./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/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_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/stack-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/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_dc11b90d-ca75-4c79-9fe1-4728a432caf8/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 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 --- 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 19:46:43,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:46:43,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:46:43,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:46:43,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:46:43,131 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:46:43,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:46:43,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:46:43,145 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:46:43,153 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:46:43,155 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:46:43,156 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:46:43,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:46:43,160 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:46:43,162 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:46:43,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:46:43,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:46:43,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:46:43,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:46:43,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:46:43,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:46:43,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:46:43,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:46:43,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:46:43,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:46:43,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:46:43,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:46:43,179 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:46:43,180 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:46:43,181 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:46:43,181 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:46:43,182 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:46:43,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:46:43,184 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:46:43,185 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:46:43,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:46:43,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:46:43,186 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:46:43,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:46:43,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:46:43,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:46:43,190 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 19:46:43,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:46:43,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:46:43,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:46:43,213 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:46:43,214 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:46:43,214 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:46:43,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:46:43,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:46:43,216 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:46:43,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:46:43,216 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:46:43,216 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:46:43,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:46:43,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:46:43,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:46:43,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:46:43,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:46:43,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:46:43,218 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 19:46:43,218 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:46:43,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:46:43,218 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:46:43,218 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:46:43,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:46:43,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:46:43,219 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:46:43,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:46:43,219 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:46:43,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:46:43,220 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:46:43,220 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:46:43,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:46:43,220 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:46:43,221 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:46:43,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:46:43,221 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_dc11b90d-ca75-4c79-9fe1-4728a432caf8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c5d098180a5596f0a60d3177354c69a5ee6da68b8191dc75b6c33b291ef0421 [2022-11-18 19:46:43,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:46:43,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:46:43,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:46:43,508 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:46:43,510 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:46:43,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/stack-2.i [2022-11-18 19:46:43,596 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/data/19da31278/6762c3ffa7764c0782404415f59d43b2/FLAG4de7b0004 [2022-11-18 19:46:44,223 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:46:44,224 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/sv-benchmarks/c/pthread/stack-2.i [2022-11-18 19:46:44,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/data/19da31278/6762c3ffa7764c0782404415f59d43b2/FLAG4de7b0004 [2022-11-18 19:46:44,446 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/data/19da31278/6762c3ffa7764c0782404415f59d43b2 [2022-11-18 19:46:44,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:46:44,450 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:46:44,451 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:46:44,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:46:44,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:46:44,462 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:46:44" (1/1) ... [2022-11-18 19:46:44,463 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@333a01fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:44, skipping insertion in model container [2022-11-18 19:46:44,463 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:46:44" (1/1) ... [2022-11-18 19:46:44,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:46:44,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:46:45,000 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_dc11b90d-ca75-4c79-9fe1-4728a432caf8/sv-benchmarks/c/pthread/stack-2.i[41520,41533] [2022-11-18 19:46:45,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:46:45,066 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:46:45,127 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_dc11b90d-ca75-4c79-9fe1-4728a432caf8/sv-benchmarks/c/pthread/stack-2.i[41520,41533] [2022-11-18 19:46:45,140 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:46:45,204 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:46:45,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45 WrapperNode [2022-11-18 19:46:45,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:46:45,205 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:46:45,206 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:46:45,206 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:46:45,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,298 INFO L138 Inliner]: procedures = 277, calls = 44, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 167 [2022-11-18 19:46:45,299 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:46:45,299 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:46:45,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:46:45,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:46:45,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,311 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,355 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,367 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:46:45,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:46:45,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:46:45,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:46:45,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (1/1) ... [2022-11-18 19:46:45,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:46:45,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:45,402 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:46:45,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:46:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 19:46:45,455 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 19:46:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 19:46:45,455 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 19:46:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:46:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:46:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:46:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:46:45,457 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 19:46:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:46:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:46:45,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:46:45,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:46:45,460 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 19:46:45,635 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:46:45,638 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:46:46,075 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:46:46,086 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:46:46,086 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 19:46:46,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:46:46 BoogieIcfgContainer [2022-11-18 19:46:46,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:46:46,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:46:46,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:46:46,116 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:46:46,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:46:44" (1/3) ... [2022-11-18 19:46:46,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e15a659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:46:46, skipping insertion in model container [2022-11-18 19:46:46,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:46:45" (2/3) ... [2022-11-18 19:46:46,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e15a659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:46:46, skipping insertion in model container [2022-11-18 19:46:46,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:46:46" (3/3) ... [2022-11-18 19:46:46,120 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2022-11-18 19:46:46,129 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:46:46,141 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:46:46,141 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-18 19:46:46,141 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:46:46,261 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 19:46:46,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 197 transitions, 410 flow [2022-11-18 19:46:46,407 INFO L130 PetriNetUnfolder]: 10/195 cut-off events. [2022-11-18 19:46:46,407 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 19:46:46,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204 conditions, 195 events. 10/195 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 504 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 149. Up to 3 conditions per place. [2022-11-18 19:46:46,420 INFO L82 GeneralOperation]: Start removeDead. Operand has 194 places, 197 transitions, 410 flow [2022-11-18 19:46:46,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 185 transitions, 379 flow [2022-11-18 19:46:46,436 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:46:46,444 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;@1a5dba2b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:46:46,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2022-11-18 19:46:46,466 INFO L130 PetriNetUnfolder]: 3/83 cut-off events. [2022-11-18 19:46:46,466 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-11-18 19:46:46,466 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:46,467 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:46,468 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:46,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash -57371915, now seen corresponding path program 1 times [2022-11-18 19:46:46,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:46,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353192471] [2022-11-18 19:46:46,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:46,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:46,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:46,931 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 19:46:46,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:46,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353192471] [2022-11-18 19:46:46,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353192471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:46,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:46,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:46,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115768950] [2022-11-18 19:46:46,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:46,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:46,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:47,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:47,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-18 19:46:47,029 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 185 transitions, 379 flow. Second operand has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 19:46:47,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:47,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-18 19:46:47,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:47,269 INFO L130 PetriNetUnfolder]: 28/367 cut-off events. [2022-11-18 19:46:47,269 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-18 19:46:47,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445 conditions, 367 events. 28/367 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1630 event pairs, 10 based on Foata normal form. 41/373 useless extension candidates. Maximal degree in co-relation 394. Up to 36 conditions per place. [2022-11-18 19:46:47,275 INFO L137 encePairwiseOnDemand]: 185/197 looper letters, 19 selfloop transitions, 4 changer transitions 0/185 dead transitions. [2022-11-18 19:46:47,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 185 transitions, 434 flow [2022-11-18 19:46:47,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:47,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:46:47,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 917 transitions. [2022-11-18 19:46:47,293 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9309644670050762 [2022-11-18 19:46:47,294 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 917 transitions. [2022-11-18 19:46:47,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 917 transitions. [2022-11-18 19:46:47,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:47,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 917 transitions. [2022-11-18 19:46:47,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.4) internal successors, (917), 5 states have internal predecessors, (917), 0 states have call successors, (0), 0 states 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 19:46:47,314 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 19:46:47,315 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 19:46:47,317 INFO L175 Difference]: Start difference. First operand has 182 places, 185 transitions, 379 flow. Second operand 5 states and 917 transitions. [2022-11-18 19:46:47,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 185 transitions, 434 flow [2022-11-18 19:46:47,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 185 transitions, 423 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:47,326 INFO L231 Difference]: Finished difference. Result has 182 places, 179 transitions, 388 flow [2022-11-18 19:46:47,329 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=356, 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=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=182, PETRI_TRANSITIONS=179} [2022-11-18 19:46:47,332 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 0 predicate places. [2022-11-18 19:46:47,333 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 179 transitions, 388 flow [2022-11-18 19:46:47,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.75) internal successors, (707), 4 states have internal predecessors, (707), 0 states have call successors, (0), 0 states 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 19:46:47,333 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:47,334 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:47,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:46:47,334 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:47,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:47,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1008564886, now seen corresponding path program 1 times [2022-11-18 19:46:47,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:47,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278065712] [2022-11-18 19:46:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:47,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:47,474 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:46:47,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:47,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278065712] [2022-11-18 19:46:47,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278065712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:47,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:47,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:47,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774179936] [2022-11-18 19:46:47,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:47,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:47,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:47,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:47,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:47,480 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-18 19:46:47,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 179 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 178.25) internal successors, (713), 4 states have internal predecessors, (713), 0 states have call successors, (0), 0 states 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 19:46:47,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:47,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-18 19:46:47,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:47,590 INFO L130 PetriNetUnfolder]: 27/364 cut-off events. [2022-11-18 19:46:47,590 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-18 19:46:47,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 364 events. 27/364 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1586 event pairs, 3 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 395. Up to 21 conditions per place. [2022-11-18 19:46:47,595 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 12 selfloop transitions, 8 changer transitions 0/182 dead transitions. [2022-11-18 19:46:47,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 182 transitions, 435 flow [2022-11-18 19:46:47,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:47,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:46:47,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 893 transitions. [2022-11-18 19:46:47,598 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065989847715736 [2022-11-18 19:46:47,599 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 893 transitions. [2022-11-18 19:46:47,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 893 transitions. [2022-11-18 19:46:47,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:47,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 893 transitions. [2022-11-18 19:46:47,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.6) internal successors, (893), 5 states have internal predecessors, (893), 0 states have call successors, (0), 0 states 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 19:46:47,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 19:46:47,605 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 19:46:47,605 INFO L175 Difference]: Start difference. First operand has 182 places, 179 transitions, 388 flow. Second operand 5 states and 893 transitions. [2022-11-18 19:46:47,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 182 transitions, 435 flow [2022-11-18 19:46:47,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 182 transitions, 433 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:47,611 INFO L231 Difference]: Finished difference. Result has 185 places, 179 transitions, 406 flow [2022-11-18 19:46:47,611 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=406, PETRI_PLACES=185, PETRI_TRANSITIONS=179} [2022-11-18 19:46:47,612 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 3 predicate places. [2022-11-18 19:46:47,612 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 179 transitions, 406 flow [2022-11-18 19:46:47,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.25) internal successors, (713), 4 states have internal predecessors, (713), 0 states have call successors, (0), 0 states 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 19:46:47,613 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:47,613 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:47,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:46:47,613 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:47,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:47,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1200739830, now seen corresponding path program 1 times [2022-11-18 19:46:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:47,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879139080] [2022-11-18 19:46:47,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:47,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:47,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:47,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:47,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879139080] [2022-11-18 19:46:47,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879139080] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:47,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888728023] [2022-11-18 19:46:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:47,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:47,822 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:47,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:46:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:47,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:46:47,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:48,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:48,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888728023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:48,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:46:48,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2022-11-18 19:46:48,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465031796] [2022-11-18 19:46:48,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:48,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:48,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:48,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:48,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:46:48,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-18 19:46:48,055 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 179 transitions, 406 flow. Second operand has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states 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 19:46:48,055 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:48,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-18 19:46:48,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:48,164 INFO L130 PetriNetUnfolder]: 26/361 cut-off events. [2022-11-18 19:46:48,164 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-11-18 19:46:48,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 361 events. 26/361 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1548 event pairs, 1 based on Foata normal form. 2/334 useless extension candidates. Maximal degree in co-relation 407. Up to 24 conditions per place. [2022-11-18 19:46:48,170 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 13 selfloop transitions, 5 changer transitions 0/180 dead transitions. [2022-11-18 19:46:48,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 180 transitions, 444 flow [2022-11-18 19:46:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:46:48,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 19:46:48,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 715 transitions. [2022-11-18 19:46:48,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9073604060913706 [2022-11-18 19:46:48,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 715 transitions. [2022-11-18 19:46:48,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 715 transitions. [2022-11-18 19:46:48,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:48,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 715 transitions. [2022-11-18 19:46:48,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 178.75) internal successors, (715), 4 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:48,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states 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 19:46:48,178 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states 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 19:46:48,178 INFO L175 Difference]: Start difference. First operand has 185 places, 179 transitions, 406 flow. Second operand 4 states and 715 transitions. [2022-11-18 19:46:48,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 180 transitions, 444 flow [2022-11-18 19:46:48,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 180 transitions, 432 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:48,183 INFO L231 Difference]: Finished difference. Result has 184 places, 178 transitions, 400 flow [2022-11-18 19:46:48,184 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=400, PETRI_PLACES=184, PETRI_TRANSITIONS=178} [2022-11-18 19:46:48,184 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 2 predicate places. [2022-11-18 19:46:48,185 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 178 transitions, 400 flow [2022-11-18 19:46:48,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states 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 19:46:48,186 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:48,186 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:48,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:48,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:48,392 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:48,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:48,393 INFO L85 PathProgramCache]: Analyzing trace with hash 874495618, now seen corresponding path program 1 times [2022-11-18 19:46:48,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:48,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110314659] [2022-11-18 19:46:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:48,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:48,616 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 19:46:48,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:48,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110314659] [2022-11-18 19:46:48,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110314659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:48,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:48,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287506953] [2022-11-18 19:46:48,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:48,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:46:48,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:48,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:46:48,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:46:48,621 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 197 [2022-11-18 19:46:48,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 178 transitions, 400 flow. Second operand has 5 states, 5 states have (on average 168.2) internal successors, (841), 5 states have internal predecessors, (841), 0 states have call successors, (0), 0 states 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 19:46:48,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:48,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 197 [2022-11-18 19:46:48,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:49,317 INFO L130 PetriNetUnfolder]: 379/2573 cut-off events. [2022-11-18 19:46:49,317 INFO L131 PetriNetUnfolder]: For 203/203 co-relation queries the response was YES. [2022-11-18 19:46:49,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3509 conditions, 2573 events. 379/2573 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 21500 event pairs, 140 based on Foata normal form. 0/2264 useless extension candidates. Maximal degree in co-relation 2614. Up to 347 conditions per place. [2022-11-18 19:46:49,341 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 58 selfloop transitions, 13 changer transitions 1/227 dead transitions. [2022-11-18 19:46:49,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 227 transitions, 650 flow [2022-11-18 19:46:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:49,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1405 transitions. [2022-11-18 19:46:49,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891497461928934 [2022-11-18 19:46:49,351 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1405 transitions. [2022-11-18 19:46:49,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1405 transitions. [2022-11-18 19:46:49,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:49,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1405 transitions. [2022-11-18 19:46:49,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.625) internal successors, (1405), 8 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states 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 19:46:49,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 19:46:49,362 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 19:46:49,362 INFO L175 Difference]: Start difference. First operand has 184 places, 178 transitions, 400 flow. Second operand 8 states and 1405 transitions. [2022-11-18 19:46:49,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 227 transitions, 650 flow [2022-11-18 19:46:49,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 227 transitions, 640 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:49,371 INFO L231 Difference]: Finished difference. Result has 194 places, 189 transitions, 488 flow [2022-11-18 19:46:49,372 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=488, PETRI_PLACES=194, PETRI_TRANSITIONS=189} [2022-11-18 19:46:49,374 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 12 predicate places. [2022-11-18 19:46:49,374 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 189 transitions, 488 flow [2022-11-18 19:46:49,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 168.2) internal successors, (841), 5 states have internal predecessors, (841), 0 states have call successors, (0), 0 states 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 19:46:49,375 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:49,375 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:49,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:46:49,376 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:49,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:49,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1070062812, now seen corresponding path program 1 times [2022-11-18 19:46:49,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:49,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180948480] [2022-11-18 19:46:49,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:49,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:49,603 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 19:46:49,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:49,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180948480] [2022-11-18 19:46:49,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180948480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:49,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:49,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:49,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949434959] [2022-11-18 19:46:49,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:49,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:49,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:49,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:49,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:49,607 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 197 [2022-11-18 19:46:49,608 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 189 transitions, 488 flow. Second operand has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 19:46:49,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:49,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 197 [2022-11-18 19:46:49,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:49,999 INFO L130 PetriNetUnfolder]: 208/1841 cut-off events. [2022-11-18 19:46:49,999 INFO L131 PetriNetUnfolder]: For 341/376 co-relation queries the response was YES. [2022-11-18 19:46:50,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2737 conditions, 1841 events. 208/1841 cut-off events. For 341/376 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 13781 event pairs, 24 based on Foata normal form. 21/1691 useless extension candidates. Maximal degree in co-relation 1978. Up to 335 conditions per place. [2022-11-18 19:46:50,017 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 33 selfloop transitions, 6 changer transitions 0/205 dead transitions. [2022-11-18 19:46:50,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 205 transitions, 611 flow [2022-11-18 19:46:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:50,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:46:50,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 889 transitions. [2022-11-18 19:46:50,020 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9025380710659898 [2022-11-18 19:46:50,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 889 transitions. [2022-11-18 19:46:50,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 889 transitions. [2022-11-18 19:46:50,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:50,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 889 transitions. [2022-11-18 19:46:50,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 177.8) internal successors, (889), 5 states have internal predecessors, (889), 0 states have call successors, (0), 0 states 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 19:46:50,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 19:46:50,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 19:46:50,026 INFO L175 Difference]: Start difference. First operand has 194 places, 189 transitions, 488 flow. Second operand 5 states and 889 transitions. [2022-11-18 19:46:50,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 205 transitions, 611 flow [2022-11-18 19:46:50,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 205 transitions, 611 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:46:50,033 INFO L231 Difference]: Finished difference. Result has 201 places, 191 transitions, 522 flow [2022-11-18 19:46:50,033 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=522, PETRI_PLACES=201, PETRI_TRANSITIONS=191} [2022-11-18 19:46:50,036 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 19 predicate places. [2022-11-18 19:46:50,037 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 191 transitions, 522 flow [2022-11-18 19:46:50,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 171.75) internal successors, (687), 4 states have internal predecessors, (687), 0 states have call successors, (0), 0 states 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 19:46:50,037 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:50,037 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:50,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:46:50,038 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:50,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:50,039 INFO L85 PathProgramCache]: Analyzing trace with hash -876850033, now seen corresponding path program 1 times [2022-11-18 19:46:50,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:50,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902045088] [2022-11-18 19:46:50,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:50,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:50,176 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 19:46:50,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:50,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902045088] [2022-11-18 19:46:50,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902045088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:50,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:50,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:50,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543131756] [2022-11-18 19:46:50,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:50,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:50,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:50,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:50,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:50,183 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-18 19:46:50,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 191 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states 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 19:46:50,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:50,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-18 19:46:50,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:50,449 INFO L130 PetriNetUnfolder]: 70/1226 cut-off events. [2022-11-18 19:46:50,449 INFO L131 PetriNetUnfolder]: For 212/278 co-relation queries the response was YES. [2022-11-18 19:46:50,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1747 conditions, 1226 events. 70/1226 cut-off events. For 212/278 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 7720 event pairs, 26 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 1468. Up to 102 conditions per place. [2022-11-18 19:46:50,463 INFO L137 encePairwiseOnDemand]: 190/197 looper letters, 19 selfloop transitions, 4 changer transitions 0/200 dead transitions. [2022-11-18 19:46:50,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 200 transitions, 592 flow [2022-11-18 19:46:50,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:50,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:46:50,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 901 transitions. [2022-11-18 19:46:50,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9147208121827411 [2022-11-18 19:46:50,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 901 transitions. [2022-11-18 19:46:50,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 901 transitions. [2022-11-18 19:46:50,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:50,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 901 transitions. [2022-11-18 19:46:50,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.2) internal successors, (901), 5 states have internal predecessors, (901), 0 states have call successors, (0), 0 states 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 19:46:50,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 19:46:50,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 19:46:50,472 INFO L175 Difference]: Start difference. First operand has 201 places, 191 transitions, 522 flow. Second operand 5 states and 901 transitions. [2022-11-18 19:46:50,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 200 transitions, 592 flow [2022-11-18 19:46:50,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 200 transitions, 590 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:50,478 INFO L231 Difference]: Finished difference. Result has 207 places, 194 transitions, 552 flow [2022-11-18 19:46:50,479 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=552, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2022-11-18 19:46:50,480 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 25 predicate places. [2022-11-18 19:46:50,480 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 552 flow [2022-11-18 19:46:50,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 176.5) internal successors, (706), 4 states have internal predecessors, (706), 0 states have call successors, (0), 0 states 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 19:46:50,480 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:50,481 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:50,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:46:50,481 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:50,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:50,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1345677913, now seen corresponding path program 1 times [2022-11-18 19:46:50,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:50,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23140639] [2022-11-18 19:46:50,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:50,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:50,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:50,639 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 19:46:50,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:50,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23140639] [2022-11-18 19:46:50,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23140639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:50,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:50,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:50,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847388038] [2022-11-18 19:46:50,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:50,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:46:50,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:50,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:46:50,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:46:50,643 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-18 19:46:50,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 552 flow. Second operand has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states 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 19:46:50,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:50,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-18 19:46:50,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:50,867 INFO L130 PetriNetUnfolder]: 47/1178 cut-off events. [2022-11-18 19:46:50,868 INFO L131 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2022-11-18 19:46:50,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 1178 events. 47/1178 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6551 event pairs, 12 based on Foata normal form. 12/1133 useless extension candidates. Maximal degree in co-relation 1406. Up to 42 conditions per place. [2022-11-18 19:46:50,879 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 12 selfloop transitions, 4 changer transitions 0/193 dead transitions. [2022-11-18 19:46:50,879 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 193 transitions, 569 flow [2022-11-18 19:46:50,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:46:50,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:46:50,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 543 transitions. [2022-11-18 19:46:50,882 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9187817258883249 [2022-11-18 19:46:50,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 543 transitions. [2022-11-18 19:46:50,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 543 transitions. [2022-11-18 19:46:50,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:50,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 543 transitions. [2022-11-18 19:46:50,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.0) internal successors, (543), 3 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 19:46:50,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:50,888 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:46:50,888 INFO L175 Difference]: Start difference. First operand has 207 places, 194 transitions, 552 flow. Second operand 3 states and 543 transitions. [2022-11-18 19:46:50,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 193 transitions, 569 flow [2022-11-18 19:46:50,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 193 transitions, 561 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 19:46:50,895 INFO L231 Difference]: Finished difference. Result has 206 places, 191 transitions, 530 flow [2022-11-18 19:46:50,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=530, PETRI_PLACES=206, PETRI_TRANSITIONS=191} [2022-11-18 19:46:50,896 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 24 predicate places. [2022-11-18 19:46:50,897 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 191 transitions, 530 flow [2022-11-18 19:46:50,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states 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 19:46:50,900 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:50,900 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:50,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:46:50,900 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1176875624, now seen corresponding path program 1 times [2022-11-18 19:46:50,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:50,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204135324] [2022-11-18 19:46:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:50,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:51,085 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 19:46:51,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:51,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204135324] [2022-11-18 19:46:51,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204135324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:51,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:51,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:51,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936812058] [2022-11-18 19:46:51,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:51,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:51,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:51,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:51,090 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-18 19:46:51,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 191 transitions, 530 flow. Second operand has 6 states, 6 states have (on average 166.5) internal successors, (999), 6 states have internal predecessors, (999), 0 states have call successors, (0), 0 states 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 19:46:51,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:51,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-18 19:46:51,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:51,533 INFO L130 PetriNetUnfolder]: 105/1515 cut-off events. [2022-11-18 19:46:51,534 INFO L131 PetriNetUnfolder]: For 197/197 co-relation queries the response was YES. [2022-11-18 19:46:51,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2288 conditions, 1515 events. 105/1515 cut-off events. For 197/197 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8964 event pairs, 38 based on Foata normal form. 6/1453 useless extension candidates. Maximal degree in co-relation 1354. Up to 142 conditions per place. [2022-11-18 19:46:51,547 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 51 selfloop transitions, 9 changer transitions 0/221 dead transitions. [2022-11-18 19:46:51,547 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 221 transitions, 733 flow [2022-11-18 19:46:51,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:51,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1373 transitions. [2022-11-18 19:46:51,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8711928934010152 [2022-11-18 19:46:51,551 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1373 transitions. [2022-11-18 19:46:51,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1373 transitions. [2022-11-18 19:46:51,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:51,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1373 transitions. [2022-11-18 19:46:51,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.625) internal successors, (1373), 8 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 19:46:51,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 19:46:51,560 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 19:46:51,561 INFO L175 Difference]: Start difference. First operand has 206 places, 191 transitions, 530 flow. Second operand 8 states and 1373 transitions. [2022-11-18 19:46:51,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 221 transitions, 733 flow [2022-11-18 19:46:51,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 221 transitions, 729 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:46:51,567 INFO L231 Difference]: Finished difference. Result has 215 places, 195 transitions, 577 flow [2022-11-18 19:46:51,568 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=577, PETRI_PLACES=215, PETRI_TRANSITIONS=195} [2022-11-18 19:46:51,568 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 33 predicate places. [2022-11-18 19:46:51,569 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 195 transitions, 577 flow [2022-11-18 19:46:51,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.5) internal successors, (999), 6 states have internal predecessors, (999), 0 states have call successors, (0), 0 states 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 19:46:51,569 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:51,570 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:51,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:46:51,570 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:51,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:51,571 INFO L85 PathProgramCache]: Analyzing trace with hash 146406757, now seen corresponding path program 1 times [2022-11-18 19:46:51,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:51,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971427875] [2022-11-18 19:46:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:51,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:51,722 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 19:46:51,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:51,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971427875] [2022-11-18 19:46:51,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971427875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:51,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:51,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:46:51,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522041614] [2022-11-18 19:46:51,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:51,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:51,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:51,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:51,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:46:51,726 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-18 19:46:51,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 195 transitions, 577 flow. Second operand has 6 states, 6 states have (on average 166.66666666666666) internal successors, (1000), 6 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 19:46:51,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:51,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-18 19:46:51,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:52,240 INFO L130 PetriNetUnfolder]: 154/2137 cut-off events. [2022-11-18 19:46:52,241 INFO L131 PetriNetUnfolder]: For 403/403 co-relation queries the response was YES. [2022-11-18 19:46:52,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3314 conditions, 2137 events. 154/2137 cut-off events. For 403/403 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 14203 event pairs, 42 based on Foata normal form. 8/2065 useless extension candidates. Maximal degree in co-relation 2681. Up to 198 conditions per place. [2022-11-18 19:46:52,261 INFO L137 encePairwiseOnDemand]: 187/197 looper letters, 53 selfloop transitions, 14 changer transitions 0/228 dead transitions. [2022-11-18 19:46:52,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 228 transitions, 830 flow [2022-11-18 19:46:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1372 transitions. [2022-11-18 19:46:52,265 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8705583756345178 [2022-11-18 19:46:52,265 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1372 transitions. [2022-11-18 19:46:52,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1372 transitions. [2022-11-18 19:46:52,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:52,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1372 transitions. [2022-11-18 19:46:52,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 171.5) internal successors, (1372), 8 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states 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 19:46:52,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 19:46:52,274 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 19:46:52,274 INFO L175 Difference]: Start difference. First operand has 215 places, 195 transitions, 577 flow. Second operand 8 states and 1372 transitions. [2022-11-18 19:46:52,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 228 transitions, 830 flow [2022-11-18 19:46:52,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 228 transitions, 822 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:52,282 INFO L231 Difference]: Finished difference. Result has 223 places, 204 transitions, 691 flow [2022-11-18 19:46:52,282 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=691, PETRI_PLACES=223, PETRI_TRANSITIONS=204} [2022-11-18 19:46:52,283 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 41 predicate places. [2022-11-18 19:46:52,283 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 204 transitions, 691 flow [2022-11-18 19:46:52,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.66666666666666) internal successors, (1000), 6 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states 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 19:46:52,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:52,284 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:52,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:46:52,285 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:52,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash -462194331, now seen corresponding path program 1 times [2022-11-18 19:46:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:52,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808677690] [2022-11-18 19:46:52,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:52,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:52,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:52,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:52,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808677690] [2022-11-18 19:46:52,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808677690] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:52,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870006047] [2022-11-18 19:46:52,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:52,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:52,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:52,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:52,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:46:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:52,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:46:52,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:52,754 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:52,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:52,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:52,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870006047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:52,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:52,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 19:46:52,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404806703] [2022-11-18 19:46:52,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:52,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 19:46:52,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:52,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 19:46:52,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:46:52,923 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 197 [2022-11-18 19:46:52,926 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 204 transitions, 691 flow. Second operand has 12 states, 12 states have (on average 173.25) internal successors, (2079), 12 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states 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 19:46:52,926 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:52,926 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 197 [2022-11-18 19:46:52,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:53,761 INFO L130 PetriNetUnfolder]: 174/2949 cut-off events. [2022-11-18 19:46:53,761 INFO L131 PetriNetUnfolder]: For 1042/1048 co-relation queries the response was YES. [2022-11-18 19:46:53,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4631 conditions, 2949 events. 174/2949 cut-off events. For 1042/1048 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 19815 event pairs, 42 based on Foata normal form. 24/2858 useless extension candidates. Maximal degree in co-relation 3847. Up to 117 conditions per place. [2022-11-18 19:46:53,788 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 65 selfloop transitions, 26 changer transitions 0/263 dead transitions. [2022-11-18 19:46:53,788 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 263 transitions, 1100 flow [2022-11-18 19:46:53,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 19:46:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 19:46:53,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3147 transitions. [2022-11-18 19:46:53,796 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8874788494077834 [2022-11-18 19:46:53,796 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3147 transitions. [2022-11-18 19:46:53,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3147 transitions. [2022-11-18 19:46:53,798 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:53,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3147 transitions. [2022-11-18 19:46:53,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 174.83333333333334) internal successors, (3147), 18 states have internal predecessors, (3147), 0 states have call successors, (0), 0 states 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 19:46:53,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 0 states 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 19:46:53,814 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 197.0) internal successors, (3743), 19 states have internal predecessors, (3743), 0 states have call successors, (0), 0 states 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 19:46:53,814 INFO L175 Difference]: Start difference. First operand has 223 places, 204 transitions, 691 flow. Second operand 18 states and 3147 transitions. [2022-11-18 19:46:53,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 263 transitions, 1100 flow [2022-11-18 19:46:53,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 263 transitions, 1092 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:53,824 INFO L231 Difference]: Finished difference. Result has 241 places, 220 transitions, 861 flow [2022-11-18 19:46:53,825 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=861, PETRI_PLACES=241, PETRI_TRANSITIONS=220} [2022-11-18 19:46:53,825 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 59 predicate places. [2022-11-18 19:46:53,825 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 220 transitions, 861 flow [2022-11-18 19:46:53,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 173.25) internal successors, (2079), 12 states have internal predecessors, (2079), 0 states have call successors, (0), 0 states 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 19:46:53,827 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:53,827 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:53,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:54,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 19:46:54,033 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1443121836, now seen corresponding path program 1 times [2022-11-18 19:46:54,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:54,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110267025] [2022-11-18 19:46:54,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:54,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:54,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:54,198 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:54,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:54,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110267025] [2022-11-18 19:46:54,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110267025] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:54,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261602198] [2022-11-18 19:46:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:54,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:54,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:54,201 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:54,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:46:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:54,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:46:54,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:54,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:54,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261602198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:54,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:46:54,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:46:54,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938220203] [2022-11-18 19:46:54,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:54,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:54,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:54,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:46:54,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 197 [2022-11-18 19:46:54,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 220 transitions, 861 flow. Second operand has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 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 19:46:54,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:54,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 197 [2022-11-18 19:46:54,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:55,342 INFO L130 PetriNetUnfolder]: 184/3132 cut-off events. [2022-11-18 19:46:55,342 INFO L131 PetriNetUnfolder]: For 1685/1691 co-relation queries the response was YES. [2022-11-18 19:46:55,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5124 conditions, 3132 events. 184/3132 cut-off events. For 1685/1691 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 21293 event pairs, 43 based on Foata normal form. 30/3037 useless extension candidates. Maximal degree in co-relation 4193. Up to 235 conditions per place. [2022-11-18 19:46:55,374 INFO L137 encePairwiseOnDemand]: 189/197 looper letters, 49 selfloop transitions, 19 changer transitions 0/240 dead transitions. [2022-11-18 19:46:55,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 240 transitions, 1086 flow [2022-11-18 19:46:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:46:55,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 19:46:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1407 transitions. [2022-11-18 19:46:55,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8927664974619289 [2022-11-18 19:46:55,378 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1407 transitions. [2022-11-18 19:46:55,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1407 transitions. [2022-11-18 19:46:55,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:55,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1407 transitions. [2022-11-18 19:46:55,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 175.875) internal successors, (1407), 8 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states 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 19:46:55,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 19:46:55,387 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 197.0) internal successors, (1773), 9 states have internal predecessors, (1773), 0 states have call successors, (0), 0 states 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 19:46:55,387 INFO L175 Difference]: Start difference. First operand has 241 places, 220 transitions, 861 flow. Second operand 8 states and 1407 transitions. [2022-11-18 19:46:55,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 240 transitions, 1086 flow [2022-11-18 19:46:55,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 240 transitions, 1029 flow, removed 22 selfloop flow, removed 5 redundant places. [2022-11-18 19:46:55,401 INFO L231 Difference]: Finished difference. Result has 243 places, 222 transitions, 906 flow [2022-11-18 19:46:55,401 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=906, PETRI_PLACES=243, PETRI_TRANSITIONS=222} [2022-11-18 19:46:55,402 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 61 predicate places. [2022-11-18 19:46:55,402 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 222 transitions, 906 flow [2022-11-18 19:46:55,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.66666666666666) internal successors, (1036), 6 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 19:46:55,403 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:55,404 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:55,410 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-18 19:46:55,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:55,610 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:55,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:55,610 INFO L85 PathProgramCache]: Analyzing trace with hash -216062704, now seen corresponding path program 1 times [2022-11-18 19:46:55,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:55,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119464639] [2022-11-18 19:46:55,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:55,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:46:55,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:55,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119464639] [2022-11-18 19:46:55,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119464639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:55,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:46:55,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:46:55,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229580283] [2022-11-18 19:46:55,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:55,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:46:55,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:55,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:46:55,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:46:55,725 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-18 19:46:55,727 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 222 transitions, 906 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 19:46:55,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:55,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-18 19:46:55,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:56,525 INFO L130 PetriNetUnfolder]: 130/3005 cut-off events. [2022-11-18 19:46:56,525 INFO L131 PetriNetUnfolder]: For 1283/1283 co-relation queries the response was YES. [2022-11-18 19:46:56,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 3005 events. 130/3005 cut-off events. For 1283/1283 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 19214 event pairs, 26 based on Foata normal form. 24/2914 useless extension candidates. Maximal degree in co-relation 4076. Up to 133 conditions per place. [2022-11-18 19:46:56,561 INFO L137 encePairwiseOnDemand]: 191/197 looper letters, 12 selfloop transitions, 8 changer transitions 0/225 dead transitions. [2022-11-18 19:46:56,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 225 transitions, 956 flow [2022-11-18 19:46:56,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:46:56,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:46:56,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 893 transitions. [2022-11-18 19:46:56,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9065989847715736 [2022-11-18 19:46:56,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 893 transitions. [2022-11-18 19:46:56,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 893 transitions. [2022-11-18 19:46:56,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:56,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 893 transitions. [2022-11-18 19:46:56,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 178.6) internal successors, (893), 5 states have internal predecessors, (893), 0 states have call successors, (0), 0 states 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 19:46:56,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 19:46:56,570 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states 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 19:46:56,570 INFO L175 Difference]: Start difference. First operand has 243 places, 222 transitions, 906 flow. Second operand 5 states and 893 transitions. [2022-11-18 19:46:56,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 225 transitions, 956 flow [2022-11-18 19:46:56,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 225 transitions, 940 flow, removed 4 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:56,648 INFO L231 Difference]: Finished difference. Result has 244 places, 222 transitions, 910 flow [2022-11-18 19:46:56,649 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=910, PETRI_PLACES=244, PETRI_TRANSITIONS=222} [2022-11-18 19:46:56,649 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 62 predicate places. [2022-11-18 19:46:56,649 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 222 transitions, 910 flow [2022-11-18 19:46:56,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states 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 19:46:56,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:56,651 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:46:56,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:46:56,651 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:56,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1891991300, now seen corresponding path program 1 times [2022-11-18 19:46:56,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:56,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401349992] [2022-11-18 19:46:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:56,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:56,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:56,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:56,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401349992] [2022-11-18 19:46:56,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401349992] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:56,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629329386] [2022-11-18 19:46:56,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:56,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:56,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:56,802 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:56,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:46:56,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:56,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:46:56,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:57,114 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:57,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:46:57,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629329386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:46:57,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:46:57,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 19:46:57,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556322058] [2022-11-18 19:46:57,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:46:57,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:46:57,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:57,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:46:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:46:57,120 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-18 19:46:57,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 222 transitions, 910 flow. Second operand has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states 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 19:46:57,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:57,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-18 19:46:57,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:46:57,913 INFO L130 PetriNetUnfolder]: 126/2977 cut-off events. [2022-11-18 19:46:57,913 INFO L131 PetriNetUnfolder]: For 1344/1344 co-relation queries the response was YES. [2022-11-18 19:46:57,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4706 conditions, 2977 events. 126/2977 cut-off events. For 1344/1344 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 19013 event pairs, 21 based on Foata normal form. 24/2886 useless extension candidates. Maximal degree in co-relation 4131. Up to 130 conditions per place. [2022-11-18 19:46:57,944 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 17 selfloop transitions, 6 changer transitions 0/228 dead transitions. [2022-11-18 19:46:57,945 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 228 transitions, 976 flow [2022-11-18 19:46:57,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:46:57,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:46:57,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1249 transitions. [2022-11-18 19:46:57,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.90572878897752 [2022-11-18 19:46:57,948 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1249 transitions. [2022-11-18 19:46:57,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1249 transitions. [2022-11-18 19:46:57,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:46:57,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1249 transitions. [2022-11-18 19:46:57,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 178.42857142857142) internal successors, (1249), 7 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states 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 19:46:57,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 19:46:57,957 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states 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 19:46:57,957 INFO L175 Difference]: Start difference. First operand has 244 places, 222 transitions, 910 flow. Second operand 7 states and 1249 transitions. [2022-11-18 19:46:57,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 228 transitions, 976 flow [2022-11-18 19:46:57,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 228 transitions, 964 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:46:57,972 INFO L231 Difference]: Finished difference. Result has 246 places, 221 transitions, 906 flow [2022-11-18 19:46:57,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=906, PETRI_PLACES=246, PETRI_TRANSITIONS=221} [2022-11-18 19:46:57,974 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 64 predicate places. [2022-11-18 19:46:57,975 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 221 transitions, 906 flow [2022-11-18 19:46:57,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 0 states have call successors, (0), 0 states 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 19:46:57,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:46:57,976 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:46:57,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:46:58,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-18 19:46:58,181 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:46:58,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:46:58,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1485255039, now seen corresponding path program 1 times [2022-11-18 19:46:58,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:46:58,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009297283] [2022-11-18 19:46:58,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:58,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:46:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:58,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:46:58,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009297283] [2022-11-18 19:46:58,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009297283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:46:58,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197468246] [2022-11-18 19:46:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:46:58,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:46:58,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:46:58,419 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:46:58,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:46:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:46:58,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:46:58,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:46:58,794 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:58,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:46:59,100 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:46:59,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197468246] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:46:59,101 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:46:59,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 19:46:59,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415275915] [2022-11-18 19:46:59,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:46:59,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 19:46:59,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:46:59,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 19:46:59,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:46:59,108 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-18 19:46:59,111 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 221 transitions, 906 flow. Second operand has 16 states, 16 states have (on average 167.5) internal successors, (2680), 16 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states 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 19:46:59,111 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:46:59,111 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-18 19:46:59,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:00,340 INFO L130 PetriNetUnfolder]: 249/3508 cut-off events. [2022-11-18 19:47:00,340 INFO L131 PetriNetUnfolder]: For 2031/2031 co-relation queries the response was YES. [2022-11-18 19:47:00,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5876 conditions, 3508 events. 249/3508 cut-off events. For 2031/2031 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 25883 event pairs, 62 based on Foata normal form. 38/3408 useless extension candidates. Maximal degree in co-relation 4883. Up to 120 conditions per place. [2022-11-18 19:47:00,365 INFO L137 encePairwiseOnDemand]: 184/197 looper letters, 81 selfloop transitions, 47 changer transitions 0/288 dead transitions. [2022-11-18 19:47:00,366 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 288 transitions, 1408 flow [2022-11-18 19:47:00,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:47:00,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 19:47:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3880 transitions. [2022-11-18 19:47:00,375 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8563231074817921 [2022-11-18 19:47:00,376 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3880 transitions. [2022-11-18 19:47:00,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3880 transitions. [2022-11-18 19:47:00,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:00,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3880 transitions. [2022-11-18 19:47:00,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 168.69565217391303) internal successors, (3880), 23 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states 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 19:47:00,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 197.0) internal successors, (4728), 24 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states 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 19:47:00,399 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 197.0) internal successors, (4728), 24 states have internal predecessors, (4728), 0 states have call successors, (0), 0 states 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 19:47:00,399 INFO L175 Difference]: Start difference. First operand has 246 places, 221 transitions, 906 flow. Second operand 23 states and 3880 transitions. [2022-11-18 19:47:00,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 288 transitions, 1408 flow [2022-11-18 19:47:00,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 288 transitions, 1397 flow, removed 1 selfloop flow, removed 5 redundant places. [2022-11-18 19:47:00,418 INFO L231 Difference]: Finished difference. Result has 267 places, 233 transitions, 1105 flow [2022-11-18 19:47:00,419 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=867, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1105, PETRI_PLACES=267, PETRI_TRANSITIONS=233} [2022-11-18 19:47:00,420 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 85 predicate places. [2022-11-18 19:47:00,420 INFO L495 AbstractCegarLoop]: Abstraction has has 267 places, 233 transitions, 1105 flow [2022-11-18 19:47:00,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 167.5) internal successors, (2680), 16 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states 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 19:47:00,421 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:00,422 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:00,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:00,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 19:47:00,628 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:47:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1948821053, now seen corresponding path program 1 times [2022-11-18 19:47:00,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:00,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209662199] [2022-11-18 19:47:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:00,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:00,909 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:00,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:00,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209662199] [2022-11-18 19:47:00,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209662199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:00,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852041172] [2022-11-18 19:47:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:00,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:00,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:00,912 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:00,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:47:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:01,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:47:01,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:01,262 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:01,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:01,513 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:01,513 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852041172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:01,513 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:01,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2022-11-18 19:47:01,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700497723] [2022-11-18 19:47:01,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:01,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:47:01,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:01,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:47:01,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:47:01,520 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-18 19:47:01,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 233 transitions, 1105 flow. Second operand has 14 states, 14 states have (on average 168.14285714285714) internal successors, (2354), 14 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states 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 19:47:01,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:01,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-18 19:47:01,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:03,187 INFO L130 PetriNetUnfolder]: 396/5336 cut-off events. [2022-11-18 19:47:03,187 INFO L131 PetriNetUnfolder]: For 3610/3610 co-relation queries the response was YES. [2022-11-18 19:47:03,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9133 conditions, 5336 events. 396/5336 cut-off events. For 3610/3610 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 41940 event pairs, 58 based on Foata normal form. 53/5187 useless extension candidates. Maximal degree in co-relation 8106. Up to 266 conditions per place. [2022-11-18 19:47:03,228 INFO L137 encePairwiseOnDemand]: 185/197 looper letters, 118 selfloop transitions, 78 changer transitions 0/356 dead transitions. [2022-11-18 19:47:03,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 356 transitions, 2355 flow [2022-11-18 19:47:03,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 19:47:03,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 19:47:03,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4061 transitions. [2022-11-18 19:47:03,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8589255499153976 [2022-11-18 19:47:03,237 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4061 transitions. [2022-11-18 19:47:03,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4061 transitions. [2022-11-18 19:47:03,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:03,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4061 transitions. [2022-11-18 19:47:03,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 169.20833333333334) internal successors, (4061), 24 states have internal predecessors, (4061), 0 states have call successors, (0), 0 states 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 19:47:03,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 197.0) internal successors, (4925), 25 states have internal predecessors, (4925), 0 states have call successors, (0), 0 states 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 19:47:03,254 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 197.0) internal successors, (4925), 25 states have internal predecessors, (4925), 0 states have call successors, (0), 0 states 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 19:47:03,254 INFO L175 Difference]: Start difference. First operand has 267 places, 233 transitions, 1105 flow. Second operand 24 states and 4061 transitions. [2022-11-18 19:47:03,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 356 transitions, 2355 flow [2022-11-18 19:47:03,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 356 transitions, 2178 flow, removed 78 selfloop flow, removed 5 redundant places. [2022-11-18 19:47:03,278 INFO L231 Difference]: Finished difference. Result has 294 places, 287 transitions, 1841 flow [2022-11-18 19:47:03,279 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1841, PETRI_PLACES=294, PETRI_TRANSITIONS=287} [2022-11-18 19:47:03,279 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 112 predicate places. [2022-11-18 19:47:03,280 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 287 transitions, 1841 flow [2022-11-18 19:47:03,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 168.14285714285714) internal successors, (2354), 14 states have internal predecessors, (2354), 0 states have call successors, (0), 0 states 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 19:47:03,281 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:03,281 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:03,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:03,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 19:47:03,487 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:47:03,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash -504410396, now seen corresponding path program 2 times [2022-11-18 19:47:03,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:03,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193437471] [2022-11-18 19:47:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:03,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:03,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:03,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193437471] [2022-11-18 19:47:03,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193437471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:03,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69571074] [2022-11-18 19:47:03,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:47:03,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:03,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:03,929 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:03,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:47:04,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:47:04,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:04,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:47:04,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:04,495 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:04,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:04,945 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:04,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69571074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:04,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:04,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2022-11-18 19:47:04,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874203442] [2022-11-18 19:47:04,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:04,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:47:04,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:04,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:47:04,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:47:04,950 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 197 [2022-11-18 19:47:04,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 287 transitions, 1841 flow. Second operand has 24 states, 24 states have (on average 173.625) internal successors, (4167), 24 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states 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 19:47:04,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:04,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 197 [2022-11-18 19:47:04,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:07,699 INFO L130 PetriNetUnfolder]: 464/7961 cut-off events. [2022-11-18 19:47:07,700 INFO L131 PetriNetUnfolder]: For 7969/7972 co-relation queries the response was YES. [2022-11-18 19:47:07,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13927 conditions, 7961 events. 464/7961 cut-off events. For 7969/7972 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 58908 event pairs, 128 based on Foata normal form. 48/7684 useless extension candidates. Maximal degree in co-relation 12894. Up to 405 conditions per place. [2022-11-18 19:47:07,763 INFO L137 encePairwiseOnDemand]: 188/197 looper letters, 176 selfloop transitions, 70 changer transitions 0/426 dead transitions. [2022-11-18 19:47:07,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 426 transitions, 3164 flow [2022-11-18 19:47:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:47:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 19:47:07,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5788 transitions. [2022-11-18 19:47:07,773 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.890324565451469 [2022-11-18 19:47:07,773 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5788 transitions. [2022-11-18 19:47:07,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5788 transitions. [2022-11-18 19:47:07,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:07,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5788 transitions. [2022-11-18 19:47:07,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 175.3939393939394) internal successors, (5788), 33 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states 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 19:47:07,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 197.0) internal successors, (6698), 34 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states 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 19:47:07,801 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 197.0) internal successors, (6698), 34 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states 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 19:47:07,802 INFO L175 Difference]: Start difference. First operand has 294 places, 287 transitions, 1841 flow. Second operand 33 states and 5788 transitions. [2022-11-18 19:47:07,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 426 transitions, 3164 flow [2022-11-18 19:47:07,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 426 transitions, 3036 flow, removed 60 selfloop flow, removed 3 redundant places. [2022-11-18 19:47:07,851 INFO L231 Difference]: Finished difference. Result has 330 places, 321 transitions, 2357 flow [2022-11-18 19:47:07,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=1713, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2357, PETRI_PLACES=330, PETRI_TRANSITIONS=321} [2022-11-18 19:47:07,852 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 148 predicate places. [2022-11-18 19:47:07,852 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 321 transitions, 2357 flow [2022-11-18 19:47:07,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 173.625) internal successors, (4167), 24 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states 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 19:47:07,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:07,854 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:07,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:08,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 19:47:08,061 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:47:08,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:08,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1337061813, now seen corresponding path program 1 times [2022-11-18 19:47:08,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:08,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277658189] [2022-11-18 19:47:08,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:08,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:08,535 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 221 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 19:47:08,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:08,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277658189] [2022-11-18 19:47:08,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277658189] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:08,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939701042] [2022-11-18 19:47:08,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:08,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:08,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:08,538 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:08,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:47:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:08,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:47:08,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 19:47:09,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 19:47:09,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939701042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:09,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:09,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 17 [2022-11-18 19:47:09,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115563551] [2022-11-18 19:47:09,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:09,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:47:09,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:09,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:47:09,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:47:09,574 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-18 19:47:09,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 321 transitions, 2357 flow. Second operand has 18 states, 18 states have (on average 168.11111111111111) internal successors, (3026), 18 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states 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 19:47:09,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:09,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-18 19:47:09,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:13,981 INFO L130 PetriNetUnfolder]: 904/12121 cut-off events. [2022-11-18 19:47:13,981 INFO L131 PetriNetUnfolder]: For 12114/12114 co-relation queries the response was YES. [2022-11-18 19:47:14,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21889 conditions, 12121 events. 904/12121 cut-off events. For 12114/12114 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 108814 event pairs, 211 based on Foata normal form. 23/11670 useless extension candidates. Maximal degree in co-relation 20696. Up to 549 conditions per place. [2022-11-18 19:47:14,109 INFO L137 encePairwiseOnDemand]: 185/197 looper letters, 190 selfloop transitions, 204 changer transitions 0/554 dead transitions. [2022-11-18 19:47:14,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 554 transitions, 5037 flow [2022-11-18 19:47:14,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 19:47:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-11-18 19:47:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6406 transitions. [2022-11-18 19:47:14,119 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8557306973016298 [2022-11-18 19:47:14,119 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6406 transitions. [2022-11-18 19:47:14,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6406 transitions. [2022-11-18 19:47:14,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:14,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6406 transitions. [2022-11-18 19:47:14,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 168.57894736842104) internal successors, (6406), 38 states have internal predecessors, (6406), 0 states have call successors, (0), 0 states 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 19:47:14,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 197.0) internal successors, (7683), 39 states have internal predecessors, (7683), 0 states have call successors, (0), 0 states 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 19:47:14,147 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 197.0) internal successors, (7683), 39 states have internal predecessors, (7683), 0 states have call successors, (0), 0 states 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 19:47:14,148 INFO L175 Difference]: Start difference. First operand has 330 places, 321 transitions, 2357 flow. Second operand 38 states and 6406 transitions. [2022-11-18 19:47:14,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 554 transitions, 5037 flow [2022-11-18 19:47:14,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 554 transitions, 4915 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-11-18 19:47:14,236 INFO L231 Difference]: Finished difference. Result has 369 places, 440 transitions, 4412 flow [2022-11-18 19:47:14,237 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2259, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4412, PETRI_PLACES=369, PETRI_TRANSITIONS=440} [2022-11-18 19:47:14,237 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 187 predicate places. [2022-11-18 19:47:14,237 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 440 transitions, 4412 flow [2022-11-18 19:47:14,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 168.11111111111111) internal successors, (3026), 18 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states 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 19:47:14,239 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:14,239 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:14,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:14,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 19:47:14,447 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:47:14,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:14,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1752098139, now seen corresponding path program 2 times [2022-11-18 19:47:14,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:14,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341573143] [2022-11-18 19:47:14,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:14,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:14,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:15,179 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:15,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:15,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341573143] [2022-11-18 19:47:15,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341573143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:15,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740251518] [2022-11-18 19:47:15,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:47:15,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:15,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:15,183 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:15,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:47:15,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:47:15,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:47:15,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:47:15,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:15,871 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:15,871 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:16,604 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 364 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:47:16,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740251518] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:16,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:16,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 25 [2022-11-18 19:47:16,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676675283] [2022-11-18 19:47:16,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:16,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:47:16,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:16,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:47:16,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-11-18 19:47:16,613 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-18 19:47:16,618 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 440 transitions, 4412 flow. Second operand has 26 states, 26 states have (on average 168.07692307692307) internal successors, (4370), 26 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states 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 19:47:16,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:16,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-18 19:47:16,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:24,013 INFO L130 PetriNetUnfolder]: 1425/18098 cut-off events. [2022-11-18 19:47:24,013 INFO L131 PetriNetUnfolder]: For 22933/22933 co-relation queries the response was YES. [2022-11-18 19:47:24,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33523 conditions, 18098 events. 1425/18098 cut-off events. For 22933/22933 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 183070 event pairs, 195 based on Foata normal form. 90/17509 useless extension candidates. Maximal degree in co-relation 32292. Up to 790 conditions per place. [2022-11-18 19:47:24,229 INFO L137 encePairwiseOnDemand]: 185/197 looper letters, 308 selfloop transitions, 350 changer transitions 0/818 dead transitions. [2022-11-18 19:47:24,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 818 transitions, 9624 flow [2022-11-18 19:47:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-11-18 19:47:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-11-18 19:47:24,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8613 transitions. [2022-11-18 19:47:24,240 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.857270827112571 [2022-11-18 19:47:24,240 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8613 transitions. [2022-11-18 19:47:24,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8613 transitions. [2022-11-18 19:47:24,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:24,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8613 transitions. [2022-11-18 19:47:24,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 168.88235294117646) internal successors, (8613), 51 states have internal predecessors, (8613), 0 states have call successors, (0), 0 states 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 19:47:24,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 197.0) internal successors, (10244), 52 states have internal predecessors, (10244), 0 states have call successors, (0), 0 states 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 19:47:24,281 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 197.0) internal successors, (10244), 52 states have internal predecessors, (10244), 0 states have call successors, (0), 0 states 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 19:47:24,281 INFO L175 Difference]: Start difference. First operand has 369 places, 440 transitions, 4412 flow. Second operand 51 states and 8613 transitions. [2022-11-18 19:47:24,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 818 transitions, 9624 flow [2022-11-18 19:47:24,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 818 transitions, 9390 flow, removed 113 selfloop flow, removed 3 redundant places. [2022-11-18 19:47:24,468 INFO L231 Difference]: Finished difference. Result has 429 places, 626 transitions, 8069 flow [2022-11-18 19:47:24,470 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8069, PETRI_PLACES=429, PETRI_TRANSITIONS=626} [2022-11-18 19:47:24,471 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 247 predicate places. [2022-11-18 19:47:24,471 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 626 transitions, 8069 flow [2022-11-18 19:47:24,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 168.07692307692307) internal successors, (4370), 26 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states 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 19:47:24,472 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:24,473 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:24,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:24,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 19:47:24,679 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:47:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:24,679 INFO L85 PathProgramCache]: Analyzing trace with hash -201192795, now seen corresponding path program 1 times [2022-11-18 19:47:24,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:24,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266794753] [2022-11-18 19:47:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:24,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:25,519 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 19:47:25,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:25,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266794753] [2022-11-18 19:47:25,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266794753] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:25,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622166146] [2022-11-18 19:47:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:25,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:25,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:25,521 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:25,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:47:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:25,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:47:25,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:26,321 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 19:47:26,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:27,073 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-18 19:47:27,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622166146] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:27,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:27,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 23 [2022-11-18 19:47:27,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652280838] [2022-11-18 19:47:27,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:27,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-18 19:47:27,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:27,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-18 19:47:27,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2022-11-18 19:47:27,081 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-18 19:47:27,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 626 transitions, 8069 flow. Second operand has 24 states, 24 states have (on average 168.5) internal successors, (4044), 24 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states 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 19:47:27,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:27,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-18 19:47:27,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:47:39,915 INFO L130 PetriNetUnfolder]: 2247/27436 cut-off events. [2022-11-18 19:47:39,916 INFO L131 PetriNetUnfolder]: For 44753/44753 co-relation queries the response was YES. [2022-11-18 19:47:40,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52342 conditions, 27436 events. 2247/27436 cut-off events. For 44753/44753 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 306808 event pairs, 210 based on Foata normal form. 134/26547 useless extension candidates. Maximal degree in co-relation 51448. Up to 1278 conditions per place. [2022-11-18 19:47:40,345 INFO L137 encePairwiseOnDemand]: 185/197 looper letters, 196 selfloop transitions, 719 changer transitions 0/1075 dead transitions. [2022-11-18 19:47:40,346 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 1075 transitions, 16180 flow [2022-11-18 19:47:40,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-18 19:47:40,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-18 19:47:40,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 6565 transitions. [2022-11-18 19:47:40,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8544839255499154 [2022-11-18 19:47:40,355 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 6565 transitions. [2022-11-18 19:47:40,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 6565 transitions. [2022-11-18 19:47:40,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:47:40,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 6565 transitions. [2022-11-18 19:47:40,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 168.33333333333334) internal successors, (6565), 39 states have internal predecessors, (6565), 0 states have call successors, (0), 0 states 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 19:47:40,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 197.0) internal successors, (7880), 40 states have internal predecessors, (7880), 0 states have call successors, (0), 0 states 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 19:47:40,379 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 197.0) internal successors, (7880), 40 states have internal predecessors, (7880), 0 states have call successors, (0), 0 states 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 19:47:40,379 INFO L175 Difference]: Start difference. First operand has 429 places, 626 transitions, 8069 flow. Second operand 39 states and 6565 transitions. [2022-11-18 19:47:40,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 1075 transitions, 16180 flow [2022-11-18 19:47:40,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 1075 transitions, 15008 flow, removed 357 selfloop flow, removed 15 redundant places. [2022-11-18 19:47:40,763 INFO L231 Difference]: Finished difference. Result has 449 places, 969 transitions, 14597 flow [2022-11-18 19:47:40,763 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=7127, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=388, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14597, PETRI_PLACES=449, PETRI_TRANSITIONS=969} [2022-11-18 19:47:40,764 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 267 predicate places. [2022-11-18 19:47:40,764 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 969 transitions, 14597 flow [2022-11-18 19:47:40,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 168.5) internal successors, (4044), 24 states have internal predecessors, (4044), 0 states have call successors, (0), 0 states 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 19:47:40,765 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:47:40,765 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:47:40,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:47:40,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:40,966 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:47:40,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:47:40,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1104503340, now seen corresponding path program 1 times [2022-11-18 19:47:40,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:47:40,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513241610] [2022-11-18 19:47:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:40,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:47:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-18 19:47:41,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:47:41,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513241610] [2022-11-18 19:47:41,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513241610] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:47:41,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676171660] [2022-11-18 19:47:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:47:41,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:47:41,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:47:41,809 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:47:41,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:47:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:47:42,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 678 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:47:42,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:47:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-18 19:47:42,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:47:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 443 backedges. 0 proven. 361 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-18 19:47:43,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676171660] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:47:43,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:47:43,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 21 [2022-11-18 19:47:43,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142057225] [2022-11-18 19:47:43,395 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:47:43,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:47:43,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:47:43,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:47:43,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:47:43,401 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 197 [2022-11-18 19:47:43,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 969 transitions, 14597 flow. Second operand has 22 states, 22 states have (on average 168.45454545454547) internal successors, (3706), 22 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states 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 19:47:43,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:47:43,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 197 [2022-11-18 19:47:43,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:48:05,124 INFO L130 PetriNetUnfolder]: 3421/40419 cut-off events. [2022-11-18 19:48:05,125 INFO L131 PetriNetUnfolder]: For 72732/72732 co-relation queries the response was YES. [2022-11-18 19:48:05,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79299 conditions, 40419 events. 3421/40419 cut-off events. For 72732/72732 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 491573 event pairs, 890 based on Foata normal form. 179/39060 useless extension candidates. Maximal degree in co-relation 78033. Up to 2084 conditions per place. [2022-11-18 19:48:05,832 INFO L137 encePairwiseOnDemand]: 186/197 looper letters, 245 selfloop transitions, 1190 changer transitions 0/1595 dead transitions. [2022-11-18 19:48:05,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 1595 transitions, 26507 flow [2022-11-18 19:48:05,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 19:48:05,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-11-18 19:48:05,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 5580 transitions. [2022-11-18 19:48:05,837 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8583294877711122 [2022-11-18 19:48:05,837 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 5580 transitions. [2022-11-18 19:48:05,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 5580 transitions. [2022-11-18 19:48:05,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:48:05,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 5580 transitions. [2022-11-18 19:48:05,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 169.0909090909091) internal successors, (5580), 33 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states 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 19:48:05,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 197.0) internal successors, (6698), 34 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states 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 19:48:05,858 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 197.0) internal successors, (6698), 34 states have internal predecessors, (6698), 0 states have call successors, (0), 0 states 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 19:48:05,858 INFO L175 Difference]: Start difference. First operand has 449 places, 969 transitions, 14597 flow. Second operand 33 states and 5580 transitions. [2022-11-18 19:48:05,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 1595 transitions, 26507 flow [2022-11-18 19:48:06,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 1595 transitions, 25629 flow, removed 408 selfloop flow, removed 5 redundant places. [2022-11-18 19:48:06,412 INFO L231 Difference]: Finished difference. Result has 473 places, 1456 transitions, 25220 flow [2022-11-18 19:48:06,413 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=13664, PETRI_DIFFERENCE_MINUEND_PLACES=432, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=944, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=710, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=25220, PETRI_PLACES=473, PETRI_TRANSITIONS=1456} [2022-11-18 19:48:06,414 INFO L288 CegarLoopForPetriNet]: 182 programPoint places, 291 predicate places. [2022-11-18 19:48:06,414 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 1456 transitions, 25220 flow [2022-11-18 19:48:06,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 168.45454545454547) internal successors, (3706), 22 states have internal predecessors, (3706), 0 states have call successors, (0), 0 states 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 19:48:06,414 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:48:06,415 INFO L209 CegarLoopForPetriNet]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:06,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:48:06,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:06,615 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-11-18 19:48:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:48:06,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1884378685, now seen corresponding path program 2 times [2022-11-18 19:48:06,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:48:06,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679646955] [2022-11-18 19:48:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:48:06,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:48:06,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:48:07,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 0 proven. 1182 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 19:48:07,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:48:07,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679646955] [2022-11-18 19:48:07,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679646955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:48:07,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965861582] [2022-11-18 19:48:07,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:48:07,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:48:07,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:48:07,904 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:48:07,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc11b90d-ca75-4c79-9fe1-4728a432caf8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:48:08,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:48:08,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:48:08,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:48:08,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:48:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1197 backedges. 1092 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-18 19:48:08,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:48:08,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965861582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:48:08,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:48:08,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 30 [2022-11-18 19:48:08,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902907255] [2022-11-18 19:48:08,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:48:08,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:48:08,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:48:08,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:48:08,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:48:08,901 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 175 out of 197 [2022-11-18 19:48:08,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 1456 transitions, 25220 flow. Second operand has 13 states, 13 states have (on average 178.15384615384616) internal successors, (2316), 13 states have internal predecessors, (2316), 0 states have call successors, (0), 0 states 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 19:48:08,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:48:08,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 175 of 197 [2022-11-18 19:48:08,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand