026 INFO L130 PetriNetUnfolder]: 28/232 cut-off events. [2022-11-18 19:48:43,028 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-18 19:48:43,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 232 events. 28/232 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 742 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 178. Up to 8 conditions per place. [2022-11-18 19:48:43,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 195 transitions, 411 flow [2022-11-18 19:48:43,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 195 transitions, 411 flow [2022-11-18 19:48:43,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:48:43,045 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;@57e42a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:48:43,045 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2022-11-18 19:48:43,056 INFO L130 PetriNetUnfolder]: 4/72 cut-off events. [2022-11-18 19:48:43,056 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 19:48:43,056 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:43,056 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:43,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 19:48:43,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:43,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1869928756, now seen corresponding path program 1 times [2022-11-18 19:48:43,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:43,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455275002] [2022-11-18 19:48:43,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:43,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:43,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:43,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:43,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455275002] [2022-11-18 19:48:43,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455275002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:43,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:43,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:48:43,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433034734] [2022-11-18 19:48:43,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:43,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:43,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:43,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:43,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:43,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 195 [2022-11-18 19:48:43,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 195 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:43,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:43,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 195 [2022-11-18 19:48:43,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:43,475 INFO L130 PetriNetUnfolder]: 107/875 cut-off events. [2022-11-18 19:48:43,475 INFO L131 PetriNetUnfolder]: For 232/232 co-relation queries the response was YES. [2022-11-18 19:48:43,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 875 events. 107/875 cut-off events. For 232/232 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 5930 event pairs, 26 based on Foata normal form. 148/807 useless extension candidates. Maximal degree in co-relation 641. Up to 75 conditions per place. [2022-11-18 19:48:43,495 INFO L137 encePairwiseOnDemand]: 177/195 looper letters, 29 selfloop transitions, 2 changer transitions 0/186 dead transitions. [2022-11-18 19:48:43,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 186 transitions, 467 flow [2022-11-18 19:48:43,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:43,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:48:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2022-11-18 19:48:43,499 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9247863247863248 [2022-11-18 19:48:43,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2022-11-18 19:48:43,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2022-11-18 19:48:43,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:43,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2022-11-18 19:48:43,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:43,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:43,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:43,507 INFO L175 Difference]: Start difference. First operand has 177 places, 195 transitions, 411 flow. Second operand 3 states and 541 transitions. [2022-11-18 19:48:43,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 186 transitions, 467 flow [2022-11-18 19:48:43,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 186 transitions, 459 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-18 19:48:43,523 INFO L231 Difference]: Finished difference. Result has 171 places, 174 transitions, 375 flow [2022-11-18 19:48:43,524 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=361, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=375, PETRI_PLACES=171, PETRI_TRANSITIONS=174} [2022-11-18 19:48:43,525 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, -6 predicate places. [2022-11-18 19:48:43,525 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 174 transitions, 375 flow [2022-11-18 19:48:43,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:43,527 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:43,528 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:43,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:48:43,533 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 19:48:43,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:43,535 INFO L85 PathProgramCache]: Analyzing trace with hash -498853735, now seen corresponding path program 1 times [2022-11-18 19:48:43,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:43,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267928659] [2022-11-18 19:48:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:43,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:43,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:43,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:43,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267928659] [2022-11-18 19:48:43,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267928659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:43,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:43,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:48:43,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088252764] [2022-11-18 19:48:43,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:43,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:48:43,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:43,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:48:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:48:43,702 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 195 [2022-11-18 19:48:43,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 174 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 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) [2022-11-18 19:48:43,703 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:43,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 195 [2022-11-18 19:48:43,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:43,969 INFO L130 PetriNetUnfolder]: 107/664 cut-off events. [2022-11-18 19:48:43,970 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2022-11-18 19:48:43,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1053 conditions, 664 events. 107/664 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4295 event pairs, 36 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 596. Up to 100 conditions per place. [2022-11-18 19:48:43,985 INFO L137 encePairwiseOnDemand]: 189/195 looper letters, 39 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-11-18 19:48:43,985 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 193 transitions, 529 flow [2022-11-18 19:48:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:43,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:48:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 820 transitions. [2022-11-18 19:48:43,988 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.841025641025641 [2022-11-18 19:48:43,988 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 820 transitions. [2022-11-18 19:48:43,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 820 transitions. [2022-11-18 19:48:43,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:43,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 820 transitions. [2022-11-18 19:48:43,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 164.0) internal successors, (820), 5 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:43,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:43,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 195.0) internal successors, (1170), 6 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:43,996 INFO L175 Difference]: Start difference. First operand has 171 places, 174 transitions, 375 flow. Second operand 5 states and 820 transitions. [2022-11-18 19:48:43,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 193 transitions, 529 flow [2022-11-18 19:48:43,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 193 transitions, 527 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:48:44,002 INFO L231 Difference]: Finished difference. Result has 177 places, 176 transitions, 399 flow [2022-11-18 19:48:44,003 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=177, PETRI_TRANSITIONS=176} [2022-11-18 19:48:44,004 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 0 predicate places. [2022-11-18 19:48:44,004 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 176 transitions, 399 flow [2022-11-18 19:48:44,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.25) internal successors, (629), 4 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) [2022-11-18 19:48:44,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:44,005 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:44,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:48:44,005 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 19:48:44,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:44,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1084476203, now seen corresponding path program 1 times [2022-11-18 19:48:44,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:44,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688616744] [2022-11-18 19:48:44,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:44,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:44,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:48:44,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:44,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688616744] [2022-11-18 19:48:44,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688616744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:44,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:44,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:48:44,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603172192] [2022-11-18 19:48:44,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:44,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:44,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:44,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:44,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:44,057 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 195 [2022-11-18 19:48:44,058 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 176 transitions, 399 flow. Second operand has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:44,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:44,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 195 [2022-11-18 19:48:44,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:44,279 INFO L130 PetriNetUnfolder]: 64/587 cut-off events. [2022-11-18 19:48:44,280 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2022-11-18 19:48:44,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 587 events. 64/587 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3332 event pairs, 13 based on Foata normal form. 0/455 useless extension candidates. Maximal degree in co-relation 731. Up to 47 conditions per place. [2022-11-18 19:48:44,304 INFO L137 encePairwiseOnDemand]: 191/195 looper letters, 28 selfloop transitions, 2 changer transitions 0/188 dead transitions. [2022-11-18 19:48:44,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 188 transitions, 488 flow [2022-11-18 19:48:44,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:44,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:48:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2022-11-18 19:48:44,307 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8752136752136752 [2022-11-18 19:48:44,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2022-11-18 19:48:44,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2022-11-18 19:48:44,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:44,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2022-11-18 19:48:44,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:44,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:44,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 195.0) internal successors, (780), 4 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:44,312 INFO L175 Difference]: Start difference. First operand has 177 places, 176 transitions, 399 flow. Second operand 3 states and 512 transitions. [2022-11-18 19:48:44,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 188 transitions, 488 flow [2022-11-18 19:48:44,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 188 transitions, 484 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:48:44,317 INFO L231 Difference]: Finished difference. Result has 178 places, 177 transitions, 409 flow [2022-11-18 19:48:44,317 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=409, PETRI_PLACES=178, PETRI_TRANSITIONS=177} [2022-11-18 19:48:44,318 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 1 predicate places. [2022-11-18 19:48:44,318 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 177 transitions, 409 flow [2022-11-18 19:48:44,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:44,319 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:44,319 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:44,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:48:44,320 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 19:48:44,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:44,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1638874304, now seen corresponding path program 1 times [2022-11-18 19:48:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:44,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11911516] [2022-11-18 19:48:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:44,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:44,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:44,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:44,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11911516] [2022-11-18 19:48:44,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11911516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:44,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:44,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:48:44,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873918947] [2022-11-18 19:48:44,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:44,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:44,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:44,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:44,416 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 195 [2022-11-18 19:48:44,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 177 transitions, 409 flow. Second operand has 5 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:44,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:44,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 195 [2022-11-18 19:48:44,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:44,781 INFO L130 PetriNetUnfolder]: 177/801 cut-off events. [2022-11-18 19:48:44,781 INFO L131 PetriNetUnfolder]: For 429/429 co-relation queries the response was YES. [2022-11-18 19:48:44,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 801 events. 177/801 cut-off events. For 429/429 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6188 event pairs, 44 based on Foata normal form. 0/647 useless extension candidates. Maximal degree in co-relation 1447. Up to 131 conditions per place. [2022-11-18 19:48:44,813 INFO L137 encePairwiseOnDemand]: 186/195 looper letters, 74 selfloop transitions, 10 changer transitions 0/230 dead transitions. [2022-11-18 19:48:44,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 230 transitions, 756 flow [2022-11-18 19:48:44,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:48:44,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:48:44,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1277 transitions. [2022-11-18 19:48:44,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8185897435897436 [2022-11-18 19:48:44,817 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1277 transitions. [2022-11-18 19:48:44,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1277 transitions. [2022-11-18 19:48:44,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:44,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1277 transitions. [2022-11-18 19:48:44,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.625) internal successors, (1277), 8 states have internal predecessors, (1277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:44,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:44,827 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 195.0) internal successors, (1755), 9 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:44,827 INFO L175 Difference]: Start difference. First operand has 178 places, 177 transitions, 409 flow. Second operand 8 states and 1277 transitions. [2022-11-18 19:48:44,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 230 transitions, 756 flow [2022-11-18 19:48:44,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 230 transitions, 754 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:48:44,836 INFO L231 Difference]: Finished difference. Result has 188 places, 184 transitions, 470 flow [2022-11-18 19:48:44,837 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=195, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=470, PETRI_PLACES=188, PETRI_TRANSITIONS=184} [2022-11-18 19:48:44,839 INFO L288 CegarLoopForPetriNet]: 177 programPoint places, 11 predicate places. [2022-11-18 19:48:44,840 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 184 transitions, 470 flow [2022-11-18 19:48:44,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 151.4) internal successors, (757), 5 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:44,841 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:44,841 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:44,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:48:44,842 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 30 more)] === [2022-11-18 19:48:44,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:44,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1518656956, now seen corresponding path program 1 times [2022-11-18 19:48:44,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:44,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365843869] [2022-11-18 19:48:44,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:44,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:48:44,878 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:48:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:48:44,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:48:44,903 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:48:44,903 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2022-11-18 19:48:44,903 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 33 remaining) [2022-11-18 19:48:44,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 33 remaining) [2022-11-18 19:48:44,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 33 remaining) [2022-11-18 19:48:44,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 33 remaining) [2022-11-18 19:48:44,904 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 33 remaining) [2022-11-18 19:48:44,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 33 remaining) [2022-11-18 19:48:44,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 33 remaining) [2022-11-18 19:48:44,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 33 remaining) [2022-11-18 19:48:44,905 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 33 remaining) [2022-11-18 19:48:44,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 33 remaining) [2022-11-18 19:48:44,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 33 remaining) [2022-11-18 19:48:44,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 33 remaining) [2022-11-18 19:48:44,906 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 33 remaining) [2022-11-18 19:48:44,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 33 remaining) [2022-11-18 19:48:44,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 33 remaining) [2022-11-18 19:48:44,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 33 remaining) [2022-11-18 19:48:44,907 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 33 remaining) [2022-11-18 19:48:44,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 33 remaining) [2022-11-18 19:48:44,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 33 remaining) [2022-11-18 19:48:44,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 33 remaining) [2022-11-18 19:48:44,908 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 33 remaining) [2022-11-18 19:48:44,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 33 remaining) [2022-11-18 19:48:44,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 33 remaining) [2022-11-18 19:48:44,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 33 remaining) [2022-11-18 19:48:44,909 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 33 remaining) [2022-11-18 19:48:44,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 33 remaining) [2022-11-18 19:48:44,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 33 remaining) [2022-11-18 19:48:44,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 33 remaining) [2022-11-18 19:48:44,910 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 33 remaining) [2022-11-18 19:48:44,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 33 remaining) [2022-11-18 19:48:44,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 33 remaining) [2022-11-18 19:48:44,911 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 33 remaining) [2022-11-18 19:48:44,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:48:44,912 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-11-18 19:48:44,912 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:48:44,913 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-11-18 19:48:44,989 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:48:44,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 251 transitions, 534 flow [2022-11-18 19:48:45,054 INFO L130 PetriNetUnfolder]: 37/301 cut-off events. [2022-11-18 19:48:45,054 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-11-18 19:48:45,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 301 events. 37/301 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1058 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 240. Up to 10 conditions per place. [2022-11-18 19:48:45,061 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 251 transitions, 534 flow [2022-11-18 19:48:45,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 227 places, 251 transitions, 534 flow [2022-11-18 19:48:45,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:48:45,077 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;@57e42a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:48:45,077 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-18 19:48:45,085 INFO L130 PetriNetUnfolder]: 4/69 cut-off events. [2022-11-18 19:48:45,085 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:48:45,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:45,086 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:45,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:45,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:45,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1160345681, now seen corresponding path program 1 times [2022-11-18 19:48:45,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:45,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047651112] [2022-11-18 19:48:45,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:45,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:45,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:45,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047651112] [2022-11-18 19:48:45,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047651112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:45,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:45,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:48:45,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491951597] [2022-11-18 19:48:45,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:45,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:45,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:45,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:45,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:45,153 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 251 [2022-11-18 19:48:45,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 251 transitions, 534 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:45,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:45,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 251 [2022-11-18 19:48:45,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:45,565 INFO L130 PetriNetUnfolder]: 157/1255 cut-off events. [2022-11-18 19:48:45,565 INFO L131 PetriNetUnfolder]: For 487/487 co-relation queries the response was YES. [2022-11-18 19:48:45,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1748 conditions, 1255 events. 157/1255 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 9458 event pairs, 39 based on Foata normal form. 288/1225 useless extension candidates. Maximal degree in co-relation 1167. Up to 104 conditions per place. [2022-11-18 19:48:45,602 INFO L137 encePairwiseOnDemand]: 229/251 looper letters, 31 selfloop transitions, 2 changer transitions 0/238 dead transitions. [2022-11-18 19:48:45,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 238 transitions, 595 flow [2022-11-18 19:48:45,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:45,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:48:45,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 701 transitions. [2022-11-18 19:48:45,605 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9309428950863213 [2022-11-18 19:48:45,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 701 transitions. [2022-11-18 19:48:45,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 701 transitions. [2022-11-18 19:48:45,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:45,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 701 transitions. [2022-11-18 19:48:45,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.66666666666666) internal successors, (701), 3 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:45,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:45,611 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:45,611 INFO L175 Difference]: Start difference. First operand has 227 places, 251 transitions, 534 flow. Second operand 3 states and 701 transitions. [2022-11-18 19:48:45,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 238 transitions, 595 flow [2022-11-18 19:48:45,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 238 transitions, 577 flow, removed 9 selfloop flow, removed 0 redundant places. [2022-11-18 19:48:45,617 INFO L231 Difference]: Finished difference. Result has 220 places, 225 transitions, 482 flow [2022-11-18 19:48:45,617 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=482, PETRI_PLACES=220, PETRI_TRANSITIONS=225} [2022-11-18 19:48:45,618 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, -7 predicate places. [2022-11-18 19:48:45,618 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 225 transitions, 482 flow [2022-11-18 19:48:45,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:45,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:45,619 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:45,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:48:45,620 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:45,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:45,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1510675376, now seen corresponding path program 1 times [2022-11-18 19:48:45,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:45,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599348490] [2022-11-18 19:48:45,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:45,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:45,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:45,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:45,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599348490] [2022-11-18 19:48:45,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599348490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:45,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:45,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:48:45,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519588164] [2022-11-18 19:48:45,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:45,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:48:45,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:45,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:48:45,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:48:45,690 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 251 [2022-11-18 19:48:45,691 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 225 transitions, 482 flow. Second operand has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:45,691 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:45,692 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 251 [2022-11-18 19:48:45,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:46,083 INFO L130 PetriNetUnfolder]: 157/940 cut-off events. [2022-11-18 19:48:46,083 INFO L131 PetriNetUnfolder]: For 301/301 co-relation queries the response was YES. [2022-11-18 19:48:46,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 940 events. 157/940 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 6710 event pairs, 54 based on Foata normal form. 0/714 useless extension candidates. Maximal degree in co-relation 1040. Up to 139 conditions per place. [2022-11-18 19:48:46,115 INFO L137 encePairwiseOnDemand]: 245/251 looper letters, 43 selfloop transitions, 4 changer transitions 0/247 dead transitions. [2022-11-18 19:48:46,115 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 247 transitions, 665 flow [2022-11-18 19:48:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:46,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:48:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1074 transitions. [2022-11-18 19:48:46,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8557768924302789 [2022-11-18 19:48:46,119 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1074 transitions. [2022-11-18 19:48:46,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1074 transitions. [2022-11-18 19:48:46,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:46,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1074 transitions. [2022-11-18 19:48:46,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.8) internal successors, (1074), 5 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:46,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:46,127 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:46,127 INFO L175 Difference]: Start difference. First operand has 220 places, 225 transitions, 482 flow. Second operand 5 states and 1074 transitions. [2022-11-18 19:48:46,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 247 transitions, 665 flow [2022-11-18 19:48:46,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 247 transitions, 663 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:48:46,134 INFO L231 Difference]: Finished difference. Result has 226 places, 227 transitions, 506 flow [2022-11-18 19:48:46,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=506, PETRI_PLACES=226, PETRI_TRANSITIONS=227} [2022-11-18 19:48:46,137 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, -1 predicate places. [2022-11-18 19:48:46,138 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 227 transitions, 506 flow [2022-11-18 19:48:46,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:46,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:46,139 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:46,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:48:46,140 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:46,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:46,140 INFO L85 PathProgramCache]: Analyzing trace with hash 429922252, now seen corresponding path program 1 times [2022-11-18 19:48:46,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:46,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323656817] [2022-11-18 19:48:46,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:46,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:48:46,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:46,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323656817] [2022-11-18 19:48:46,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323656817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:46,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:46,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:48:46,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149142746] [2022-11-18 19:48:46,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:46,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:46,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:46,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:46,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:46,211 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 251 [2022-11-18 19:48:46,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 227 transitions, 506 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:46,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:46,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 251 [2022-11-18 19:48:46,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:46,574 INFO L130 PetriNetUnfolder]: 114/967 cut-off events. [2022-11-18 19:48:46,574 INFO L131 PetriNetUnfolder]: For 155/155 co-relation queries the response was YES. [2022-11-18 19:48:46,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1276 conditions, 967 events. 114/967 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 6560 event pairs, 26 based on Foata normal form. 0/733 useless extension candidates. Maximal degree in co-relation 1233. Up to 76 conditions per place. [2022-11-18 19:48:46,619 INFO L137 encePairwiseOnDemand]: 247/251 looper letters, 30 selfloop transitions, 2 changer transitions 0/240 dead transitions. [2022-11-18 19:48:46,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 240 transitions, 606 flow [2022-11-18 19:48:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:48:46,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2022-11-18 19:48:46,622 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8818061088977424 [2022-11-18 19:48:46,622 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2022-11-18 19:48:46,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2022-11-18 19:48:46,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:46,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2022-11-18 19:48:46,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:46,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:46,627 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:46,627 INFO L175 Difference]: Start difference. First operand has 226 places, 227 transitions, 506 flow. Second operand 3 states and 664 transitions. [2022-11-18 19:48:46,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 240 transitions, 606 flow [2022-11-18 19:48:46,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 240 transitions, 602 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:48:46,633 INFO L231 Difference]: Finished difference. Result has 227 places, 228 transitions, 516 flow [2022-11-18 19:48:46,634 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=516, PETRI_PLACES=227, PETRI_TRANSITIONS=228} [2022-11-18 19:48:46,634 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, 0 predicate places. [2022-11-18 19:48:46,635 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 228 transitions, 516 flow [2022-11-18 19:48:46,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:46,635 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:46,635 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:46,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:48:46,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:46,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:46,636 INFO L85 PathProgramCache]: Analyzing trace with hash 61076567, now seen corresponding path program 1 times [2022-11-18 19:48:46,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:46,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113891133] [2022-11-18 19:48:46,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:46,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:46,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:46,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:46,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113891133] [2022-11-18 19:48:46,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113891133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:46,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:46,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:48:46,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139599876] [2022-11-18 19:48:46,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:46,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:46,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:46,705 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 251 [2022-11-18 19:48:46,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 228 transitions, 516 flow. Second operand has 5 states, 5 states have (on average 201.4) internal successors, (1007), 5 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:46,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:46,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 251 [2022-11-18 19:48:46,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:47,241 INFO L130 PetriNetUnfolder]: 258/1092 cut-off events. [2022-11-18 19:48:47,242 INFO L131 PetriNetUnfolder]: For 636/636 co-relation queries the response was YES. [2022-11-18 19:48:47,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 1092 events. 258/1092 cut-off events. For 636/636 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 9213 event pairs, 66 based on Foata normal form. 0/881 useless extension candidates. Maximal degree in co-relation 2089. Up to 196 conditions per place. [2022-11-18 19:48:47,298 INFO L137 encePairwiseOnDemand]: 242/251 looper letters, 81 selfloop transitions, 10 changer transitions 0/287 dead transitions. [2022-11-18 19:48:47,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 287 transitions, 919 flow [2022-11-18 19:48:47,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:48:47,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:48:47,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1684 transitions. [2022-11-18 19:48:47,303 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8386454183266933 [2022-11-18 19:48:47,303 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1684 transitions. [2022-11-18 19:48:47,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1684 transitions. [2022-11-18 19:48:47,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:47,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1684 transitions. [2022-11-18 19:48:47,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 210.5) internal successors, (1684), 8 states have internal predecessors, (1684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:47,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 251.0) internal successors, (2259), 9 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:47,314 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 251.0) internal successors, (2259), 9 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:47,314 INFO L175 Difference]: Start difference. First operand has 227 places, 228 transitions, 516 flow. Second operand 8 states and 1684 transitions. [2022-11-18 19:48:47,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 287 transitions, 919 flow [2022-11-18 19:48:47,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 287 transitions, 917 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:48:47,322 INFO L231 Difference]: Finished difference. Result has 237 places, 235 transitions, 577 flow [2022-11-18 19:48:47,323 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=237, PETRI_TRANSITIONS=235} [2022-11-18 19:48:47,325 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, 10 predicate places. [2022-11-18 19:48:47,325 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 235 transitions, 577 flow [2022-11-18 19:48:47,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.4) internal successors, (1007), 5 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:47,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:47,326 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:47,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:48:47,326 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:47,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:47,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1893374556, now seen corresponding path program 1 times [2022-11-18 19:48:47,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:47,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429881609] [2022-11-18 19:48:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:47,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:47,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:47,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:47,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429881609] [2022-11-18 19:48:47,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429881609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:47,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:47,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:48:47,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194970921] [2022-11-18 19:48:47,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:47,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:47,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:47,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:47,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:47,434 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 251 [2022-11-18 19:48:47,435 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 235 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:47,435 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:47,435 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 251 [2022-11-18 19:48:47,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:48,014 INFO L130 PetriNetUnfolder]: 276/1146 cut-off events. [2022-11-18 19:48:48,015 INFO L131 PetriNetUnfolder]: For 794/794 co-relation queries the response was YES. [2022-11-18 19:48:48,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 1146 events. 276/1146 cut-off events. For 794/794 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9696 event pairs, 63 based on Foata normal form. 8/955 useless extension candidates. Maximal degree in co-relation 2355. Up to 214 conditions per place. [2022-11-18 19:48:48,071 INFO L137 encePairwiseOnDemand]: 243/251 looper letters, 65 selfloop transitions, 11 changer transitions 0/272 dead transitions. [2022-11-18 19:48:48,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 272 transitions, 874 flow [2022-11-18 19:48:48,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:48:48,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:48:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1266 transitions. [2022-11-18 19:48:48,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8406374501992032 [2022-11-18 19:48:48,076 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1266 transitions. [2022-11-18 19:48:48,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1266 transitions. [2022-11-18 19:48:48,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:48,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1266 transitions. [2022-11-18 19:48:48,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:48,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:48,086 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 251.0) internal successors, (1757), 7 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:48,086 INFO L175 Difference]: Start difference. First operand has 237 places, 235 transitions, 577 flow. Second operand 6 states and 1266 transitions. [2022-11-18 19:48:48,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 272 transitions, 874 flow [2022-11-18 19:48:48,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 272 transitions, 874 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:48:48,095 INFO L231 Difference]: Finished difference. Result has 246 places, 237 transitions, 635 flow [2022-11-18 19:48:48,096 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=635, PETRI_PLACES=246, PETRI_TRANSITIONS=237} [2022-11-18 19:48:48,096 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, 19 predicate places. [2022-11-18 19:48:48,097 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 237 transitions, 635 flow [2022-11-18 19:48:48,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:48,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:48,098 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:48,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:48:48,098 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:48,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1893406302, now seen corresponding path program 1 times [2022-11-18 19:48:48,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:48,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002698707] [2022-11-18 19:48:48,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:48,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:48,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:48,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:48,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002698707] [2022-11-18 19:48:48,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002698707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:48,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:48,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:48:48,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454031064] [2022-11-18 19:48:48,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:48,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:48:48,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:48:48,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:48:48,220 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 251 [2022-11-18 19:48:48,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 237 transitions, 635 flow. Second operand has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:48,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:48,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 251 [2022-11-18 19:48:48,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:49,028 INFO L130 PetriNetUnfolder]: 441/1519 cut-off events. [2022-11-18 19:48:49,029 INFO L131 PetriNetUnfolder]: For 1595/1595 co-relation queries the response was YES. [2022-11-18 19:48:49,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3986 conditions, 1519 events. 441/1519 cut-off events. For 1595/1595 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 13616 event pairs, 102 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 3804. Up to 367 conditions per place. [2022-11-18 19:48:49,119 INFO L137 encePairwiseOnDemand]: 239/251 looper letters, 121 selfloop transitions, 18 changer transitions 0/333 dead transitions. [2022-11-18 19:48:49,119 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 333 transitions, 1295 flow [2022-11-18 19:48:49,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:48:49,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:48:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2271 transitions. [2022-11-18 19:48:49,125 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8225280695400218 [2022-11-18 19:48:49,125 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2271 transitions. [2022-11-18 19:48:49,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2271 transitions. [2022-11-18 19:48:49,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:49,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2271 transitions. [2022-11-18 19:48:49,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 206.45454545454547) internal successors, (2271), 11 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:49,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 251.0) internal successors, (3012), 12 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:49,139 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 251.0) internal successors, (3012), 12 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:49,139 INFO L175 Difference]: Start difference. First operand has 246 places, 237 transitions, 635 flow. Second operand 11 states and 2271 transitions. [2022-11-18 19:48:49,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 333 transitions, 1295 flow [2022-11-18 19:48:49,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 333 transitions, 1285 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-18 19:48:49,149 INFO L231 Difference]: Finished difference. Result has 263 places, 250 transitions, 758 flow [2022-11-18 19:48:49,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=629, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=758, PETRI_PLACES=263, PETRI_TRANSITIONS=250} [2022-11-18 19:48:49,150 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, 36 predicate places. [2022-11-18 19:48:49,151 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 250 transitions, 758 flow [2022-11-18 19:48:49,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:49,152 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:49,152 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:49,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:48:49,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:49,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1433945798, now seen corresponding path program 1 times [2022-11-18 19:48:49,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:49,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972299834] [2022-11-18 19:48:49,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:49,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:49,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:49,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:49,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972299834] [2022-11-18 19:48:49,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972299834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:49,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:49,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:48:49,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789950052] [2022-11-18 19:48:49,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:49,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:48:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:49,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:48:49,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:48:49,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 251 [2022-11-18 19:48:49,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 250 transitions, 758 flow. Second operand has 7 states, 7 states have (on average 196.28571428571428) internal successors, (1374), 7 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) [2022-11-18 19:48:49,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:49,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 251 [2022-11-18 19:48:49,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:50,196 INFO L130 PetriNetUnfolder]: 527/1773 cut-off events. [2022-11-18 19:48:50,197 INFO L131 PetriNetUnfolder]: For 2245/2245 co-relation queries the response was YES. [2022-11-18 19:48:50,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5004 conditions, 1773 events. 527/1773 cut-off events. For 2245/2245 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 16108 event pairs, 102 based on Foata normal form. 24/1576 useless extension candidates. Maximal degree in co-relation 4814. Up to 445 conditions per place. [2022-11-18 19:48:50,299 INFO L137 encePairwiseOnDemand]: 239/251 looper letters, 109 selfloop transitions, 21 changer transitions 0/324 dead transitions. [2022-11-18 19:48:50,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 324 transitions, 1340 flow [2022-11-18 19:48:50,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:48:50,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:48:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1870 transitions. [2022-11-18 19:48:50,305 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8277999114652501 [2022-11-18 19:48:50,305 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1870 transitions. [2022-11-18 19:48:50,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1870 transitions. [2022-11-18 19:48:50,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:50,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1870 transitions. [2022-11-18 19:48:50,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 207.77777777777777) internal successors, (1870), 9 states have internal predecessors, (1870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:50,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 251.0) internal successors, (2510), 10 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:50,328 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 251.0) internal successors, (2510), 10 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:50,337 INFO L175 Difference]: Start difference. First operand has 263 places, 250 transitions, 758 flow. Second operand 9 states and 1870 transitions. [2022-11-18 19:48:50,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 324 transitions, 1340 flow [2022-11-18 19:48:50,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 324 transitions, 1338 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 19:48:50,350 INFO L231 Difference]: Finished difference. Result has 275 places, 255 transitions, 878 flow [2022-11-18 19:48:50,351 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=878, PETRI_PLACES=275, PETRI_TRANSITIONS=255} [2022-11-18 19:48:50,352 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, 48 predicate places. [2022-11-18 19:48:50,353 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 255 transitions, 878 flow [2022-11-18 19:48:50,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.28571428571428) internal successors, (1374), 7 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) [2022-11-18 19:48:50,354 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:50,355 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:50,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:48:50,355 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:50,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:50,356 INFO L85 PathProgramCache]: Analyzing trace with hash 73255041, now seen corresponding path program 1 times [2022-11-18 19:48:50,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:50,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459813531] [2022-11-18 19:48:50,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:50,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:50,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:50,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459813531] [2022-11-18 19:48:50,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459813531] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:48:50,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983231397] [2022-11-18 19:48:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:50,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:50,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:50,483 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:50,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:48:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:50,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:48:50,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:50,675 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:50,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:48:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:50,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983231397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:48:50,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:48:50,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-18 19:48:50,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367850223] [2022-11-18 19:48:50,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:48:50,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:48:50,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:50,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:48:50,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:48:50,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 251 [2022-11-18 19:48:50,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 255 transitions, 878 flow. Second operand has 10 states, 10 states have (on average 208.5) internal successors, (2085), 10 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:50,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:50,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 251 [2022-11-18 19:48:50,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:52,052 INFO L130 PetriNetUnfolder]: 576/2618 cut-off events. [2022-11-18 19:48:52,052 INFO L131 PetriNetUnfolder]: For 2863/2863 co-relation queries the response was YES. [2022-11-18 19:48:52,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6146 conditions, 2618 events. 576/2618 cut-off events. For 2863/2863 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23049 event pairs, 70 based on Foata normal form. 40/2219 useless extension candidates. Maximal degree in co-relation 5708. Up to 433 conditions per place. [2022-11-18 19:48:52,196 INFO L137 encePairwiseOnDemand]: 242/251 looper letters, 78 selfloop transitions, 16 changer transitions 0/314 dead transitions. [2022-11-18 19:48:52,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 314 transitions, 1354 flow [2022-11-18 19:48:52,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:48:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:48:52,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2552 transitions. [2022-11-18 19:48:52,203 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8472775564409031 [2022-11-18 19:48:52,203 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2552 transitions. [2022-11-18 19:48:52,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2552 transitions. [2022-11-18 19:48:52,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:52,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2552 transitions. [2022-11-18 19:48:52,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 212.66666666666666) internal successors, (2552), 12 states have internal predecessors, (2552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:52,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 251.0) internal successors, (3263), 13 states have internal predecessors, (3263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:52,218 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 251.0) internal successors, (3263), 13 states have internal predecessors, (3263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:52,218 INFO L175 Difference]: Start difference. First operand has 275 places, 255 transitions, 878 flow. Second operand 12 states and 2552 transitions. [2022-11-18 19:48:52,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 314 transitions, 1354 flow [2022-11-18 19:48:52,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 314 transitions, 1344 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-18 19:48:52,234 INFO L231 Difference]: Finished difference. Result has 291 places, 261 transitions, 950 flow [2022-11-18 19:48:52,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=868, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=950, PETRI_PLACES=291, PETRI_TRANSITIONS=261} [2022-11-18 19:48:52,235 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, 64 predicate places. [2022-11-18 19:48:52,235 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 261 transitions, 950 flow [2022-11-18 19:48:52,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 208.5) internal successors, (2085), 10 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:52,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:52,237 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:52,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:52,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:48:52,444 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:52,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2024060071, now seen corresponding path program 1 times [2022-11-18 19:48:52,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:52,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946888868] [2022-11-18 19:48:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:52,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:52,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:52,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:52,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946888868] [2022-11-18 19:48:52,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946888868] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:48:52,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216625867] [2022-11-18 19:48:52,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:52,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:52,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:52,547 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:52,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:48:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:52,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:48:52,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:52,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:52,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216625867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:52,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:48:52,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 19:48:52,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509837401] [2022-11-18 19:48:52,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:52,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:48:52,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:52,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:48:52,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:48:52,697 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 251 [2022-11-18 19:48:52,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 261 transitions, 950 flow. Second operand has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:52,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:52,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 251 [2022-11-18 19:48:52,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:53,614 INFO L130 PetriNetUnfolder]: 492/1912 cut-off events. [2022-11-18 19:48:53,614 INFO L131 PetriNetUnfolder]: For 3223/3223 co-relation queries the response was YES. [2022-11-18 19:48:53,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5407 conditions, 1912 events. 492/1912 cut-off events. For 3223/3223 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 17305 event pairs, 7 based on Foata normal form. 52/1705 useless extension candidates. Maximal degree in co-relation 5207. Up to 634 conditions per place. [2022-11-18 19:48:53,712 INFO L137 encePairwiseOnDemand]: 246/251 looper letters, 36 selfloop transitions, 7 changer transitions 0/263 dead transitions. [2022-11-18 19:48:53,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 263 transitions, 1050 flow [2022-11-18 19:48:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:48:53,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:48:53,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 850 transitions. [2022-11-18 19:48:53,716 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8466135458167331 [2022-11-18 19:48:53,716 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 850 transitions. [2022-11-18 19:48:53,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 850 transitions. [2022-11-18 19:48:53,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:53,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 850 transitions. [2022-11-18 19:48:53,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 212.5) internal successors, (850), 4 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:53,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:53,802 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 251.0) internal successors, (1255), 5 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:53,802 INFO L175 Difference]: Start difference. First operand has 291 places, 261 transitions, 950 flow. Second operand 4 states and 850 transitions. [2022-11-18 19:48:53,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 263 transitions, 1050 flow [2022-11-18 19:48:53,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 263 transitions, 1028 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-11-18 19:48:53,817 INFO L231 Difference]: Finished difference. Result has 286 places, 257 transitions, 914 flow [2022-11-18 19:48:53,818 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=286, PETRI_TRANSITIONS=257} [2022-11-18 19:48:53,818 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, 59 predicate places. [2022-11-18 19:48:53,818 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 257 transitions, 914 flow [2022-11-18 19:48:53,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:53,819 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:53,819 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:53,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 19:48:54,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:48:54,031 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:54,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:54,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1084690390, now seen corresponding path program 1 times [2022-11-18 19:48:54,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:54,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617624723] [2022-11-18 19:48:54,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:54,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:48:54,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:54,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617624723] [2022-11-18 19:48:54,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617624723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:54,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:54,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:48:54,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526879139] [2022-11-18 19:48:54,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:54,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:48:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:48:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:48:54,106 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 251 [2022-11-18 19:48:54,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 257 transitions, 914 flow. Second operand has 4 states, 4 states have (on average 207.5) internal successors, (830), 4 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:54,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:54,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 251 [2022-11-18 19:48:54,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:54,801 INFO L130 PetriNetUnfolder]: 125/949 cut-off events. [2022-11-18 19:48:54,801 INFO L131 PetriNetUnfolder]: For 604/604 co-relation queries the response was YES. [2022-11-18 19:48:54,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1701 conditions, 949 events. 125/949 cut-off events. For 604/604 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6872 event pairs, 37 based on Foata normal form. 0/758 useless extension candidates. Maximal degree in co-relation 1630. Up to 101 conditions per place. [2022-11-18 19:48:54,881 INFO L137 encePairwiseOnDemand]: 245/251 looper letters, 40 selfloop transitions, 4 changer transitions 0/276 dead transitions. [2022-11-18 19:48:54,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 276 transitions, 1070 flow [2022-11-18 19:48:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:48:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1071 transitions. [2022-11-18 19:48:54,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.853386454183267 [2022-11-18 19:48:54,886 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1071 transitions. [2022-11-18 19:48:54,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1071 transitions. [2022-11-18 19:48:54,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:54,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1071 transitions. [2022-11-18 19:48:54,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 214.2) internal successors, (1071), 5 states have internal predecessors, (1071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:54,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:54,894 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 251.0) internal successors, (1506), 6 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:54,894 INFO L175 Difference]: Start difference. First operand has 286 places, 257 transitions, 914 flow. Second operand 5 states and 1071 transitions. [2022-11-18 19:48:54,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 276 transitions, 1070 flow [2022-11-18 19:48:54,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 276 transitions, 1056 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:48:54,908 INFO L231 Difference]: Finished difference. Result has 290 places, 259 transitions, 926 flow [2022-11-18 19:48:54,909 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=900, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=926, PETRI_PLACES=290, PETRI_TRANSITIONS=259} [2022-11-18 19:48:54,909 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, 63 predicate places. [2022-11-18 19:48:54,910 INFO L495 AbstractCegarLoop]: Abstraction has has 290 places, 259 transitions, 926 flow [2022-11-18 19:48:54,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.5) internal successors, (830), 4 states have internal predecessors, (830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:54,910 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:54,911 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:54,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:48:54,911 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:54,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:54,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1399475360, now seen corresponding path program 1 times [2022-11-18 19:48:54,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:54,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835277547] [2022-11-18 19:48:54,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:54,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:54,955 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 19:48:54,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:54,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835277547] [2022-11-18 19:48:54,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835277547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:54,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:54,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:48:54,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717833207] [2022-11-18 19:48:54,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:54,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:54,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:54,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:54,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:54,960 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 251 [2022-11-18 19:48:54,961 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 259 transitions, 926 flow. Second operand has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:54,961 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:54,961 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 251 [2022-11-18 19:48:54,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:55,565 INFO L130 PetriNetUnfolder]: 82/872 cut-off events. [2022-11-18 19:48:55,565 INFO L131 PetriNetUnfolder]: For 449/449 co-relation queries the response was YES. [2022-11-18 19:48:55,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1403 conditions, 872 events. 82/872 cut-off events. For 449/449 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 5724 event pairs, 14 based on Foata normal form. 0/702 useless extension candidates. Maximal degree in co-relation 1329. Up to 48 conditions per place. [2022-11-18 19:48:55,628 INFO L137 encePairwiseOnDemand]: 247/251 looper letters, 29 selfloop transitions, 2 changer transitions 0/271 dead transitions. [2022-11-18 19:48:55,629 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 271 transitions, 1017 flow [2022-11-18 19:48:55,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:55,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:48:55,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-11-18 19:48:55,634 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8804780876494024 [2022-11-18 19:48:55,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-11-18 19:48:55,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-11-18 19:48:55,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:55,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-11-18 19:48:55,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:55,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:55,639 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:55,639 INFO L175 Difference]: Start difference. First operand has 290 places, 259 transitions, 926 flow. Second operand 3 states and 663 transitions. [2022-11-18 19:48:55,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 271 transitions, 1017 flow [2022-11-18 19:48:55,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 271 transitions, 1013 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:48:55,653 INFO L231 Difference]: Finished difference. Result has 291 places, 260 transitions, 936 flow [2022-11-18 19:48:55,654 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=936, PETRI_PLACES=291, PETRI_TRANSITIONS=260} [2022-11-18 19:48:55,655 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, 64 predicate places. [2022-11-18 19:48:55,655 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 260 transitions, 936 flow [2022-11-18 19:48:55,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.33333333333334) internal successors, (637), 3 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:55,656 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:55,656 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:55,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 19:48:55,656 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:55,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:55,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1290576177, now seen corresponding path program 1 times [2022-11-18 19:48:55,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:55,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66104717] [2022-11-18 19:48:55,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:55,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:48:55,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:55,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66104717] [2022-11-18 19:48:55,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66104717] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:55,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:55,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:48:55,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097183950] [2022-11-18 19:48:55,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:55,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:55,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:55,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:55,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:55,739 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 251 [2022-11-18 19:48:55,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 260 transitions, 936 flow. Second operand has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:55,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:55,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 251 [2022-11-18 19:48:55,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:56,700 INFO L130 PetriNetUnfolder]: 195/1086 cut-off events. [2022-11-18 19:48:56,700 INFO L131 PetriNetUnfolder]: For 795/795 co-relation queries the response was YES. [2022-11-18 19:48:56,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2252 conditions, 1086 events. 195/1086 cut-off events. For 795/795 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8902 event pairs, 45 based on Foata normal form. 0/894 useless extension candidates. Maximal degree in co-relation 2177. Up to 132 conditions per place. [2022-11-18 19:48:56,790 INFO L137 encePairwiseOnDemand]: 242/251 looper letters, 75 selfloop transitions, 10 changer transitions 0/313 dead transitions. [2022-11-18 19:48:56,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 313 transitions, 1285 flow [2022-11-18 19:48:56,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:48:56,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:48:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1678 transitions. [2022-11-18 19:48:56,795 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8356573705179283 [2022-11-18 19:48:56,795 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1678 transitions. [2022-11-18 19:48:56,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1678 transitions. [2022-11-18 19:48:56,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:56,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1678 transitions. [2022-11-18 19:48:56,801 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 209.75) internal successors, (1678), 8 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:56,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 251.0) internal successors, (2259), 9 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:56,806 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 251.0) internal successors, (2259), 9 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:56,806 INFO L175 Difference]: Start difference. First operand has 291 places, 260 transitions, 936 flow. Second operand 8 states and 1678 transitions. [2022-11-18 19:48:56,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 313 transitions, 1285 flow [2022-11-18 19:48:56,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 313 transitions, 1283 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:48:56,817 INFO L231 Difference]: Finished difference. Result has 301 places, 267 transitions, 997 flow [2022-11-18 19:48:56,817 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=934, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=997, PETRI_PLACES=301, PETRI_TRANSITIONS=267} [2022-11-18 19:48:56,817 INFO L288 CegarLoopForPetriNet]: 227 programPoint places, 74 predicate places. [2022-11-18 19:48:56,817 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 267 transitions, 997 flow [2022-11-18 19:48:56,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 201.6) internal successors, (1008), 5 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:56,818 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:56,818 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:56,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 19:48:56,818 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2022-11-18 19:48:56,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:56,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1605713635, now seen corresponding path program 1 times [2022-11-18 19:48:56,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:56,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837288509] [2022-11-18 19:48:56,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:56,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:48:56,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-18 19:48:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-18 19:48:56,853 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-18 19:48:56,853 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-18 19:48:56,853 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2022-11-18 19:48:56,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2022-11-18 19:48:56,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2022-11-18 19:48:56,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2022-11-18 19:48:56,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2022-11-18 19:48:56,854 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2022-11-18 19:48:56,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2022-11-18 19:48:56,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2022-11-18 19:48:56,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2022-11-18 19:48:56,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2022-11-18 19:48:56,855 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2022-11-18 19:48:56,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2022-11-18 19:48:56,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2022-11-18 19:48:56,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2022-11-18 19:48:56,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2022-11-18 19:48:56,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2022-11-18 19:48:56,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2022-11-18 19:48:56,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2022-11-18 19:48:56,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2022-11-18 19:48:56,857 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2022-11-18 19:48:56,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2022-11-18 19:48:56,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2022-11-18 19:48:56,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 41 remaining) [2022-11-18 19:48:56,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 41 remaining) [2022-11-18 19:48:56,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 41 remaining) [2022-11-18 19:48:56,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2022-11-18 19:48:56,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2022-11-18 19:48:56,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2022-11-18 19:48:56,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2022-11-18 19:48:56,859 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2022-11-18 19:48:56,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2022-11-18 19:48:56,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2022-11-18 19:48:56,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2022-11-18 19:48:56,860 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2022-11-18 19:48:56,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2022-11-18 19:48:56,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2022-11-18 19:48:56,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2022-11-18 19:48:56,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2022-11-18 19:48:56,861 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2022-11-18 19:48:56,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2022-11-18 19:48:56,862 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2022-11-18 19:48:56,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 19:48:56,862 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:56,863 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-11-18 19:48:56,863 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-11-18 19:48:56,923 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 19:48:56,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 277 places, 307 transitions, 659 flow [2022-11-18 19:48:57,012 INFO L130 PetriNetUnfolder]: 46/370 cut-off events. [2022-11-18 19:48:57,012 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-11-18 19:48:57,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 370 events. 46/370 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1397 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 314. Up to 12 conditions per place. [2022-11-18 19:48:57,021 INFO L82 GeneralOperation]: Start removeDead. Operand has 277 places, 307 transitions, 659 flow [2022-11-18 19:48:57,027 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 277 places, 307 transitions, 659 flow [2022-11-18 19:48:57,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:48:57,029 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;@57e42a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:48:57,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2022-11-18 19:48:57,035 INFO L130 PetriNetUnfolder]: 4/72 cut-off events. [2022-11-18 19:48:57,035 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 19:48:57,036 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:57,036 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:57,036 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:48:57,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:57,037 INFO L85 PathProgramCache]: Analyzing trace with hash -76144780, now seen corresponding path program 1 times [2022-11-18 19:48:57,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:57,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359022519] [2022-11-18 19:48:57,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:57,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:57,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:57,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359022519] [2022-11-18 19:48:57,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359022519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:57,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:57,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:48:57,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825164691] [2022-11-18 19:48:57,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:57,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:57,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:57,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:57,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:57,087 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 307 [2022-11-18 19:48:57,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 307 transitions, 659 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:57,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 307 [2022-11-18 19:48:57,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:57,655 INFO L130 PetriNetUnfolder]: 207/1635 cut-off events. [2022-11-18 19:48:57,656 INFO L131 PetriNetUnfolder]: For 867/867 co-relation queries the response was YES. [2022-11-18 19:48:57,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 1635 events. 207/1635 cut-off events. For 867/867 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 13159 event pairs, 52 based on Foata normal form. 524/1739 useless extension candidates. Maximal degree in co-relation 1717. Up to 133 conditions per place. [2022-11-18 19:48:57,702 INFO L137 encePairwiseOnDemand]: 281/307 looper letters, 33 selfloop transitions, 2 changer transitions 0/290 dead transitions. [2022-11-18 19:48:57,702 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 290 transitions, 727 flow [2022-11-18 19:48:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:57,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:48:57,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 861 transitions. [2022-11-18 19:48:57,706 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9348534201954397 [2022-11-18 19:48:57,706 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 861 transitions. [2022-11-18 19:48:57,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 861 transitions. [2022-11-18 19:48:57,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:57,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 861 transitions. [2022-11-18 19:48:57,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,714 INFO L175 Difference]: Start difference. First operand has 277 places, 307 transitions, 659 flow. Second operand 3 states and 861 transitions. [2022-11-18 19:48:57,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 290 transitions, 727 flow [2022-11-18 19:48:57,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 290 transitions, 695 flow, removed 16 selfloop flow, removed 0 redundant places. [2022-11-18 19:48:57,722 INFO L231 Difference]: Finished difference. Result has 269 places, 276 transitions, 589 flow [2022-11-18 19:48:57,722 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=589, PETRI_PLACES=269, PETRI_TRANSITIONS=276} [2022-11-18 19:48:57,723 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, -8 predicate places. [2022-11-18 19:48:57,723 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 276 transitions, 589 flow [2022-11-18 19:48:57,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:57,724 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:57,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 19:48:57,725 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:48:57,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:57,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1357770489, now seen corresponding path program 1 times [2022-11-18 19:48:57,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:57,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57010403] [2022-11-18 19:48:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:57,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:57,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:57,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:57,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57010403] [2022-11-18 19:48:57,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57010403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:57,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:57,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:48:57,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742077528] [2022-11-18 19:48:57,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:57,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:48:57,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:57,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:48:57,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:48:57,807 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 307 [2022-11-18 19:48:57,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 276 transitions, 589 flow. Second operand has 4 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:57,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:57,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 307 [2022-11-18 19:48:57,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:58,314 INFO L130 PetriNetUnfolder]: 207/1216 cut-off events. [2022-11-18 19:48:58,314 INFO L131 PetriNetUnfolder]: For 400/400 co-relation queries the response was YES. [2022-11-18 19:48:58,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1943 conditions, 1216 events. 207/1216 cut-off events. For 400/400 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9180 event pairs, 72 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 1484. Up to 178 conditions per place. [2022-11-18 19:48:58,356 INFO L137 encePairwiseOnDemand]: 301/307 looper letters, 47 selfloop transitions, 4 changer transitions 0/301 dead transitions. [2022-11-18 19:48:58,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 301 transitions, 801 flow [2022-11-18 19:48:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:48:58,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:48:58,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1328 transitions. [2022-11-18 19:48:58,362 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8651465798045602 [2022-11-18 19:48:58,362 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1328 transitions. [2022-11-18 19:48:58,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1328 transitions. [2022-11-18 19:48:58,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:58,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1328 transitions. [2022-11-18 19:48:58,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 265.6) internal successors, (1328), 5 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:58,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:58,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:58,371 INFO L175 Difference]: Start difference. First operand has 269 places, 276 transitions, 589 flow. Second operand 5 states and 1328 transitions. [2022-11-18 19:48:58,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 301 transitions, 801 flow [2022-11-18 19:48:58,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 301 transitions, 799 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:48:58,378 INFO L231 Difference]: Finished difference. Result has 275 places, 278 transitions, 613 flow [2022-11-18 19:48:58,379 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=587, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=613, PETRI_PLACES=275, PETRI_TRANSITIONS=278} [2022-11-18 19:48:58,379 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, -2 predicate places. [2022-11-18 19:48:58,379 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 278 transitions, 613 flow [2022-11-18 19:48:58,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.25) internal successors, (1029), 4 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:58,380 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:58,380 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:58,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 19:48:58,381 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:48:58,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:58,382 INFO L85 PathProgramCache]: Analyzing trace with hash 207102951, now seen corresponding path program 1 times [2022-11-18 19:48:58,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:58,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028013510] [2022-11-18 19:48:58,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:58,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:48:58,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:58,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028013510] [2022-11-18 19:48:58,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028013510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:58,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:58,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:48:58,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506695341] [2022-11-18 19:48:58,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:58,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:48:58,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:58,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:48:58,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:48:58,432 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 307 [2022-11-18 19:48:58,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 278 transitions, 613 flow. Second operand has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:58,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:58,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 307 [2022-11-18 19:48:58,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:58,944 INFO L130 PetriNetUnfolder]: 164/1347 cut-off events. [2022-11-18 19:48:58,945 INFO L131 PetriNetUnfolder]: For 227/227 co-relation queries the response was YES. [2022-11-18 19:48:58,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1779 conditions, 1347 events. 164/1347 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10084 event pairs, 39 based on Foata normal form. 0/1011 useless extension candidates. Maximal degree in co-relation 1735. Up to 105 conditions per place. [2022-11-18 19:48:59,026 INFO L137 encePairwiseOnDemand]: 303/307 looper letters, 32 selfloop transitions, 2 changer transitions 0/292 dead transitions. [2022-11-18 19:48:59,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 292 transitions, 724 flow [2022-11-18 19:48:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:48:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:48:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 816 transitions. [2022-11-18 19:48:59,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8859934853420195 [2022-11-18 19:48:59,030 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 816 transitions. [2022-11-18 19:48:59,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 816 transitions. [2022-11-18 19:48:59,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:59,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 816 transitions. [2022-11-18 19:48:59,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.0) internal successors, (816), 3 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:59,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:59,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:59,036 INFO L175 Difference]: Start difference. First operand has 275 places, 278 transitions, 613 flow. Second operand 3 states and 816 transitions. [2022-11-18 19:48:59,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 292 transitions, 724 flow [2022-11-18 19:48:59,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 292 transitions, 720 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:48:59,043 INFO L231 Difference]: Finished difference. Result has 276 places, 279 transitions, 623 flow [2022-11-18 19:48:59,043 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=623, PETRI_PLACES=276, PETRI_TRANSITIONS=279} [2022-11-18 19:48:59,044 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, -1 predicate places. [2022-11-18 19:48:59,044 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 279 transitions, 623 flow [2022-11-18 19:48:59,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.0) internal successors, (786), 3 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:59,045 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:59,045 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:59,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 19:48:59,046 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:48:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:59,046 INFO L85 PathProgramCache]: Analyzing trace with hash 853612398, now seen corresponding path program 1 times [2022-11-18 19:48:59,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:59,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694505969] [2022-11-18 19:48:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:59,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:59,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:59,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:59,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694505969] [2022-11-18 19:48:59,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694505969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:59,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:59,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:48:59,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256665370] [2022-11-18 19:48:59,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:59,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:59,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:59,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:59,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:59,109 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 307 [2022-11-18 19:48:59,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 279 transitions, 623 flow. Second operand has 5 states, 5 states have (on average 251.4) internal successors, (1257), 5 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:59,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:59,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 307 [2022-11-18 19:48:59,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:59,793 INFO L130 PetriNetUnfolder]: 339/1383 cut-off events. [2022-11-18 19:48:59,794 INFO L131 PetriNetUnfolder]: For 843/843 co-relation queries the response was YES. [2022-11-18 19:48:59,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2908 conditions, 1383 events. 339/1383 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 11938 event pairs, 88 based on Foata normal form. 0/1115 useless extension candidates. Maximal degree in co-relation 2731. Up to 261 conditions per place. [2022-11-18 19:48:59,854 INFO L137 encePairwiseOnDemand]: 298/307 looper letters, 88 selfloop transitions, 10 changer transitions 0/344 dead transitions. [2022-11-18 19:48:59,854 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 344 transitions, 1082 flow [2022-11-18 19:48:59,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:48:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:48:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2091 transitions. [2022-11-18 19:48:59,857 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8513843648208469 [2022-11-18 19:48:59,857 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2091 transitions. [2022-11-18 19:48:59,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2091 transitions. [2022-11-18 19:48:59,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:59,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2091 transitions. [2022-11-18 19:48:59,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 261.375) internal successors, (2091), 8 states have internal predecessors, (2091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:59,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 307.0) internal successors, (2763), 9 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:59,867 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 307.0) internal successors, (2763), 9 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:59,867 INFO L175 Difference]: Start difference. First operand has 276 places, 279 transitions, 623 flow. Second operand 8 states and 2091 transitions. [2022-11-18 19:48:59,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 344 transitions, 1082 flow [2022-11-18 19:48:59,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 344 transitions, 1080 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:48:59,875 INFO L231 Difference]: Finished difference. Result has 286 places, 286 transitions, 684 flow [2022-11-18 19:48:59,876 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=621, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=684, PETRI_PLACES=286, PETRI_TRANSITIONS=286} [2022-11-18 19:48:59,876 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 9 predicate places. [2022-11-18 19:48:59,877 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 286 transitions, 684 flow [2022-11-18 19:48:59,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 251.4) internal successors, (1257), 5 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:59,877 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:59,878 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:48:59,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 19:48:59,878 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:48:59,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash 692181793, now seen corresponding path program 1 times [2022-11-18 19:48:59,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:59,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469145678] [2022-11-18 19:48:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:59,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:59,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:48:59,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:59,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469145678] [2022-11-18 19:48:59,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469145678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:59,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:48:59,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:48:59,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115126813] [2022-11-18 19:48:59,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:59,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:48:59,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:59,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:48:59,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:48:59,967 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 307 [2022-11-18 19:48:59,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 286 transitions, 684 flow. Second operand has 5 states, 5 states have (on average 251.6) internal successors, (1258), 5 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:48:59,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:59,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 307 [2022-11-18 19:48:59,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:00,738 INFO L130 PetriNetUnfolder]: 363/1452 cut-off events. [2022-11-18 19:49:00,738 INFO L131 PetriNetUnfolder]: For 1046/1046 co-relation queries the response was YES. [2022-11-18 19:49:00,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3250 conditions, 1452 events. 363/1452 cut-off events. For 1046/1046 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 12721 event pairs, 84 based on Foata normal form. 10/1209 useless extension candidates. Maximal degree in co-relation 3071. Up to 285 conditions per place. [2022-11-18 19:49:00,799 INFO L137 encePairwiseOnDemand]: 299/307 looper letters, 70 selfloop transitions, 11 changer transitions 0/327 dead transitions. [2022-11-18 19:49:00,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 327 transitions, 1019 flow [2022-11-18 19:49:00,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:49:00,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:49:00,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1571 transitions. [2022-11-18 19:49:00,804 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8528773072747015 [2022-11-18 19:49:00,805 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1571 transitions. [2022-11-18 19:49:00,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1571 transitions. [2022-11-18 19:49:00,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:00,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1571 transitions. [2022-11-18 19:49:00,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.8333333333333) internal successors, (1571), 6 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 307.0) internal successors, (2149), 7 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,816 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 307.0) internal successors, (2149), 7 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,816 INFO L175 Difference]: Start difference. First operand has 286 places, 286 transitions, 684 flow. Second operand 6 states and 1571 transitions. [2022-11-18 19:49:00,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 327 transitions, 1019 flow [2022-11-18 19:49:00,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 327 transitions, 1019 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:49:00,826 INFO L231 Difference]: Finished difference. Result has 295 places, 288 transitions, 742 flow [2022-11-18 19:49:00,827 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=742, PETRI_PLACES=295, PETRI_TRANSITIONS=288} [2022-11-18 19:49:00,828 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 18 predicate places. [2022-11-18 19:49:00,828 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 288 transitions, 742 flow [2022-11-18 19:49:00,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 251.6) internal successors, (1258), 5 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,829 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:00,829 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:00,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 19:49:00,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:00,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash 692213539, now seen corresponding path program 1 times [2022-11-18 19:49:00,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:00,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338617641] [2022-11-18 19:49:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:00,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:00,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:00,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:00,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338617641] [2022-11-18 19:49:00,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338617641] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:00,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:00,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:49:00,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199467748] [2022-11-18 19:49:00,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:00,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:00,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:00,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:00,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:00,948 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 307 [2022-11-18 19:49:00,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 288 transitions, 742 flow. Second operand has 7 states, 7 states have (on average 246.14285714285714) internal successors, (1723), 7 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:00,951 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:00,951 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 307 [2022-11-18 19:49:00,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:02,139 INFO L130 PetriNetUnfolder]: 582/1931 cut-off events. [2022-11-18 19:49:02,139 INFO L131 PetriNetUnfolder]: For 2086/2086 co-relation queries the response was YES. [2022-11-18 19:49:02,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5129 conditions, 1931 events. 582/1931 cut-off events. For 2086/2086 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 17848 event pairs, 136 based on Foata normal form. 0/1630 useless extension candidates. Maximal degree in co-relation 4946. Up to 489 conditions per place. [2022-11-18 19:49:02,268 INFO L137 encePairwiseOnDemand]: 295/307 looper letters, 131 selfloop transitions, 18 changer transitions 0/393 dead transitions. [2022-11-18 19:49:02,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 393 transitions, 1485 flow [2022-11-18 19:49:02,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:49:02,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:49:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2831 transitions. [2022-11-18 19:49:02,275 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383180337577731 [2022-11-18 19:49:02,276 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2831 transitions. [2022-11-18 19:49:02,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2831 transitions. [2022-11-18 19:49:02,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:02,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2831 transitions. [2022-11-18 19:49:02,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 257.3636363636364) internal successors, (2831), 11 states have internal predecessors, (2831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 307.0) internal successors, (3684), 12 states have internal predecessors, (3684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,292 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 307.0) internal successors, (3684), 12 states have internal predecessors, (3684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,293 INFO L175 Difference]: Start difference. First operand has 295 places, 288 transitions, 742 flow. Second operand 11 states and 2831 transitions. [2022-11-18 19:49:02,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 393 transitions, 1485 flow [2022-11-18 19:49:02,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 393 transitions, 1475 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-18 19:49:02,307 INFO L231 Difference]: Finished difference. Result has 312 places, 301 transitions, 865 flow [2022-11-18 19:49:02,307 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=736, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=865, PETRI_PLACES=312, PETRI_TRANSITIONS=301} [2022-11-18 19:49:02,308 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 35 predicate places. [2022-11-18 19:49:02,308 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 301 transitions, 865 flow [2022-11-18 19:49:02,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 246.14285714285714) internal successors, (1723), 7 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,309 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:02,309 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:02,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 19:49:02,310 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:02,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:02,311 INFO L85 PathProgramCache]: Analyzing trace with hash -16215535, now seen corresponding path program 1 times [2022-11-18 19:49:02,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:02,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773614923] [2022-11-18 19:49:02,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:02,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:02,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:02,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:02,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773614923] [2022-11-18 19:49:02,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773614923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:02,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:02,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:49:02,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888020015] [2022-11-18 19:49:02,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:02,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:02,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:02,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:02,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:02,423 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 307 [2022-11-18 19:49:02,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 301 transitions, 865 flow. Second operand has 7 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 7 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:02,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:02,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 307 [2022-11-18 19:49:02,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:03,642 INFO L130 PetriNetUnfolder]: 696/2255 cut-off events. [2022-11-18 19:49:03,643 INFO L131 PetriNetUnfolder]: For 2918/2918 co-relation queries the response was YES. [2022-11-18 19:49:03,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6432 conditions, 2255 events. 696/2255 cut-off events. For 2918/2918 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 21304 event pairs, 136 based on Foata normal form. 30/2004 useless extension candidates. Maximal degree in co-relation 6241. Up to 593 conditions per place. [2022-11-18 19:49:03,755 INFO L137 encePairwiseOnDemand]: 295/307 looper letters, 117 selfloop transitions, 21 changer transitions 0/382 dead transitions. [2022-11-18 19:49:03,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 382 transitions, 1512 flow [2022-11-18 19:49:03,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:49:03,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:49:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2328 transitions. [2022-11-18 19:49:03,763 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8425624321389794 [2022-11-18 19:49:03,763 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2328 transitions. [2022-11-18 19:49:03,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2328 transitions. [2022-11-18 19:49:03,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:03,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2328 transitions. [2022-11-18 19:49:03,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 258.6666666666667) internal successors, (2328), 9 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) [2022-11-18 19:49:03,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,773 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,773 INFO L175 Difference]: Start difference. First operand has 312 places, 301 transitions, 865 flow. Second operand 9 states and 2328 transitions. [2022-11-18 19:49:03,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 382 transitions, 1512 flow [2022-11-18 19:49:03,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 382 transitions, 1510 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 19:49:03,786 INFO L231 Difference]: Finished difference. Result has 324 places, 306 transitions, 985 flow [2022-11-18 19:49:03,787 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=985, PETRI_PLACES=324, PETRI_TRANSITIONS=306} [2022-11-18 19:49:03,788 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 47 predicate places. [2022-11-18 19:49:03,788 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 306 transitions, 985 flow [2022-11-18 19:49:03,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 7 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:03,789 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:03,789 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:03,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 19:49:03,789 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:03,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1073220486, now seen corresponding path program 1 times [2022-11-18 19:49:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:03,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382733290] [2022-11-18 19:49:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:03,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:03,845 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:03,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:03,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382733290] [2022-11-18 19:49:03,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382733290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:03,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172430505] [2022-11-18 19:49:03,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:03,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:03,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:03,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:03,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:49:03,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:03,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:49:03,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:04,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:04,020 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:04,073 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:04,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172430505] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:04,073 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:04,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-18 19:49:04,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837824881] [2022-11-18 19:49:04,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:04,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:49:04,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:04,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:49:04,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:49:04,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 307 [2022-11-18 19:49:04,081 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 306 transitions, 985 flow. Second operand has 10 states, 10 states have (on average 258.5) internal successors, (2585), 10 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:04,081 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:04,081 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 307 [2022-11-18 19:49:04,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:05,421 INFO L130 PetriNetUnfolder]: 761/3328 cut-off events. [2022-11-18 19:49:05,421 INFO L131 PetriNetUnfolder]: For 3701/3701 co-relation queries the response was YES. [2022-11-18 19:49:05,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7881 conditions, 3328 events. 761/3328 cut-off events. For 3701/3701 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 30725 event pairs, 93 based on Foata normal form. 50/2813 useless extension candidates. Maximal degree in co-relation 7442. Up to 581 conditions per place. [2022-11-18 19:49:05,573 INFO L137 encePairwiseOnDemand]: 298/307 looper letters, 89 selfloop transitions, 16 changer transitions 0/375 dead transitions. [2022-11-18 19:49:05,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 375 transitions, 1553 flow [2022-11-18 19:49:05,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:49:05,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:49:05,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3163 transitions. [2022-11-18 19:49:05,578 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8585776330076005 [2022-11-18 19:49:05,579 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3163 transitions. [2022-11-18 19:49:05,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3163 transitions. [2022-11-18 19:49:05,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:05,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3163 transitions. [2022-11-18 19:49:05,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 263.5833333333333) internal successors, (3163), 12 states have internal predecessors, (3163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:05,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 307.0) internal successors, (3991), 13 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:05,593 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 307.0) internal successors, (3991), 13 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:05,593 INFO L175 Difference]: Start difference. First operand has 324 places, 306 transitions, 985 flow. Second operand 12 states and 3163 transitions. [2022-11-18 19:49:05,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 375 transitions, 1553 flow [2022-11-18 19:49:05,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 375 transitions, 1543 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-18 19:49:05,613 INFO L231 Difference]: Finished difference. Result has 340 places, 312 transitions, 1057 flow [2022-11-18 19:49:05,613 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1057, PETRI_PLACES=340, PETRI_TRANSITIONS=312} [2022-11-18 19:49:05,614 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 63 predicate places. [2022-11-18 19:49:05,614 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 312 transitions, 1057 flow [2022-11-18 19:49:05,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 258.5) internal successors, (2585), 10 states have internal predecessors, (2585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:05,615 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:05,615 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:05,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:05,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-18 19:49:05,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:05,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:05,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1089902096, now seen corresponding path program 1 times [2022-11-18 19:49:05,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:05,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066325506] [2022-11-18 19:49:05,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:05,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:05,891 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:05,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:05,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066325506] [2022-11-18 19:49:05,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066325506] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:05,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231972402] [2022-11-18 19:49:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:05,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:05,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:05,894 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:05,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:49:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:06,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:49:06,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:06,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:06,048 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:49:06,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231972402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:06,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:49:06,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 19:49:06,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496616998] [2022-11-18 19:49:06,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:06,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:49:06,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:06,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:49:06,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:06,051 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 307 [2022-11-18 19:49:06,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 312 transitions, 1057 flow. Second operand has 4 states, 4 states have (on average 258.75) internal successors, (1035), 4 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:06,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:06,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 307 [2022-11-18 19:49:06,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:07,173 INFO L130 PetriNetUnfolder]: 652/2428 cut-off events. [2022-11-18 19:49:07,173 INFO L131 PetriNetUnfolder]: For 4141/4141 co-relation queries the response was YES. [2022-11-18 19:49:07,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6930 conditions, 2428 events. 652/2428 cut-off events. For 4141/4141 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 22628 event pairs, 9 based on Foata normal form. 65/2165 useless extension candidates. Maximal degree in co-relation 6729. Up to 818 conditions per place. [2022-11-18 19:49:07,295 INFO L137 encePairwiseOnDemand]: 302/307 looper letters, 39 selfloop transitions, 7 changer transitions 0/316 dead transitions. [2022-11-18 19:49:07,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 316 transitions, 1177 flow [2022-11-18 19:49:07,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:49:07,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:49:07,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1053 transitions. [2022-11-18 19:49:07,298 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8574918566775245 [2022-11-18 19:49:07,298 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1053 transitions. [2022-11-18 19:49:07,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1053 transitions. [2022-11-18 19:49:07,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:07,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1053 transitions. [2022-11-18 19:49:07,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 263.25) internal successors, (1053), 4 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,303 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 307.0) internal successors, (1535), 5 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,303 INFO L175 Difference]: Start difference. First operand has 340 places, 312 transitions, 1057 flow. Second operand 4 states and 1053 transitions. [2022-11-18 19:49:07,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 316 transitions, 1177 flow [2022-11-18 19:49:07,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 316 transitions, 1155 flow, removed 5 selfloop flow, removed 3 redundant places. [2022-11-18 19:49:07,324 INFO L231 Difference]: Finished difference. Result has 335 places, 308 transitions, 1021 flow [2022-11-18 19:49:07,325 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1021, PETRI_PLACES=335, PETRI_TRANSITIONS=308} [2022-11-18 19:49:07,325 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 58 predicate places. [2022-11-18 19:49:07,325 INFO L495 AbstractCegarLoop]: Abstraction has has 335 places, 308 transitions, 1021 flow [2022-11-18 19:49:07,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.75) internal successors, (1035), 4 states have internal predecessors, (1035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,326 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:07,326 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:07,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:07,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:07,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:07,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1877932541, now seen corresponding path program 1 times [2022-11-18 19:49:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:07,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584503668] [2022-11-18 19:49:07,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:07,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:07,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:49:07,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:07,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584503668] [2022-11-18 19:49:07,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584503668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:07,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:07,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:49:07,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821548105] [2022-11-18 19:49:07,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:07,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:49:07,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:07,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:49:07,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:49:07,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 307 [2022-11-18 19:49:07,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 308 transitions, 1021 flow. Second operand has 4 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:07,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:07,591 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 307 [2022-11-18 19:49:07,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:08,556 INFO L130 PetriNetUnfolder]: 175/1225 cut-off events. [2022-11-18 19:49:08,556 INFO L131 PetriNetUnfolder]: For 701/701 co-relation queries the response was YES. [2022-11-18 19:49:08,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2145 conditions, 1225 events. 175/1225 cut-off events. For 701/701 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9430 event pairs, 55 based on Foata normal form. 0/961 useless extension candidates. Maximal degree in co-relation 2073. Up to 140 conditions per place. [2022-11-18 19:49:08,660 INFO L137 encePairwiseOnDemand]: 301/307 looper letters, 44 selfloop transitions, 4 changer transitions 0/330 dead transitions. [2022-11-18 19:49:08,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 330 transitions, 1206 flow [2022-11-18 19:49:08,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:49:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:49:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1325 transitions. [2022-11-18 19:49:08,663 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8631921824104235 [2022-11-18 19:49:08,663 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1325 transitions. [2022-11-18 19:49:08,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1325 transitions. [2022-11-18 19:49:08,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:08,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1325 transitions. [2022-11-18 19:49:08,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 265.0) internal successors, (1325), 5 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:08,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:08,667 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:08,668 INFO L175 Difference]: Start difference. First operand has 335 places, 308 transitions, 1021 flow. Second operand 5 states and 1325 transitions. [2022-11-18 19:49:08,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 330 transitions, 1206 flow [2022-11-18 19:49:08,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 330 transitions, 1192 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:49:08,680 INFO L231 Difference]: Finished difference. Result has 339 places, 310 transitions, 1033 flow [2022-11-18 19:49:08,680 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1033, PETRI_PLACES=339, PETRI_TRANSITIONS=310} [2022-11-18 19:49:08,681 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 62 predicate places. [2022-11-18 19:49:08,681 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 310 transitions, 1033 flow [2022-11-18 19:49:08,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:08,682 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:08,682 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:08,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 19:49:08,682 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1810406198, now seen corresponding path program 1 times [2022-11-18 19:49:08,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:08,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726406903] [2022-11-18 19:49:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:08,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:08,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-18 19:49:08,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:08,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726406903] [2022-11-18 19:49:08,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726406903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:08,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:08,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:49:08,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321115191] [2022-11-18 19:49:08,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:08,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:49:08,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:08,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:49:08,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:49:08,724 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 307 [2022-11-18 19:49:08,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 310 transitions, 1033 flow. Second operand has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:08,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:08,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 307 [2022-11-18 19:49:08,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:09,531 INFO L130 PetriNetUnfolder]: 132/1252 cut-off events. [2022-11-18 19:49:09,531 INFO L131 PetriNetUnfolder]: For 521/521 co-relation queries the response was YES. [2022-11-18 19:49:09,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1906 conditions, 1252 events. 132/1252 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 9151 event pairs, 27 based on Foata normal form. 0/980 useless extension candidates. Maximal degree in co-relation 1831. Up to 77 conditions per place. [2022-11-18 19:49:09,649 INFO L137 encePairwiseOnDemand]: 303/307 looper letters, 31 selfloop transitions, 2 changer transitions 0/323 dead transitions. [2022-11-18 19:49:09,649 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 323 transitions, 1135 flow [2022-11-18 19:49:09,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:49:09,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:49:09,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 815 transitions. [2022-11-18 19:49:09,651 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8849077090119435 [2022-11-18 19:49:09,651 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 815 transitions. [2022-11-18 19:49:09,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 815 transitions. [2022-11-18 19:49:09,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:09,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 815 transitions. [2022-11-18 19:49:09,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.6666666666667) internal successors, (815), 3 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:09,654 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:09,655 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:09,655 INFO L175 Difference]: Start difference. First operand has 339 places, 310 transitions, 1033 flow. Second operand 3 states and 815 transitions. [2022-11-18 19:49:09,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 323 transitions, 1135 flow [2022-11-18 19:49:09,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 323 transitions, 1131 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 19:49:09,667 INFO L231 Difference]: Finished difference. Result has 340 places, 311 transitions, 1043 flow [2022-11-18 19:49:09,668 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1029, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1043, PETRI_PLACES=340, PETRI_TRANSITIONS=311} [2022-11-18 19:49:09,669 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 63 predicate places. [2022-11-18 19:49:09,669 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 311 transitions, 1043 flow [2022-11-18 19:49:09,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:09,670 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:09,670 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:09,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 19:49:09,670 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:09,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:09,671 INFO L85 PathProgramCache]: Analyzing trace with hash 807900164, now seen corresponding path program 1 times [2022-11-18 19:49:09,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:09,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811447175] [2022-11-18 19:49:09,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:09,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:49:09,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:09,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811447175] [2022-11-18 19:49:09,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811447175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:09,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:09,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:49:09,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586612314] [2022-11-18 19:49:09,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:09,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:49:09,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:09,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:49:09,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:49:09,733 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 307 [2022-11-18 19:49:09,734 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 311 transitions, 1043 flow. Second operand has 5 states, 5 states have (on average 251.6) internal successors, (1258), 5 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:09,734 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:09,734 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 307 [2022-11-18 19:49:09,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:10,789 INFO L130 PetriNetUnfolder]: 276/1377 cut-off events. [2022-11-18 19:49:10,789 INFO L131 PetriNetUnfolder]: For 1002/1002 co-relation queries the response was YES. [2022-11-18 19:49:10,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2895 conditions, 1377 events. 276/1377 cut-off events. For 1002/1002 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 11983 event pairs, 67 based on Foata normal form. 0/1128 useless extension candidates. Maximal degree in co-relation 2819. Up to 197 conditions per place. [2022-11-18 19:49:10,953 INFO L137 encePairwiseOnDemand]: 298/307 looper letters, 82 selfloop transitions, 10 changer transitions 0/370 dead transitions. [2022-11-18 19:49:10,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 370 transitions, 1448 flow [2022-11-18 19:49:10,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:49:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:49:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2085 transitions. [2022-11-18 19:49:10,956 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8489413680781759 [2022-11-18 19:49:10,956 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2085 transitions. [2022-11-18 19:49:10,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2085 transitions. [2022-11-18 19:49:10,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:10,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2085 transitions. [2022-11-18 19:49:10,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 260.625) internal successors, (2085), 8 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:10,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 307.0) internal successors, (2763), 9 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:10,962 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 307.0) internal successors, (2763), 9 states have internal predecessors, (2763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:10,962 INFO L175 Difference]: Start difference. First operand has 340 places, 311 transitions, 1043 flow. Second operand 8 states and 2085 transitions. [2022-11-18 19:49:10,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 370 transitions, 1448 flow [2022-11-18 19:49:10,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 370 transitions, 1446 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:49:10,976 INFO L231 Difference]: Finished difference. Result has 350 places, 318 transitions, 1104 flow [2022-11-18 19:49:10,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1104, PETRI_PLACES=350, PETRI_TRANSITIONS=318} [2022-11-18 19:49:10,977 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 73 predicate places. [2022-11-18 19:49:10,978 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 318 transitions, 1104 flow [2022-11-18 19:49:10,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 251.6) internal successors, (1258), 5 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:10,978 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:10,978 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:10,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 19:49:10,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:10,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:10,979 INFO L85 PathProgramCache]: Analyzing trace with hash -724865770, now seen corresponding path program 1 times [2022-11-18 19:49:10,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:10,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352857481] [2022-11-18 19:49:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:10,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:49:11,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:11,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352857481] [2022-11-18 19:49:11,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352857481] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:11,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:11,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:49:11,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400359109] [2022-11-18 19:49:11,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:11,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:11,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:11,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:11,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:11,101 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 307 [2022-11-18 19:49:11,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 318 transitions, 1104 flow. Second operand has 7 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 7 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:11,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:11,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 307 [2022-11-18 19:49:11,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:12,623 INFO L130 PetriNetUnfolder]: 411/1680 cut-off events. [2022-11-18 19:49:12,624 INFO L131 PetriNetUnfolder]: For 1507/1507 co-relation queries the response was YES. [2022-11-18 19:49:12,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4068 conditions, 1680 events. 411/1680 cut-off events. For 1507/1507 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 15194 event pairs, 79 based on Foata normal form. 0/1421 useless extension candidates. Maximal degree in co-relation 3988. Up to 320 conditions per place. [2022-11-18 19:49:12,851 INFO L137 encePairwiseOnDemand]: 295/307 looper letters, 120 selfloop transitions, 18 changer transitions 0/414 dead transitions. [2022-11-18 19:49:12,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 414 transitions, 1746 flow [2022-11-18 19:49:12,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:49:12,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:49:12,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2822 transitions. [2022-11-18 19:49:12,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8356529464021321 [2022-11-18 19:49:12,856 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2822 transitions. [2022-11-18 19:49:12,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2822 transitions. [2022-11-18 19:49:12,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:12,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2822 transitions. [2022-11-18 19:49:12,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 256.54545454545456) internal successors, (2822), 11 states have internal predecessors, (2822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:12,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 307.0) internal successors, (3684), 12 states have internal predecessors, (3684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:12,866 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 307.0) internal successors, (3684), 12 states have internal predecessors, (3684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:12,866 INFO L175 Difference]: Start difference. First operand has 350 places, 318 transitions, 1104 flow. Second operand 11 states and 2822 transitions. [2022-11-18 19:49:12,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 414 transitions, 1746 flow [2022-11-18 19:49:12,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 414 transitions, 1746 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:49:12,881 INFO L231 Difference]: Finished difference. Result has 367 places, 331 transitions, 1229 flow [2022-11-18 19:49:12,882 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1229, PETRI_PLACES=367, PETRI_TRANSITIONS=331} [2022-11-18 19:49:12,883 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 90 predicate places. [2022-11-18 19:49:12,883 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 331 transitions, 1229 flow [2022-11-18 19:49:12,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 246.28571428571428) internal successors, (1724), 7 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:12,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:12,884 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:12,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 19:49:12,884 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thr1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:12,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:12,885 INFO L85 PathProgramCache]: Analyzing trace with hash -724897516, now seen corresponding path program 1 times [2022-11-18 19:49:12,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:12,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914259508] [2022-11-18 19:49:12,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:12,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:12,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:49:12,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:12,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914259508] [2022-11-18 19:49:12,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914259508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:12,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:12,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:49:12,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664822403] [2022-11-18 19:49:12,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:12,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:49:12,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:12,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:49:12,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:49:12,958 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 307 [2022-11-18 19:49:12,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 331 transitions, 1229 flow. Second operand has 5 states, 5 states have (on average 251.8) internal successors, (1259), 5 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:12,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:12,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 307 [2022-11-18 19:49:12,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:14,519 INFO L130 PetriNetUnfolder]: 402/1747 cut-off events. [2022-11-18 19:49:14,519 INFO L131 PetriNetUnfolder]: For 1760/1760 co-relation queries the response was YES. [2022-11-18 19:49:14,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4351 conditions, 1747 events. 402/1747 cut-off events. For 1760/1760 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 16011 event pairs, 103 based on Foata normal form. 12/1530 useless extension candidates. Maximal degree in co-relation 4263. Up to 311 conditions per place. [2022-11-18 19:49:14,698 INFO L137 encePairwiseOnDemand]: 299/307 looper letters, 71 selfloop transitions, 12 changer transitions 0/367 dead transitions. [2022-11-18 19:49:14,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 367 transitions, 1546 flow [2022-11-18 19:49:14,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:49:14,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 19:49:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1567 transitions. [2022-11-18 19:49:14,701 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8507057546145494 [2022-11-18 19:49:14,701 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1567 transitions. [2022-11-18 19:49:14,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1567 transitions. [2022-11-18 19:49:14,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:14,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1567 transitions. [2022-11-18 19:49:14,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:14,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 307.0) internal successors, (2149), 7 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:14,706 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 307.0) internal successors, (2149), 7 states have internal predecessors, (2149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:14,706 INFO L175 Difference]: Start difference. First operand has 367 places, 331 transitions, 1229 flow. Second operand 6 states and 1567 transitions. [2022-11-18 19:49:14,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 367 transitions, 1546 flow [2022-11-18 19:49:14,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 367 transitions, 1544 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-11-18 19:49:14,722 INFO L231 Difference]: Finished difference. Result has 376 places, 333 transitions, 1291 flow [2022-11-18 19:49:14,723 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1291, PETRI_PLACES=376, PETRI_TRANSITIONS=333} [2022-11-18 19:49:14,723 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 99 predicate places. [2022-11-18 19:49:14,723 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 333 transitions, 1291 flow [2022-11-18 19:49:14,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 251.8) internal successors, (1259), 5 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:14,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:14,724 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:14,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 19:49:14,725 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:14,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:14,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1566671967, now seen corresponding path program 1 times [2022-11-18 19:49:14,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:14,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319400395] [2022-11-18 19:49:14,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:14,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:14,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:14,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:14,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319400395] [2022-11-18 19:49:14,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319400395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:14,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495324278] [2022-11-18 19:49:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:14,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:14,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:14,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:14,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:49:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:14,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:49:14,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:15,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:15,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:15,089 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:15,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495324278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:15,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:15,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-11-18 19:49:15,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491185078] [2022-11-18 19:49:15,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:15,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:49:15,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:15,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:49:15,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:49:15,095 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 307 [2022-11-18 19:49:15,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 333 transitions, 1291 flow. Second operand has 13 states, 13 states have (on average 252.07692307692307) internal successors, (3277), 13 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:15,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:15,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 307 [2022-11-18 19:49:15,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:18,533 INFO L130 PetriNetUnfolder]: 1171/3914 cut-off events. [2022-11-18 19:49:18,533 INFO L131 PetriNetUnfolder]: For 7053/7053 co-relation queries the response was YES. [2022-11-18 19:49:18,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12006 conditions, 3914 events. 1171/3914 cut-off events. For 7053/7053 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 40117 event pairs, 353 based on Foata normal form. 30/3495 useless extension candidates. Maximal degree in co-relation 11784. Up to 977 conditions per place. [2022-11-18 19:49:18,879 INFO L137 encePairwiseOnDemand]: 297/307 looper letters, 187 selfloop transitions, 32 changer transitions 0/498 dead transitions. [2022-11-18 19:49:18,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 498 transitions, 2693 flow [2022-11-18 19:49:18,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:49:18,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 19:49:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 5432 transitions. [2022-11-18 19:49:18,886 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8425624321389794 [2022-11-18 19:49:18,886 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 5432 transitions. [2022-11-18 19:49:18,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 5432 transitions. [2022-11-18 19:49:18,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:18,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 5432 transitions. [2022-11-18 19:49:18,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 258.6666666666667) internal successors, (5432), 21 states have internal predecessors, (5432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:19,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 307.0) internal successors, (6754), 22 states have internal predecessors, (6754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:19,022 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 307.0) internal successors, (6754), 22 states have internal predecessors, (6754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:19,022 INFO L175 Difference]: Start difference. First operand has 376 places, 333 transitions, 1291 flow. Second operand 21 states and 5432 transitions. [2022-11-18 19:49:19,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 498 transitions, 2693 flow [2022-11-18 19:49:19,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 498 transitions, 2685 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-11-18 19:49:19,054 INFO L231 Difference]: Finished difference. Result has 401 places, 352 transitions, 1568 flow [2022-11-18 19:49:19,055 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1568, PETRI_PLACES=401, PETRI_TRANSITIONS=352} [2022-11-18 19:49:19,056 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 124 predicate places. [2022-11-18 19:49:19,056 INFO L495 AbstractCegarLoop]: Abstraction has has 401 places, 352 transitions, 1568 flow [2022-11-18 19:49:19,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 252.07692307692307) internal successors, (3277), 13 states have internal predecessors, (3277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:19,057 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:19,057 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:19,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:19,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 19:49:19,264 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:19,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:19,264 INFO L85 PathProgramCache]: Analyzing trace with hash -249757636, now seen corresponding path program 1 times [2022-11-18 19:49:19,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:19,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460676751] [2022-11-18 19:49:19,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:19,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:19,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:19,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:19,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460676751] [2022-11-18 19:49:19,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460676751] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:19,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842337565] [2022-11-18 19:49:19,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:19,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:19,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:19,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:19,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:49:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:19,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:49:19,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:19,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:19,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:19,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:19,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842337565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:19,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:19,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2022-11-18 19:49:19,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053021615] [2022-11-18 19:49:19,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:19,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:49:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:19,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:49:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:49:19,685 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 307 [2022-11-18 19:49:19,689 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 352 transitions, 1568 flow. Second operand has 19 states, 19 states have (on average 246.94736842105263) internal successors, (4692), 19 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:19,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:19,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 307 [2022-11-18 19:49:19,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:24,830 INFO L130 PetriNetUnfolder]: 1843/5481 cut-off events. [2022-11-18 19:49:24,830 INFO L131 PetriNetUnfolder]: For 11994/11994 co-relation queries the response was YES. [2022-11-18 19:49:25,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18494 conditions, 5481 events. 1843/5481 cut-off events. For 11994/11994 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 58159 event pairs, 428 based on Foata normal form. 15/4897 useless extension candidates. Maximal degree in co-relation 18267. Up to 1589 conditions per place. [2022-11-18 19:49:25,352 INFO L137 encePairwiseOnDemand]: 293/307 looper letters, 291 selfloop transitions, 48 changer transitions 0/612 dead transitions. [2022-11-18 19:49:25,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 612 transitions, 3741 flow [2022-11-18 19:49:25,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 19:49:25,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-11-18 19:49:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 7380 transitions. [2022-11-18 19:49:25,361 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8289340671683703 [2022-11-18 19:49:25,362 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 7380 transitions. [2022-11-18 19:49:25,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 7380 transitions. [2022-11-18 19:49:25,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:25,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 7380 transitions. [2022-11-18 19:49:25,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 254.48275862068965) internal successors, (7380), 29 states have internal predecessors, (7380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:25,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 307.0) internal successors, (9210), 30 states have internal predecessors, (9210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:25,385 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 307.0) internal successors, (9210), 30 states have internal predecessors, (9210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:25,385 INFO L175 Difference]: Start difference. First operand has 401 places, 352 transitions, 1568 flow. Second operand 29 states and 7380 transitions. [2022-11-18 19:49:25,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 612 transitions, 3741 flow [2022-11-18 19:49:25,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 612 transitions, 3603 flow, removed 21 selfloop flow, removed 11 redundant places. [2022-11-18 19:49:25,442 INFO L231 Difference]: Finished difference. Result has 424 places, 375 transitions, 1837 flow [2022-11-18 19:49:25,442 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1473, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1837, PETRI_PLACES=424, PETRI_TRANSITIONS=375} [2022-11-18 19:49:25,443 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 147 predicate places. [2022-11-18 19:49:25,443 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 375 transitions, 1837 flow [2022-11-18 19:49:25,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 246.94736842105263) internal successors, (4692), 19 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:25,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:25,444 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:25,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:25,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 19:49:25,650 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thr1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:25,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:25,651 INFO L85 PathProgramCache]: Analyzing trace with hash -996001209, now seen corresponding path program 1 times [2022-11-18 19:49:25,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:25,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222038513] [2022-11-18 19:49:25,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:25,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:49:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:25,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222038513] [2022-11-18 19:49:25,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222038513] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:49:25,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:49:25,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:49:25,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007232889] [2022-11-18 19:49:25,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:49:25,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:49:25,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:25,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:49:25,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:49:25,862 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 307 [2022-11-18 19:49:25,864 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 375 transitions, 1837 flow. Second operand has 7 states, 7 states have (on average 246.42857142857142) internal successors, (1725), 7 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:25,864 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:25,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 307 [2022-11-18 19:49:25,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:29,969 INFO L130 PetriNetUnfolder]: 568/2401 cut-off events. [2022-11-18 19:49:29,969 INFO L131 PetriNetUnfolder]: For 3551/3551 co-relation queries the response was YES. [2022-11-18 19:49:30,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6522 conditions, 2401 events. 568/2401 cut-off events. For 3551/3551 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 23294 event pairs, 103 based on Foata normal form. 24/2115 useless extension candidates. Maximal degree in co-relation 6424. Up to 446 conditions per place. [2022-11-18 19:49:30,814 INFO L137 encePairwiseOnDemand]: 295/307 looper letters, 110 selfloop transitions, 21 changer transitions 0/449 dead transitions. [2022-11-18 19:49:30,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 449 transitions, 2421 flow [2022-11-18 19:49:30,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:49:30,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-18 19:49:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2321 transitions. [2022-11-18 19:49:30,817 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8400289540354687 [2022-11-18 19:49:30,817 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2321 transitions. [2022-11-18 19:49:30,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2321 transitions. [2022-11-18 19:49:30,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:30,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2321 transitions. [2022-11-18 19:49:30,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 257.8888888888889) internal successors, (2321), 9 states have internal predecessors, (2321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:30,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:30,821 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 307.0) internal successors, (3070), 10 states have internal predecessors, (3070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:30,822 INFO L175 Difference]: Start difference. First operand has 424 places, 375 transitions, 1837 flow. Second operand 9 states and 2321 transitions. [2022-11-18 19:49:30,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 449 transitions, 2421 flow [2022-11-18 19:49:30,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 449 transitions, 2308 flow, removed 19 selfloop flow, removed 14 redundant places. [2022-11-18 19:49:30,851 INFO L231 Difference]: Finished difference. Result has 422 places, 380 transitions, 1846 flow [2022-11-18 19:49:30,852 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1703, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1846, PETRI_PLACES=422, PETRI_TRANSITIONS=380} [2022-11-18 19:49:30,852 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 145 predicate places. [2022-11-18 19:49:30,852 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 380 transitions, 1846 flow [2022-11-18 19:49:30,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 246.42857142857142) internal successors, (1725), 7 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:30,853 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:30,853 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:30,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-18 19:49:30,854 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thr1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:30,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:30,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1322157744, now seen corresponding path program 1 times [2022-11-18 19:49:30,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:30,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602547839] [2022-11-18 19:49:30,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:30,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:31,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:31,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:31,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602547839] [2022-11-18 19:49:31,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602547839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:31,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140113230] [2022-11-18 19:49:31,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:31,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:31,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:31,027 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:31,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:49:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:31,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:49:31,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:31,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:31,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140113230] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:31,344 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:31,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2022-11-18 19:49:31,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925441249] [2022-11-18 19:49:31,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:31,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-18 19:49:31,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:31,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-18 19:49:31,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:49:31,350 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 307 [2022-11-18 19:49:31,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 380 transitions, 1846 flow. Second operand has 19 states, 19 states have (on average 242.10526315789474) internal successors, (4600), 19 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:31,355 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:31,355 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 307 [2022-11-18 19:49:31,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:39,097 INFO L130 PetriNetUnfolder]: 2459/6841 cut-off events. [2022-11-18 19:49:39,097 INFO L131 PetriNetUnfolder]: For 13857/13857 co-relation queries the response was YES. [2022-11-18 19:49:39,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23622 conditions, 6841 events. 2459/6841 cut-off events. For 13857/13857 co-relation queries the response was YES. Maximal size of possible extension queue 418. Compared 74742 event pairs, 516 based on Foata normal form. 15/6133 useless extension candidates. Maximal degree in co-relation 23393. Up to 2161 conditions per place. [2022-11-18 19:49:39,881 INFO L137 encePairwiseOnDemand]: 290/307 looper letters, 433 selfloop transitions, 86 changer transitions 0/785 dead transitions. [2022-11-18 19:49:39,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 785 transitions, 5151 flow [2022-11-18 19:49:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 19:49:39,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-11-18 19:49:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 12433 transitions. [2022-11-18 19:49:39,896 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8099674267100977 [2022-11-18 19:49:39,897 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 12433 transitions. [2022-11-18 19:49:39,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 12433 transitions. [2022-11-18 19:49:39,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:39,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 12433 transitions. [2022-11-18 19:49:39,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 248.66) internal successors, (12433), 50 states have internal predecessors, (12433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:39,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 307.0) internal successors, (15657), 51 states have internal predecessors, (15657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:39,936 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 307.0) internal successors, (15657), 51 states have internal predecessors, (15657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:39,936 INFO L175 Difference]: Start difference. First operand has 422 places, 380 transitions, 1846 flow. Second operand 50 states and 12433 transitions. [2022-11-18 19:49:39,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 785 transitions, 5151 flow [2022-11-18 19:49:39,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 785 transitions, 5141 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-11-18 19:49:40,004 INFO L231 Difference]: Finished difference. Result has 482 places, 420 transitions, 2420 flow [2022-11-18 19:49:40,004 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=1836, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=324, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2420, PETRI_PLACES=482, PETRI_TRANSITIONS=420} [2022-11-18 19:49:40,004 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 205 predicate places. [2022-11-18 19:49:40,004 INFO L495 AbstractCegarLoop]: Abstraction has has 482 places, 420 transitions, 2420 flow [2022-11-18 19:49:40,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 242.10526315789474) internal successors, (4600), 19 states have internal predecessors, (4600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:40,005 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:40,005 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:40,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:40,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-18 19:49:40,206 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash 764635609, now seen corresponding path program 1 times [2022-11-18 19:49:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:40,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703332249] [2022-11-18 19:49:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:40,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:49:40,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:40,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703332249] [2022-11-18 19:49:40,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703332249] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:40,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106262479] [2022-11-18 19:49:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:40,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:40,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:40,272 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:40,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:49:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:40,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:49:40,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:40,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:49:40,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:40,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:49:40,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106262479] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:40,505 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:40,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2022-11-18 19:49:40,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798740669] [2022-11-18 19:49:40,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:40,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:49:40,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:40,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:49:40,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:49:40,510 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 307 [2022-11-18 19:49:40,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 420 transitions, 2420 flow. Second operand has 10 states, 10 states have (on average 258.6) internal successors, (2586), 10 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:40,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:40,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 307 [2022-11-18 19:49:40,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:49:48,077 INFO L130 PetriNetUnfolder]: 625/3386 cut-off events. [2022-11-18 19:49:48,078 INFO L131 PetriNetUnfolder]: For 4696/4696 co-relation queries the response was YES. [2022-11-18 19:49:48,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8083 conditions, 3386 events. 625/3386 cut-off events. For 4696/4696 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 32001 event pairs, 71 based on Foata normal form. 40/2876 useless extension candidates. Maximal degree in co-relation 7972. Up to 434 conditions per place. [2022-11-18 19:49:48,939 INFO L137 encePairwiseOnDemand]: 298/307 looper letters, 79 selfloop transitions, 16 changer transitions 0/479 dead transitions. [2022-11-18 19:49:48,939 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 493 places, 479 transitions, 2898 flow [2022-11-18 19:49:48,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:49:48,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 19:49:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3153 transitions. [2022-11-18 19:49:48,944 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8558631921824105 [2022-11-18 19:49:48,944 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3153 transitions. [2022-11-18 19:49:48,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3153 transitions. [2022-11-18 19:49:48,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:49:48,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3153 transitions. [2022-11-18 19:49:48,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 262.75) internal successors, (3153), 12 states have internal predecessors, (3153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:48,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 307.0) internal successors, (3991), 13 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:48,953 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 307.0) internal successors, (3991), 13 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:48,953 INFO L175 Difference]: Start difference. First operand has 482 places, 420 transitions, 2420 flow. Second operand 12 states and 3153 transitions. [2022-11-18 19:49:48,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 493 places, 479 transitions, 2898 flow [2022-11-18 19:49:48,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 479 transitions, 2752 flow, removed 28 selfloop flow, removed 17 redundant places. [2022-11-18 19:49:49,000 INFO L231 Difference]: Finished difference. Result has 481 places, 426 transitions, 2356 flow [2022-11-18 19:49:49,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=420, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2356, PETRI_PLACES=481, PETRI_TRANSITIONS=426} [2022-11-18 19:49:49,001 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 204 predicate places. [2022-11-18 19:49:49,002 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 426 transitions, 2356 flow [2022-11-18 19:49:49,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 258.6) internal successors, (2586), 10 states have internal predecessors, (2586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:49,002 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:49:49,002 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:49:49,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:49:49,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-18 19:49:49,216 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thr1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:49:49,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:49:49,216 INFO L85 PathProgramCache]: Analyzing trace with hash -294464740, now seen corresponding path program 1 times [2022-11-18 19:49:49,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:49:49,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816859048] [2022-11-18 19:49:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:49,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:49:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:49,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:49:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816859048] [2022-11-18 19:49:49,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816859048] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:49:49,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588839123] [2022-11-18 19:49:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:49:49,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:49:49,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:49:49,331 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:49:49,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:49:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:49:49,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:49:49,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:49:49,537 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:49,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:49:49,634 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:49:49,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588839123] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:49:49,635 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:49:49,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-18 19:49:49,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897853501] [2022-11-18 19:49:49,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:49:49,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:49:49,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:49:49,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:49:49,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:49:49,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 307 [2022-11-18 19:49:49,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 426 transitions, 2356 flow. Second operand has 14 states, 14 states have (on average 247.64285714285714) internal successors, (3467), 14 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:49:49,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:49:49,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 307 [2022-11-18 19:49:49,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:50:01,819 INFO L130 PetriNetUnfolder]: 3452/9355 cut-off events. [2022-11-18 19:50:01,819 INFO L131 PetriNetUnfolder]: For 20046/20046 co-relation queries the response was YES. [2022-11-18 19:50:02,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33587 conditions, 9355 events. 3452/9355 cut-off events. For 20046/20046 co-relation queries the response was YES. Maximal size of possible extension queue 539. Compared 105772 event pairs, 602 based on Foata normal form. 15/8437 useless extension candidates. Maximal degree in co-relation 33341. Up to 3061 conditions per place. [2022-11-18 19:50:03,968 INFO L137 encePairwiseOnDemand]: 295/307 looper letters, 356 selfloop transitions, 85 changer transitions 0/749 dead transitions. [2022-11-18 19:50:03,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 749 transitions, 5059 flow [2022-11-18 19:50:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-18 19:50:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-11-18 19:50:03,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 10131 transitions. [2022-11-18 19:50:03,980 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.825 [2022-11-18 19:50:03,980 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 10131 transitions. [2022-11-18 19:50:03,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 10131 transitions. [2022-11-18 19:50:03,983 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:50:03,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 10131 transitions. [2022-11-18 19:50:03,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 253.275) internal successors, (10131), 40 states have internal predecessors, (10131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:04,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 307.0) internal successors, (12587), 41 states have internal predecessors, (12587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:04,010 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 307.0) internal successors, (12587), 41 states have internal predecessors, (12587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:04,010 INFO L175 Difference]: Start difference. First operand has 481 places, 426 transitions, 2356 flow. Second operand 40 states and 10131 transitions. [2022-11-18 19:50:04,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 749 transitions, 5059 flow [2022-11-18 19:50:04,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 749 transitions, 5033 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-11-18 19:50:04,141 INFO L231 Difference]: Finished difference. Result has 527 places, 460 transitions, 2783 flow [2022-11-18 19:50:04,142 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=426, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=2783, PETRI_PLACES=527, PETRI_TRANSITIONS=460} [2022-11-18 19:50:04,142 INFO L288 CegarLoopForPetriNet]: 277 programPoint places, 250 predicate places. [2022-11-18 19:50:04,142 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 460 transitions, 2783 flow [2022-11-18 19:50:04,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 247.64285714285714) internal successors, (3467), 14 states have internal predecessors, (3467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:04,143 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:50:04,143 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:50:04,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:50:04,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:04,350 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thr1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thr1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (and 46 more)] === [2022-11-18 19:50:04,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:50:04,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2066098746, now seen corresponding path program 1 times [2022-11-18 19:50:04,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:50:04,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730711168] [2022-11-18 19:50:04,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:04,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:50:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:50:04,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:50:04,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730711168] [2022-11-18 19:50:04,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730711168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:50:04,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294404693] [2022-11-18 19:50:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:50:04,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:50:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:50:04,415 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:50:04,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02f5fce0-3e30-4d4c-bcb2-95f558e8a6e0/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:50:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:50:04,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:50:04,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:50:04,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 19:50:04,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:50:04,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294404693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:50:04,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:50:04,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-18 19:50:04,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262989259] [2022-11-18 19:50:04,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:50:04,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:50:04,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:50:04,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:50:04,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:50:04,585 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 307 [2022-11-18 19:50:04,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 460 transitions, 2783 flow. Second operand has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:50:04,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:50:04,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 307 [2022-11-18 19:50:04,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand