./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/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_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/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_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/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 be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea --- 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 20:32:14,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:32:14,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:32:14,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:32:14,152 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:32:14,153 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:32:14,154 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:32:14,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:32:14,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:32:14,167 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:32:14,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:32:14,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:32:14,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:32:14,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:32:14,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:32:14,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:32:14,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:32:14,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:32:14,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:32:14,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:32:14,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:32:14,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:32:14,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:32:14,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:32:14,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:32:14,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:32:14,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:32:14,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:32:14,201 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:32:14,202 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:32:14,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:32:14,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:32:14,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:32:14,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:32:14,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:32:14,206 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:32:14,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:32:14,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:32:14,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:32:14,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:32:14,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:32:14,210 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:32:14,235 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:32:14,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:32:14,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:32:14,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:32:14,236 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:32:14,237 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:32:14,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:32:14,237 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:32:14,238 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:32:14,238 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:32:14,238 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:32:14,238 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:32:14,238 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:32:14,239 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:32:14,239 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:32:14,239 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:32:14,239 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:32:14,239 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:32:14,240 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:32:14,240 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:32:14,240 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:32:14,240 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:32:14,240 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:32:14,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:32:14,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:32:14,241 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:32:14,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:32:14,241 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:32:14,241 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:32:14,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:32:14,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:32:14,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:32:14,242 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:32:14,242 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:32:14,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:32:14,243 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_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be2a0d1eee532c8ad9f827ec91fa18dbacb100bdaebd8afe9a7f9b56098458ea [2022-11-18 20:32:14,496 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:32:14,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:32:14,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:32:14,532 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:32:14,533 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:32:14,534 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-11-18 20:32:14,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/data/645ef69ce/ab8b993e8cf246e68bcc9040e7da274b/FLAGf48a68dda [2022-11-18 20:32:15,119 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:32:15,123 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c [2022-11-18 20:32:15,131 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/data/645ef69ce/ab8b993e8cf246e68bcc9040e7da274b/FLAGf48a68dda [2022-11-18 20:32:15,462 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/data/645ef69ce/ab8b993e8cf246e68bcc9040e7da274b [2022-11-18 20:32:15,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:32:15,466 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:32:15,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:32:15,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:32:15,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:32:15,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,474 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a7549ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15, skipping insertion in model container [2022-11-18 20:32:15,474 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:32:15,499 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:32:15,709 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_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-11-18 20:32:15,713 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:32:15,722 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:32:15,746 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_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/sv-benchmarks/c/weaver/chl-file-item-subst.wvr.c[3015,3028] [2022-11-18 20:32:15,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:32:15,763 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:32:15,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15 WrapperNode [2022-11-18 20:32:15,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:32:15,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:32:15,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:32:15,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:32:15,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,820 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 239 [2022-11-18 20:32:15,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:32:15,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:32:15,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:32:15,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:32:15,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,845 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:32:15,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:32:15,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:32:15,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:32:15,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (1/1) ... [2022-11-18 20:32:15,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:32:15,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:32:15,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:32:15,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:32:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:32:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:32:15,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:32:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:32:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:32:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:32:15,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:32:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:32:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:32:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:32:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:32:15,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:32:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:32:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:32:15,942 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 20:32:16,047 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:32:16,051 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:32:16,513 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:32:16,526 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:32:16,526 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-18 20:32:16,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:32:16 BoogieIcfgContainer [2022-11-18 20:32:16,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:32:16,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:32:16,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:32:16,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:32:16,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:32:15" (1/3) ... [2022-11-18 20:32:16,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d08a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:32:16, skipping insertion in model container [2022-11-18 20:32:16,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:32:15" (2/3) ... [2022-11-18 20:32:16,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d08a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:32:16, skipping insertion in model container [2022-11-18 20:32:16,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:32:16" (3/3) ... [2022-11-18 20:32:16,539 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-subst.wvr.c [2022-11-18 20:32:16,550 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:32:16,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:32:16,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-18 20:32:16,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:32:16,755 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 20:32:16,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 321 transitions, 666 flow [2022-11-18 20:32:17,056 INFO L130 PetriNetUnfolder]: 26/318 cut-off events. [2022-11-18 20:32:17,056 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 20:32:17,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331 conditions, 318 events. 26/318 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 878 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 235. Up to 2 conditions per place. [2022-11-18 20:32:17,071 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 321 transitions, 666 flow [2022-11-18 20:32:17,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 289 transitions, 593 flow [2022-11-18 20:32:17,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:32:17,128 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;@7f58ed27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:32:17,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-18 20:32:17,166 INFO L130 PetriNetUnfolder]: 6/118 cut-off events. [2022-11-18 20:32:17,167 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:32:17,167 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:17,168 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 20:32:17,169 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:17,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:17,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1491451842, now seen corresponding path program 1 times [2022-11-18 20:32:17,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:17,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130691099] [2022-11-18 20:32:17,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:17,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:17,746 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 20:32:17,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:17,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130691099] [2022-11-18 20:32:17,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130691099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:17,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:17,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:17,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964999086] [2022-11-18 20:32:17,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:17,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:17,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:17,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:17,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:17,808 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-18 20:32:17,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 289 transitions, 593 flow. Second operand has 6 states, 6 states have (on average 281.8333333333333) internal successors, (1691), 6 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:17,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:17,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-18 20:32:17,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:18,188 INFO L130 PetriNetUnfolder]: 78/534 cut-off events. [2022-11-18 20:32:18,188 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2022-11-18 20:32:18,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 769 conditions, 534 events. 78/534 cut-off events. For 61/61 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2738 event pairs, 2 based on Foata normal form. 119/585 useless extension candidates. Maximal degree in co-relation 656. Up to 119 conditions per place. [2022-11-18 20:32:18,202 INFO L137 encePairwiseOnDemand]: 309/321 looper letters, 33 selfloop transitions, 5 changer transitions 0/290 dead transitions. [2022-11-18 20:32:18,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 290 transitions, 689 flow [2022-11-18 20:32:18,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:32:18,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:32:18,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1733 transitions. [2022-11-18 20:32:18,234 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8997923156801662 [2022-11-18 20:32:18,235 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1733 transitions. [2022-11-18 20:32:18,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1733 transitions. [2022-11-18 20:32:18,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:18,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1733 transitions. [2022-11-18 20:32:18,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 288.8333333333333) internal successors, (1733), 6 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,261 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,263 INFO L175 Difference]: Start difference. First operand has 275 places, 289 transitions, 593 flow. Second operand 6 states and 1733 transitions. [2022-11-18 20:32:18,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 290 transitions, 689 flow [2022-11-18 20:32:18,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 290 transitions, 670 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:32:18,276 INFO L231 Difference]: Finished difference. Result has 274 places, 282 transitions, 580 flow [2022-11-18 20:32:18,278 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=580, PETRI_PLACES=274, PETRI_TRANSITIONS=282} [2022-11-18 20:32:18,282 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, -1 predicate places. [2022-11-18 20:32:18,282 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 282 transitions, 580 flow [2022-11-18 20:32:18,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.8333333333333) internal successors, (1691), 6 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,284 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:18,284 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] [2022-11-18 20:32:18,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:32:18,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1009632342, now seen corresponding path program 1 times [2022-11-18 20:32:18,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:18,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255296476] [2022-11-18 20:32:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:18,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:18,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:18,490 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 20:32:18,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:18,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255296476] [2022-11-18 20:32:18,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255296476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:18,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:18,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:18,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228946270] [2022-11-18 20:32:18,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:18,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:32:18,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:18,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:32:18,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:18,497 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 20:32:18,499 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 282 transitions, 580 flow. Second operand has 4 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,499 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:18,499 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 20:32:18,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:18,818 INFO L130 PetriNetUnfolder]: 101/880 cut-off events. [2022-11-18 20:32:18,819 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2022-11-18 20:32:18,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1133 conditions, 880 events. 101/880 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5705 event pairs, 24 based on Foata normal form. 0/748 useless extension candidates. Maximal degree in co-relation 712. Up to 71 conditions per place. [2022-11-18 20:32:18,835 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 37 selfloop transitions, 4 changer transitions 0/296 dead transitions. [2022-11-18 20:32:18,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 296 transitions, 698 flow [2022-11-18 20:32:18,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:32:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:32:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1175 transitions. [2022-11-18 20:32:18,839 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9151090342679128 [2022-11-18 20:32:18,840 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1175 transitions. [2022-11-18 20:32:18,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1175 transitions. [2022-11-18 20:32:18,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:18,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1175 transitions. [2022-11-18 20:32:18,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.75) internal successors, (1175), 4 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,848 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,848 INFO L175 Difference]: Start difference. First operand has 274 places, 282 transitions, 580 flow. Second operand 4 states and 1175 transitions. [2022-11-18 20:32:18,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 296 transitions, 698 flow [2022-11-18 20:32:18,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 296 transitions, 689 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:32:18,858 INFO L231 Difference]: Finished difference. Result has 275 places, 283 transitions, 595 flow [2022-11-18 20:32:18,859 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=595, PETRI_PLACES=275, PETRI_TRANSITIONS=283} [2022-11-18 20:32:18,860 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 0 predicate places. [2022-11-18 20:32:18,860 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 283 transitions, 595 flow [2022-11-18 20:32:18,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 284.75) internal successors, (1139), 4 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:18,862 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:18,863 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] [2022-11-18 20:32:18,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:32:18,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:18,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:18,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1879201343, now seen corresponding path program 1 times [2022-11-18 20:32:18,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:18,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416233192] [2022-11-18 20:32:18,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:18,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:19,066 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 20:32:19,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:19,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416233192] [2022-11-18 20:32:19,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416233192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:19,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:19,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:19,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902126221] [2022-11-18 20:32:19,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:19,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:19,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:19,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:19,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:19,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-18 20:32:19,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 283 transitions, 595 flow. Second operand has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:19,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:19,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-18 20:32:19,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:19,500 INFO L130 PetriNetUnfolder]: 236/1250 cut-off events. [2022-11-18 20:32:19,500 INFO L131 PetriNetUnfolder]: For 123/161 co-relation queries the response was YES. [2022-11-18 20:32:19,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1250 events. 236/1250 cut-off events. For 123/161 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 9176 event pairs, 6 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 1475. Up to 327 conditions per place. [2022-11-18 20:32:19,521 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 32 selfloop transitions, 5 changer transitions 0/289 dead transitions. [2022-11-18 20:32:19,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 289 transitions, 688 flow [2022-11-18 20:32:19,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:32:19,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:32:19,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1718 transitions. [2022-11-18 20:32:19,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8920041536863966 [2022-11-18 20:32:19,526 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1718 transitions. [2022-11-18 20:32:19,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1718 transitions. [2022-11-18 20:32:19,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:19,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1718 transitions. [2022-11-18 20:32:19,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.3333333333333) internal successors, (1718), 6 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:19,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:19,537 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:19,537 INFO L175 Difference]: Start difference. First operand has 275 places, 283 transitions, 595 flow. Second operand 6 states and 1718 transitions. [2022-11-18 20:32:19,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 289 transitions, 688 flow [2022-11-18 20:32:19,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 289 transitions, 688 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:32:19,543 INFO L231 Difference]: Finished difference. Result has 279 places, 282 transitions, 603 flow [2022-11-18 20:32:19,543 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=603, PETRI_PLACES=279, PETRI_TRANSITIONS=282} [2022-11-18 20:32:19,546 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 4 predicate places. [2022-11-18 20:32:19,546 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 282 transitions, 603 flow [2022-11-18 20:32:19,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.0) internal successors, (1692), 6 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:19,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:19,548 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] [2022-11-18 20:32:19,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:32:19,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:19,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1874299627, now seen corresponding path program 1 times [2022-11-18 20:32:19,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:19,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685638673] [2022-11-18 20:32:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:19,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:19,702 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 20:32:19,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:19,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685638673] [2022-11-18 20:32:19,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685638673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:19,703 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:19,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:19,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809396092] [2022-11-18 20:32:19,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:19,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:32:19,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:19,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:32:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:19,706 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 20:32:19,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 282 transitions, 603 flow. Second operand has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:19,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:19,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 20:32:19,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:20,091 INFO L130 PetriNetUnfolder]: 148/1049 cut-off events. [2022-11-18 20:32:20,091 INFO L131 PetriNetUnfolder]: For 104/398 co-relation queries the response was YES. [2022-11-18 20:32:20,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 1049 events. 148/1049 cut-off events. For 104/398 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7596 event pairs, 48 based on Foata normal form. 0/869 useless extension candidates. Maximal degree in co-relation 1152. Up to 126 conditions per place. [2022-11-18 20:32:20,123 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 36 selfloop transitions, 4 changer transitions 0/295 dead transitions. [2022-11-18 20:32:20,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 295 transitions, 716 flow [2022-11-18 20:32:20,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:32:20,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:32:20,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1174 transitions. [2022-11-18 20:32:20,127 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9143302180685359 [2022-11-18 20:32:20,127 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1174 transitions. [2022-11-18 20:32:20,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1174 transitions. [2022-11-18 20:32:20,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:20,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1174 transitions. [2022-11-18 20:32:20,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.5) internal successors, (1174), 4 states have internal predecessors, (1174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,141 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,141 INFO L175 Difference]: Start difference. First operand has 279 places, 282 transitions, 603 flow. Second operand 4 states and 1174 transitions. [2022-11-18 20:32:20,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 295 transitions, 716 flow [2022-11-18 20:32:20,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 295 transitions, 707 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:32:20,149 INFO L231 Difference]: Finished difference. Result has 280 places, 283 transitions, 618 flow [2022-11-18 20:32:20,150 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=592, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=618, PETRI_PLACES=280, PETRI_TRANSITIONS=283} [2022-11-18 20:32:20,156 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 5 predicate places. [2022-11-18 20:32:20,157 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 283 transitions, 618 flow [2022-11-18 20:32:20,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,159 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:20,159 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] [2022-11-18 20:32:20,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:32:20,159 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1453873425, now seen corresponding path program 1 times [2022-11-18 20:32:20,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:20,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697040228] [2022-11-18 20:32:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:20,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:20,251 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 20:32:20,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:20,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697040228] [2022-11-18 20:32:20,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697040228] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:20,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:20,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:20,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149319649] [2022-11-18 20:32:20,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:20,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:32:20,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:20,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:32:20,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:20,255 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 20:32:20,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 283 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:20,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 20:32:20,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:20,575 INFO L130 PetriNetUnfolder]: 95/1042 cut-off events. [2022-11-18 20:32:20,575 INFO L131 PetriNetUnfolder]: For 55/114 co-relation queries the response was YES. [2022-11-18 20:32:20,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 1042 events. 95/1042 cut-off events. For 55/114 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 7159 event pairs, 24 based on Foata normal form. 5/915 useless extension candidates. Maximal degree in co-relation 1174. Up to 72 conditions per place. [2022-11-18 20:32:20,598 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 37 selfloop transitions, 3 changer transitions 0/295 dead transitions. [2022-11-18 20:32:20,598 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 295 transitions, 726 flow [2022-11-18 20:32:20,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:32:20,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:32:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1173 transitions. [2022-11-18 20:32:20,601 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9135514018691588 [2022-11-18 20:32:20,601 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1173 transitions. [2022-11-18 20:32:20,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1173 transitions. [2022-11-18 20:32:20,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:20,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1173 transitions. [2022-11-18 20:32:20,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,608 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,608 INFO L175 Difference]: Start difference. First operand has 280 places, 283 transitions, 618 flow. Second operand 4 states and 1173 transitions. [2022-11-18 20:32:20,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 295 transitions, 726 flow [2022-11-18 20:32:20,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 295 transitions, 724 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:32:20,615 INFO L231 Difference]: Finished difference. Result has 282 places, 282 transitions, 616 flow [2022-11-18 20:32:20,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=616, PETRI_PLACES=282, PETRI_TRANSITIONS=282} [2022-11-18 20:32:20,618 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 7 predicate places. [2022-11-18 20:32:20,618 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 282 transitions, 616 flow [2022-11-18 20:32:20,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,619 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:20,619 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:32:20,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:32:20,620 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:20,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash 2120404044, now seen corresponding path program 1 times [2022-11-18 20:32:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:20,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424769046] [2022-11-18 20:32:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:20,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:20,755 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 20:32:20,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:20,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424769046] [2022-11-18 20:32:20,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424769046] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:20,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:20,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:20,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520648416] [2022-11-18 20:32:20,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:20,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:20,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:20,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:20,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:20,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-18 20:32:20,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 282 transitions, 616 flow. Second operand has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:20,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:20,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-18 20:32:20,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:21,064 INFO L130 PetriNetUnfolder]: 96/802 cut-off events. [2022-11-18 20:32:21,064 INFO L131 PetriNetUnfolder]: For 43/323 co-relation queries the response was YES. [2022-11-18 20:32:21,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 802 events. 96/802 cut-off events. For 43/323 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5032 event pairs, 4 based on Foata normal form. 4/723 useless extension candidates. Maximal degree in co-relation 1049. Up to 168 conditions per place. [2022-11-18 20:32:21,083 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 31 selfloop transitions, 5 changer transitions 0/289 dead transitions. [2022-11-18 20:32:21,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 289 transitions, 710 flow [2022-11-18 20:32:21,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:32:21,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:32:21,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1717 transitions. [2022-11-18 20:32:21,087 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891484942886812 [2022-11-18 20:32:21,087 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1717 transitions. [2022-11-18 20:32:21,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1717 transitions. [2022-11-18 20:32:21,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:21,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1717 transitions. [2022-11-18 20:32:21,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:21,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:21,096 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:21,097 INFO L175 Difference]: Start difference. First operand has 282 places, 282 transitions, 616 flow. Second operand 6 states and 1717 transitions. [2022-11-18 20:32:21,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 289 transitions, 710 flow [2022-11-18 20:32:21,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 289 transitions, 705 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:32:21,103 INFO L231 Difference]: Finished difference. Result has 284 places, 281 transitions, 619 flow [2022-11-18 20:32:21,103 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=619, PETRI_PLACES=284, PETRI_TRANSITIONS=281} [2022-11-18 20:32:21,104 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 9 predicate places. [2022-11-18 20:32:21,104 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 281 transitions, 619 flow [2022-11-18 20:32:21,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:21,105 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:21,105 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] [2022-11-18 20:32:21,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:32:21,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:21,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:21,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1525824497, now seen corresponding path program 1 times [2022-11-18 20:32:21,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:21,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135912087] [2022-11-18 20:32:21,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:21,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:21,185 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 20:32:21,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:21,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135912087] [2022-11-18 20:32:21,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135912087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:21,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:21,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:21,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855687179] [2022-11-18 20:32:21,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:21,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:32:21,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:21,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:32:21,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:21,189 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 20:32:21,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 281 transitions, 619 flow. Second operand has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:21,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:21,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 20:32:21,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:21,524 INFO L130 PetriNetUnfolder]: 108/1148 cut-off events. [2022-11-18 20:32:21,525 INFO L131 PetriNetUnfolder]: For 33/109 co-relation queries the response was YES. [2022-11-18 20:32:21,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1537 conditions, 1148 events. 108/1148 cut-off events. For 33/109 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8393 event pairs, 36 based on Foata normal form. 5/1014 useless extension candidates. Maximal degree in co-relation 1345. Up to 106 conditions per place. [2022-11-18 20:32:21,548 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 34 selfloop transitions, 3 changer transitions 0/293 dead transitions. [2022-11-18 20:32:21,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 293 transitions, 723 flow [2022-11-18 20:32:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:32:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:32:21,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1170 transitions. [2022-11-18 20:32:21,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9112149532710281 [2022-11-18 20:32:21,552 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1170 transitions. [2022-11-18 20:32:21,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1170 transitions. [2022-11-18 20:32:21,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:21,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1170 transitions. [2022-11-18 20:32:21,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.5) internal successors, (1170), 4 states have internal predecessors, (1170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:21,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:21,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:21,559 INFO L175 Difference]: Start difference. First operand has 284 places, 281 transitions, 619 flow. Second operand 4 states and 1170 transitions. [2022-11-18 20:32:21,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 293 transitions, 723 flow [2022-11-18 20:32:21,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 293 transitions, 712 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:32:21,566 INFO L231 Difference]: Finished difference. Result has 282 places, 281 transitions, 617 flow [2022-11-18 20:32:21,566 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=617, PETRI_PLACES=282, PETRI_TRANSITIONS=281} [2022-11-18 20:32:21,567 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 7 predicate places. [2022-11-18 20:32:21,567 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 281 transitions, 617 flow [2022-11-18 20:32:21,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:21,568 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:21,568 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] [2022-11-18 20:32:21,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:32:21,569 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:21,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash 359271466, now seen corresponding path program 1 times [2022-11-18 20:32:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:21,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694756295] [2022-11-18 20:32:21,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:21,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:21,660 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 20:32:21,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:21,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694756295] [2022-11-18 20:32:21,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694756295] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:21,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:21,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:21,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827489763] [2022-11-18 20:32:21,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:21,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:21,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:21,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:21,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:21,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-18 20:32:21,666 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 281 transitions, 617 flow. Second operand has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:21,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:21,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-18 20:32:21,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:22,249 INFO L130 PetriNetUnfolder]: 488/2104 cut-off events. [2022-11-18 20:32:22,249 INFO L131 PetriNetUnfolder]: For 365/522 co-relation queries the response was YES. [2022-11-18 20:32:22,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 2104 events. 488/2104 cut-off events. For 365/522 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 19277 event pairs, 5 based on Foata normal form. 0/1694 useless extension candidates. Maximal degree in co-relation 2512. Up to 749 conditions per place. [2022-11-18 20:32:22,275 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 31 selfloop transitions, 5 changer transitions 0/286 dead transitions. [2022-11-18 20:32:22,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 286 transitions, 703 flow [2022-11-18 20:32:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:32:22,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:32:22,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1717 transitions. [2022-11-18 20:32:22,279 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891484942886812 [2022-11-18 20:32:22,279 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1717 transitions. [2022-11-18 20:32:22,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1717 transitions. [2022-11-18 20:32:22,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:22,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1717 transitions. [2022-11-18 20:32:22,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.1666666666667) internal successors, (1717), 6 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:22,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:22,289 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:22,289 INFO L175 Difference]: Start difference. First operand has 282 places, 281 transitions, 617 flow. Second operand 6 states and 1717 transitions. [2022-11-18 20:32:22,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 286 transitions, 703 flow [2022-11-18 20:32:22,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 286 transitions, 701 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:32:22,295 INFO L231 Difference]: Finished difference. Result has 285 places, 280 transitions, 623 flow [2022-11-18 20:32:22,296 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=623, PETRI_PLACES=285, PETRI_TRANSITIONS=280} [2022-11-18 20:32:22,296 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 10 predicate places. [2022-11-18 20:32:22,296 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 280 transitions, 623 flow [2022-11-18 20:32:22,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.1666666666667) internal successors, (1693), 6 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:22,298 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:22,298 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] [2022-11-18 20:32:22,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:32:22,299 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:22,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:22,299 INFO L85 PathProgramCache]: Analyzing trace with hash -1747485486, now seen corresponding path program 1 times [2022-11-18 20:32:22,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:22,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578829761] [2022-11-18 20:32:22,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:22,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:22,368 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 20:32:22,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:22,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578829761] [2022-11-18 20:32:22,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578829761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:22,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:22,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:22,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446273008] [2022-11-18 20:32:22,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:22,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:32:22,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:22,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:32:22,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:22,372 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 20:32:22,373 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 280 transitions, 623 flow. Second operand has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:22,374 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:22,374 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 20:32:22,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:23,043 INFO L130 PetriNetUnfolder]: 493/2445 cut-off events. [2022-11-18 20:32:23,044 INFO L131 PetriNetUnfolder]: For 484/750 co-relation queries the response was YES. [2022-11-18 20:32:23,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 2445 events. 493/2445 cut-off events. For 484/750 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 24391 event pairs, 192 based on Foata normal form. 0/1885 useless extension candidates. Maximal degree in co-relation 3403. Up to 446 conditions per place. [2022-11-18 20:32:23,078 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 35 selfloop transitions, 4 changer transitions 0/292 dead transitions. [2022-11-18 20:32:23,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 292 transitions, 729 flow [2022-11-18 20:32:23,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:32:23,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:32:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1173 transitions. [2022-11-18 20:32:23,082 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9135514018691588 [2022-11-18 20:32:23,082 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1173 transitions. [2022-11-18 20:32:23,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1173 transitions. [2022-11-18 20:32:23,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:23,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1173 transitions. [2022-11-18 20:32:23,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.25) internal successors, (1173), 4 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,091 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,091 INFO L175 Difference]: Start difference. First operand has 285 places, 280 transitions, 623 flow. Second operand 4 states and 1173 transitions. [2022-11-18 20:32:23,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 292 transitions, 729 flow [2022-11-18 20:32:23,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 292 transitions, 720 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:32:23,097 INFO L231 Difference]: Finished difference. Result has 286 places, 281 transitions, 638 flow [2022-11-18 20:32:23,098 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=638, PETRI_PLACES=286, PETRI_TRANSITIONS=281} [2022-11-18 20:32:23,098 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 11 predicate places. [2022-11-18 20:32:23,099 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 281 transitions, 638 flow [2022-11-18 20:32:23,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.25) internal successors, (1141), 4 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,099 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:23,100 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] [2022-11-18 20:32:23,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:32:23,100 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:23,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:23,101 INFO L85 PathProgramCache]: Analyzing trace with hash 427465596, now seen corresponding path program 1 times [2022-11-18 20:32:23,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:23,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62956411] [2022-11-18 20:32:23,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:23,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:23,170 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 20:32:23,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:23,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62956411] [2022-11-18 20:32:23,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62956411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:23,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:23,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:23,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303239993] [2022-11-18 20:32:23,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:23,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:32:23,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:23,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:32:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:23,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 20:32:23,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 281 transitions, 638 flow. Second operand has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:23,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 20:32:23,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:23,650 INFO L130 PetriNetUnfolder]: 167/1351 cut-off events. [2022-11-18 20:32:23,651 INFO L131 PetriNetUnfolder]: For 207/649 co-relation queries the response was YES. [2022-11-18 20:32:23,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1869 conditions, 1351 events. 167/1351 cut-off events. For 207/649 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 10727 event pairs, 60 based on Foata normal form. 6/1147 useless extension candidates. Maximal degree in co-relation 1690. Up to 148 conditions per place. [2022-11-18 20:32:23,737 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 36 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2022-11-18 20:32:23,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 292 transitions, 741 flow [2022-11-18 20:32:23,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:32:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:32:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1172 transitions. [2022-11-18 20:32:23,740 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9127725856697819 [2022-11-18 20:32:23,741 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1172 transitions. [2022-11-18 20:32:23,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1172 transitions. [2022-11-18 20:32:23,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:23,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1172 transitions. [2022-11-18 20:32:23,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,747 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,747 INFO L175 Difference]: Start difference. First operand has 286 places, 281 transitions, 638 flow. Second operand 4 states and 1172 transitions. [2022-11-18 20:32:23,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 292 transitions, 741 flow [2022-11-18 20:32:23,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 292 transitions, 739 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:32:23,753 INFO L231 Difference]: Finished difference. Result has 288 places, 280 transitions, 636 flow [2022-11-18 20:32:23,754 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=636, PETRI_PLACES=288, PETRI_TRANSITIONS=280} [2022-11-18 20:32:23,755 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 13 predicate places. [2022-11-18 20:32:23,755 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 280 transitions, 636 flow [2022-11-18 20:32:23,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.5) internal successors, (1142), 4 states have internal predecessors, (1142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,755 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:23,756 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] [2022-11-18 20:32:23,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:32:23,756 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:23,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:23,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1035295951, now seen corresponding path program 1 times [2022-11-18 20:32:23,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:23,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883762999] [2022-11-18 20:32:23,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:23,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:23,886 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 20:32:23,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:23,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883762999] [2022-11-18 20:32:23,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883762999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:23,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:23,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:32:23,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224641973] [2022-11-18 20:32:23,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:23,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:32:23,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:23,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:32:23,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:32:23,890 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 20:32:23,892 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 280 transitions, 636 flow. Second operand has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:23,893 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:23,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 20:32:23,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:24,369 INFO L130 PetriNetUnfolder]: 202/1286 cut-off events. [2022-11-18 20:32:24,370 INFO L131 PetriNetUnfolder]: For 53/201 co-relation queries the response was YES. [2022-11-18 20:32:24,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2004 conditions, 1286 events. 202/1286 cut-off events. For 53/201 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 9670 event pairs, 2 based on Foata normal form. 8/1197 useless extension candidates. Maximal degree in co-relation 1923. Up to 198 conditions per place. [2022-11-18 20:32:24,393 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 40 selfloop transitions, 9 changer transitions 0/296 dead transitions. [2022-11-18 20:32:24,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 296 transitions, 780 flow [2022-11-18 20:32:24,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:32:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:32:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2250 transitions. [2022-11-18 20:32:24,399 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761682242990654 [2022-11-18 20:32:24,399 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2250 transitions. [2022-11-18 20:32:24,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2250 transitions. [2022-11-18 20:32:24,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:24,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2250 transitions. [2022-11-18 20:32:24,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.25) internal successors, (2250), 8 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:24,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:24,410 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:24,410 INFO L175 Difference]: Start difference. First operand has 288 places, 280 transitions, 636 flow. Second operand 8 states and 2250 transitions. [2022-11-18 20:32:24,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 296 transitions, 780 flow [2022-11-18 20:32:24,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 296 transitions, 775 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:32:24,416 INFO L231 Difference]: Finished difference. Result has 295 places, 281 transitions, 661 flow [2022-11-18 20:32:24,416 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=661, PETRI_PLACES=295, PETRI_TRANSITIONS=281} [2022-11-18 20:32:24,417 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 20 predicate places. [2022-11-18 20:32:24,417 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 281 transitions, 661 flow [2022-11-18 20:32:24,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.0) internal successors, (2216), 8 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:24,418 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:24,418 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] [2022-11-18 20:32:24,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:32:24,419 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:24,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:24,419 INFO L85 PathProgramCache]: Analyzing trace with hash 366532489, now seen corresponding path program 1 times [2022-11-18 20:32:24,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:24,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663678308] [2022-11-18 20:32:24,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:24,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:24,505 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 20:32:24,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:24,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663678308] [2022-11-18 20:32:24,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663678308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:24,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:24,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:24,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257664709] [2022-11-18 20:32:24,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:24,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:24,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:24,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:24,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:24,509 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-18 20:32:24,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 281 transitions, 661 flow. Second operand has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:24,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:24,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-18 20:32:24,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:25,262 INFO L130 PetriNetUnfolder]: 358/2347 cut-off events. [2022-11-18 20:32:25,262 INFO L131 PetriNetUnfolder]: For 268/340 co-relation queries the response was YES. [2022-11-18 20:32:25,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3255 conditions, 2347 events. 358/2347 cut-off events. For 268/340 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 21325 event pairs, 8 based on Foata normal form. 0/2011 useless extension candidates. Maximal degree in co-relation 2949. Up to 535 conditions per place. [2022-11-18 20:32:25,313 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 30 selfloop transitions, 5 changer transitions 0/287 dead transitions. [2022-11-18 20:32:25,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 287 transitions, 750 flow [2022-11-18 20:32:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:32:25,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:32:25,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1716 transitions. [2022-11-18 20:32:25,318 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8909657320872274 [2022-11-18 20:32:25,319 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1716 transitions. [2022-11-18 20:32:25,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1716 transitions. [2022-11-18 20:32:25,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:25,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1716 transitions. [2022-11-18 20:32:25,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:25,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:25,329 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:25,330 INFO L175 Difference]: Start difference. First operand has 295 places, 281 transitions, 661 flow. Second operand 6 states and 1716 transitions. [2022-11-18 20:32:25,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 287 transitions, 750 flow [2022-11-18 20:32:25,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 287 transitions, 741 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:32:25,338 INFO L231 Difference]: Finished difference. Result has 295 places, 280 transitions, 660 flow [2022-11-18 20:32:25,339 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=660, PETRI_PLACES=295, PETRI_TRANSITIONS=280} [2022-11-18 20:32:25,342 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 20 predicate places. [2022-11-18 20:32:25,342 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 280 transitions, 660 flow [2022-11-18 20:32:25,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.3333333333333) internal successors, (1694), 6 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:25,343 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:25,343 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] [2022-11-18 20:32:25,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:32:25,343 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:25,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:25,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2029402568, now seen corresponding path program 1 times [2022-11-18 20:32:25,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:25,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289638661] [2022-11-18 20:32:25,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:25,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:25,514 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 20:32:25,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:25,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289638661] [2022-11-18 20:32:25,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289638661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:25,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:25,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:32:25,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094642521] [2022-11-18 20:32:25,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:25,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:32:25,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:25,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:32:25,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:32:25,524 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 20:32:25,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 280 transitions, 660 flow. Second operand has 8 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:25,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:25,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 20:32:25,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:25,999 INFO L130 PetriNetUnfolder]: 172/1245 cut-off events. [2022-11-18 20:32:25,999 INFO L131 PetriNetUnfolder]: For 153/277 co-relation queries the response was YES. [2022-11-18 20:32:26,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2008 conditions, 1245 events. 172/1245 cut-off events. For 153/277 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9307 event pairs, 2 based on Foata normal form. 8/1172 useless extension candidates. Maximal degree in co-relation 1927. Up to 178 conditions per place. [2022-11-18 20:32:26,023 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 43 selfloop transitions, 9 changer transitions 0/298 dead transitions. [2022-11-18 20:32:26,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 298 transitions, 829 flow [2022-11-18 20:32:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:32:26,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:32:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2252 transitions. [2022-11-18 20:32:26,029 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8769470404984424 [2022-11-18 20:32:26,029 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2252 transitions. [2022-11-18 20:32:26,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2252 transitions. [2022-11-18 20:32:26,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:26,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2252 transitions. [2022-11-18 20:32:26,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.5) internal successors, (2252), 8 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,040 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,040 INFO L175 Difference]: Start difference. First operand has 295 places, 280 transitions, 660 flow. Second operand 8 states and 2252 transitions. [2022-11-18 20:32:26,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 298 transitions, 829 flow [2022-11-18 20:32:26,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 298 transitions, 812 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:32:26,047 INFO L231 Difference]: Finished difference. Result has 300 places, 281 transitions, 681 flow [2022-11-18 20:32:26,047 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=651, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=681, PETRI_PLACES=300, PETRI_TRANSITIONS=281} [2022-11-18 20:32:26,048 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 25 predicate places. [2022-11-18 20:32:26,048 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 281 transitions, 681 flow [2022-11-18 20:32:26,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,049 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:26,049 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 20:32:26,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:32:26,049 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:26,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:26,050 INFO L85 PathProgramCache]: Analyzing trace with hash 925760780, now seen corresponding path program 1 times [2022-11-18 20:32:26,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:26,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766537903] [2022-11-18 20:32:26,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:26,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:26,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:26,132 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 20:32:26,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:26,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766537903] [2022-11-18 20:32:26,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766537903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:26,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:26,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273251561] [2022-11-18 20:32:26,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:26,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:32:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:26,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:32:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:26,136 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 20:32:26,137 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 281 transitions, 681 flow. Second operand has 4 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:26,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 20:32:26,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:26,703 INFO L130 PetriNetUnfolder]: 201/1555 cut-off events. [2022-11-18 20:32:26,703 INFO L131 PetriNetUnfolder]: For 197/757 co-relation queries the response was YES. [2022-11-18 20:32:26,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2206 conditions, 1555 events. 201/1555 cut-off events. For 197/757 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 13096 event pairs, 90 based on Foata normal form. 6/1321 useless extension candidates. Maximal degree in co-relation 2023. Up to 218 conditions per place. [2022-11-18 20:32:26,813 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 33 selfloop transitions, 3 changer transitions 0/292 dead transitions. [2022-11-18 20:32:26,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 292 transitions, 780 flow [2022-11-18 20:32:26,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:32:26,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:32:26,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1169 transitions. [2022-11-18 20:32:26,818 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.910436137071651 [2022-11-18 20:32:26,818 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1169 transitions. [2022-11-18 20:32:26,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1169 transitions. [2022-11-18 20:32:26,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:26,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1169 transitions. [2022-11-18 20:32:26,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.25) internal successors, (1169), 4 states have internal predecessors, (1169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,824 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,824 INFO L175 Difference]: Start difference. First operand has 300 places, 281 transitions, 681 flow. Second operand 4 states and 1169 transitions. [2022-11-18 20:32:26,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 292 transitions, 780 flow [2022-11-18 20:32:26,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 292 transitions, 769 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:32:26,831 INFO L231 Difference]: Finished difference. Result has 298 places, 281 transitions, 679 flow [2022-11-18 20:32:26,832 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=679, PETRI_PLACES=298, PETRI_TRANSITIONS=281} [2022-11-18 20:32:26,832 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 23 predicate places. [2022-11-18 20:32:26,832 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 281 transitions, 679 flow [2022-11-18 20:32:26,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,833 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:26,833 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] [2022-11-18 20:32:26,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:32:26,834 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:26,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:26,834 INFO L85 PathProgramCache]: Analyzing trace with hash -567741092, now seen corresponding path program 1 times [2022-11-18 20:32:26,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:26,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417219531] [2022-11-18 20:32:26,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:26,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:26,986 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 20:32:26,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:26,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417219531] [2022-11-18 20:32:26,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417219531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:26,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:26,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:26,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162183005] [2022-11-18 20:32:26,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:26,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:26,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:26,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:26,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:26,990 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-18 20:32:26,991 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 281 transitions, 679 flow. Second operand has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:26,992 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:26,992 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-18 20:32:26,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:27,424 INFO L130 PetriNetUnfolder]: 127/1134 cut-off events. [2022-11-18 20:32:27,424 INFO L131 PetriNetUnfolder]: For 94/100 co-relation queries the response was YES. [2022-11-18 20:32:27,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1793 conditions, 1134 events. 127/1134 cut-off events. For 94/100 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 8301 event pairs, 58 based on Foata normal form. 3/1045 useless extension candidates. Maximal degree in co-relation 1665. Up to 154 conditions per place. [2022-11-18 20:32:27,454 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 46 selfloop transitions, 7 changer transitions 0/297 dead transitions. [2022-11-18 20:32:27,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 297 transitions, 832 flow [2022-11-18 20:32:27,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:32:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:32:27,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-11-18 20:32:27,459 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8740542946150422 [2022-11-18 20:32:27,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-11-18 20:32:27,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-11-18 20:32:27,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:27,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-11-18 20:32:27,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:27,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:27,468 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:27,469 INFO L175 Difference]: Start difference. First operand has 298 places, 281 transitions, 679 flow. Second operand 7 states and 1964 transitions. [2022-11-18 20:32:27,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 297 transitions, 832 flow [2022-11-18 20:32:27,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 297 transitions, 828 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:32:27,475 INFO L231 Difference]: Finished difference. Result has 305 places, 284 transitions, 711 flow [2022-11-18 20:32:27,476 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=671, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=711, PETRI_PLACES=305, PETRI_TRANSITIONS=284} [2022-11-18 20:32:27,477 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 30 predicate places. [2022-11-18 20:32:27,477 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 284 transitions, 711 flow [2022-11-18 20:32:27,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.3333333333333) internal successors, (1658), 6 states have internal predecessors, (1658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:27,478 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:27,478 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] [2022-11-18 20:32:27,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:32:27,479 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:27,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:27,479 INFO L85 PathProgramCache]: Analyzing trace with hash 306926390, now seen corresponding path program 1 times [2022-11-18 20:32:27,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:27,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966067270] [2022-11-18 20:32:27,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:27,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:27,627 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 20:32:27,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:27,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966067270] [2022-11-18 20:32:27,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966067270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:27,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:27,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:27,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899925107] [2022-11-18 20:32:27,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:27,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:27,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:27,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:27,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:27,633 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-18 20:32:27,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 284 transitions, 711 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:27,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:27,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-18 20:32:27,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:28,062 INFO L130 PetriNetUnfolder]: 119/1123 cut-off events. [2022-11-18 20:32:28,063 INFO L131 PetriNetUnfolder]: For 120/126 co-relation queries the response was YES. [2022-11-18 20:32:28,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 1123 events. 119/1123 cut-off events. For 120/126 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8161 event pairs, 48 based on Foata normal form. 3/1048 useless extension candidates. Maximal degree in co-relation 1702. Up to 129 conditions per place. [2022-11-18 20:32:28,091 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 55 selfloop transitions, 8 changer transitions 0/307 dead transitions. [2022-11-18 20:32:28,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 307 transitions, 920 flow [2022-11-18 20:32:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:32:28,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:32:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1970 transitions. [2022-11-18 20:32:28,096 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8767245215843347 [2022-11-18 20:32:28,096 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1970 transitions. [2022-11-18 20:32:28,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1970 transitions. [2022-11-18 20:32:28,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:28,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1970 transitions. [2022-11-18 20:32:28,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.42857142857144) internal successors, (1970), 7 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:28,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:28,107 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:28,107 INFO L175 Difference]: Start difference. First operand has 305 places, 284 transitions, 711 flow. Second operand 7 states and 1970 transitions. [2022-11-18 20:32:28,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 307 transitions, 920 flow [2022-11-18 20:32:28,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 307 transitions, 918 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:32:28,115 INFO L231 Difference]: Finished difference. Result has 313 places, 288 transitions, 758 flow [2022-11-18 20:32:28,115 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=758, PETRI_PLACES=313, PETRI_TRANSITIONS=288} [2022-11-18 20:32:28,116 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 38 predicate places. [2022-11-18 20:32:28,116 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 288 transitions, 758 flow [2022-11-18 20:32:28,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:28,117 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:28,117 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] [2022-11-18 20:32:28,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:32:28,117 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:28,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:28,118 INFO L85 PathProgramCache]: Analyzing trace with hash 245578297, now seen corresponding path program 1 times [2022-11-18 20:32:28,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:28,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942947068] [2022-11-18 20:32:28,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:28,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:28,182 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 20:32:28,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:28,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942947068] [2022-11-18 20:32:28,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942947068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:28,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:28,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:28,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990017934] [2022-11-18 20:32:28,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:28,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:32:28,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:28,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:32:28,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:28,186 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 20:32:28,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 288 transitions, 758 flow. Second operand has 4 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:28,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:28,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 20:32:28,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:29,064 INFO L130 PetriNetUnfolder]: 590/2942 cut-off events. [2022-11-18 20:32:29,064 INFO L131 PetriNetUnfolder]: For 828/1226 co-relation queries the response was YES. [2022-11-18 20:32:29,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4478 conditions, 2942 events. 590/2942 cut-off events. For 828/1226 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 32213 event pairs, 240 based on Foata normal form. 21/2291 useless extension candidates. Maximal degree in co-relation 4386. Up to 516 conditions per place. [2022-11-18 20:32:29,096 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 35 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-18 20:32:29,097 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 298 transitions, 854 flow [2022-11-18 20:32:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:32:29,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:32:29,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1171 transitions. [2022-11-18 20:32:29,101 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.911993769470405 [2022-11-18 20:32:29,101 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1171 transitions. [2022-11-18 20:32:29,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1171 transitions. [2022-11-18 20:32:29,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:29,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1171 transitions. [2022-11-18 20:32:29,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.75) internal successors, (1171), 4 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:29,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:29,108 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:29,109 INFO L175 Difference]: Start difference. First operand has 313 places, 288 transitions, 758 flow. Second operand 4 states and 1171 transitions. [2022-11-18 20:32:29,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 298 transitions, 854 flow [2022-11-18 20:32:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 298 transitions, 852 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:32:29,118 INFO L231 Difference]: Finished difference. Result has 315 places, 287 transitions, 756 flow [2022-11-18 20:32:29,119 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=756, PETRI_PLACES=315, PETRI_TRANSITIONS=287} [2022-11-18 20:32:29,119 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 40 predicate places. [2022-11-18 20:32:29,119 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 287 transitions, 756 flow [2022-11-18 20:32:29,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 285.75) internal successors, (1143), 4 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:29,120 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:29,120 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] [2022-11-18 20:32:29,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:32:29,121 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:29,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1738401710, now seen corresponding path program 1 times [2022-11-18 20:32:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:29,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091749478] [2022-11-18 20:32:29,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:29,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:29,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:29,299 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 20:32:29,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:29,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091749478] [2022-11-18 20:32:29,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091749478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:29,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:29,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:32:29,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651554799] [2022-11-18 20:32:29,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:29,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:32:29,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:29,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:32:29,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:32:29,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 20:32:29,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 287 transitions, 756 flow. Second operand has 8 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:29,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:29,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 20:32:29,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:30,093 INFO L130 PetriNetUnfolder]: 307/1793 cut-off events. [2022-11-18 20:32:30,094 INFO L131 PetriNetUnfolder]: For 236/350 co-relation queries the response was YES. [2022-11-18 20:32:30,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2833 conditions, 1793 events. 307/1793 cut-off events. For 236/350 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 15488 event pairs, 2 based on Foata normal form. 0/1598 useless extension candidates. Maximal degree in co-relation 2704. Up to 300 conditions per place. [2022-11-18 20:32:30,134 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 39 selfloop transitions, 9 changer transitions 0/302 dead transitions. [2022-11-18 20:32:30,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 302 transitions, 895 flow [2022-11-18 20:32:30,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:32:30,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:32:30,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2249 transitions. [2022-11-18 20:32:30,140 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8757788161993769 [2022-11-18 20:32:30,140 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2249 transitions. [2022-11-18 20:32:30,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2249 transitions. [2022-11-18 20:32:30,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:30,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2249 transitions. [2022-11-18 20:32:30,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.125) internal successors, (2249), 8 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:30,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:30,152 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:30,152 INFO L175 Difference]: Start difference. First operand has 315 places, 287 transitions, 756 flow. Second operand 8 states and 2249 transitions. [2022-11-18 20:32:30,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 302 transitions, 895 flow [2022-11-18 20:32:30,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 302 transitions, 890 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:32:30,160 INFO L231 Difference]: Finished difference. Result has 322 places, 288 transitions, 781 flow [2022-11-18 20:32:30,161 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=781, PETRI_PLACES=322, PETRI_TRANSITIONS=288} [2022-11-18 20:32:30,161 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 47 predicate places. [2022-11-18 20:32:30,161 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 288 transitions, 781 flow [2022-11-18 20:32:30,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.125) internal successors, (2217), 8 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:30,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:30,163 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] [2022-11-18 20:32:30,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:32:30,163 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:30,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:30,164 INFO L85 PathProgramCache]: Analyzing trace with hash -977006412, now seen corresponding path program 1 times [2022-11-18 20:32:30,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:30,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62809998] [2022-11-18 20:32:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:30,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:30,264 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 20:32:30,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:30,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62809998] [2022-11-18 20:32:30,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62809998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:30,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:30,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:30,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275053409] [2022-11-18 20:32:30,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:30,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:30,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:30,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:30,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:30,268 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 321 [2022-11-18 20:32:30,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 288 transitions, 781 flow. Second operand has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:30,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:30,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 321 [2022-11-18 20:32:30,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:31,021 INFO L130 PetriNetUnfolder]: 681/3532 cut-off events. [2022-11-18 20:32:31,021 INFO L131 PetriNetUnfolder]: For 780/985 co-relation queries the response was YES. [2022-11-18 20:32:31,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5337 conditions, 3532 events. 681/3532 cut-off events. For 780/985 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 36385 event pairs, 5 based on Foata normal form. 0/2935 useless extension candidates. Maximal degree in co-relation 4106. Up to 1126 conditions per place. [2022-11-18 20:32:31,058 INFO L137 encePairwiseOnDemand]: 315/321 looper letters, 29 selfloop transitions, 5 changer transitions 0/293 dead transitions. [2022-11-18 20:32:31,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 293 transitions, 867 flow [2022-11-18 20:32:31,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:32:31,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-18 20:32:31,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1715 transitions. [2022-11-18 20:32:31,062 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8904465212876428 [2022-11-18 20:32:31,063 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1715 transitions. [2022-11-18 20:32:31,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1715 transitions. [2022-11-18 20:32:31,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:31,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1715 transitions. [2022-11-18 20:32:31,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 285.8333333333333) internal successors, (1715), 6 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:31,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:31,071 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 321.0) internal successors, (2247), 7 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:31,071 INFO L175 Difference]: Start difference. First operand has 322 places, 288 transitions, 781 flow. Second operand 6 states and 1715 transitions. [2022-11-18 20:32:31,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 293 transitions, 867 flow [2022-11-18 20:32:31,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 293 transitions, 854 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:32:31,080 INFO L231 Difference]: Finished difference. Result has 322 places, 287 transitions, 780 flow [2022-11-18 20:32:31,080 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=322, PETRI_TRANSITIONS=287} [2022-11-18 20:32:31,081 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 47 predicate places. [2022-11-18 20:32:31,081 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 287 transitions, 780 flow [2022-11-18 20:32:31,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:31,082 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:31,082 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] [2022-11-18 20:32:31,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:32:31,083 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:31,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1944120925, now seen corresponding path program 1 times [2022-11-18 20:32:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:31,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740985598] [2022-11-18 20:32:31,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:31,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:31,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:31,224 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 20:32:31,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:31,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740985598] [2022-11-18 20:32:31,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740985598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:31,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:31,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:32:31,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477393471] [2022-11-18 20:32:31,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:31,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:32:31,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:31,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:32:31,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:32:31,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 20:32:31,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 287 transitions, 780 flow. Second operand has 8 states, 8 states have (on average 277.25) internal successors, (2218), 8 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:31,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:31,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 20:32:31,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:31,941 INFO L130 PetriNetUnfolder]: 259/1727 cut-off events. [2022-11-18 20:32:31,941 INFO L131 PetriNetUnfolder]: For 266/362 co-relation queries the response was YES. [2022-11-18 20:32:31,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 1727 events. 259/1727 cut-off events. For 266/362 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 14506 event pairs, 2 based on Foata normal form. 0/1572 useless extension candidates. Maximal degree in co-relation 2629. Up to 268 conditions per place. [2022-11-18 20:32:31,987 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 42 selfloop transitions, 9 changer transitions 0/304 dead transitions. [2022-11-18 20:32:31,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 304 transitions, 936 flow [2022-11-18 20:32:31,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:32:31,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:32:31,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2251 transitions. [2022-11-18 20:32:31,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8765576323987538 [2022-11-18 20:32:31,991 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2251 transitions. [2022-11-18 20:32:31,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2251 transitions. [2022-11-18 20:32:31,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:31,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2251 transitions. [2022-11-18 20:32:31,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.375) internal successors, (2251), 8 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:32,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:32,001 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:32,001 INFO L175 Difference]: Start difference. First operand has 322 places, 287 transitions, 780 flow. Second operand 8 states and 2251 transitions. [2022-11-18 20:32:32,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 304 transitions, 936 flow [2022-11-18 20:32:32,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 304 transitions, 927 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:32:32,009 INFO L231 Difference]: Finished difference. Result has 327 places, 288 transitions, 801 flow [2022-11-18 20:32:32,009 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=801, PETRI_PLACES=327, PETRI_TRANSITIONS=288} [2022-11-18 20:32:32,010 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 52 predicate places. [2022-11-18 20:32:32,010 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 288 transitions, 801 flow [2022-11-18 20:32:32,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.25) internal successors, (2218), 8 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:32,011 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:32,011 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] [2022-11-18 20:32:32,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:32:32,012 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:32,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:32,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1724931977, now seen corresponding path program 1 times [2022-11-18 20:32:32,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:32,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93330957] [2022-11-18 20:32:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:32,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:32,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:32,088 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 20:32:32,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:32,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93330957] [2022-11-18 20:32:32,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93330957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:32,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:32,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:32:32,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543997673] [2022-11-18 20:32:32,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:32,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:32:32,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:32,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:32:32,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:32:32,092 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 283 out of 321 [2022-11-18 20:32:32,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 288 transitions, 801 flow. Second operand has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:32,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:32,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 283 of 321 [2022-11-18 20:32:32,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:33,127 INFO L130 PetriNetUnfolder]: 729/3644 cut-off events. [2022-11-18 20:32:33,127 INFO L131 PetriNetUnfolder]: For 807/1281 co-relation queries the response was YES. [2022-11-18 20:32:33,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5518 conditions, 3644 events. 729/3644 cut-off events. For 807/1281 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 41644 event pairs, 360 based on Foata normal form. 21/2837 useless extension candidates. Maximal degree in co-relation 5419. Up to 762 conditions per place. [2022-11-18 20:32:33,169 INFO L137 encePairwiseOnDemand]: 317/321 looper letters, 32 selfloop transitions, 3 changer transitions 0/298 dead transitions. [2022-11-18 20:32:33,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 298 transitions, 893 flow [2022-11-18 20:32:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:32:33,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:32:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1168 transitions. [2022-11-18 20:32:33,172 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9096573208722741 [2022-11-18 20:32:33,172 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1168 transitions. [2022-11-18 20:32:33,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1168 transitions. [2022-11-18 20:32:33,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:33,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1168 transitions. [2022-11-18 20:32:33,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:33,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:33,183 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 321.0) internal successors, (1605), 5 states have internal predecessors, (1605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:33,183 INFO L175 Difference]: Start difference. First operand has 327 places, 288 transitions, 801 flow. Second operand 4 states and 1168 transitions. [2022-11-18 20:32:33,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 298 transitions, 893 flow [2022-11-18 20:32:33,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 298 transitions, 882 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:32:33,191 INFO L231 Difference]: Finished difference. Result has 325 places, 288 transitions, 799 flow [2022-11-18 20:32:33,192 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=799, PETRI_PLACES=325, PETRI_TRANSITIONS=288} [2022-11-18 20:32:33,192 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 50 predicate places. [2022-11-18 20:32:33,192 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 288 transitions, 799 flow [2022-11-18 20:32:33,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:33,193 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:33,193 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] [2022-11-18 20:32:33,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:32:33,194 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:33,194 INFO L85 PathProgramCache]: Analyzing trace with hash -216458489, now seen corresponding path program 1 times [2022-11-18 20:32:33,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:33,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407190286] [2022-11-18 20:32:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:33,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:33,319 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 20:32:33,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:33,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407190286] [2022-11-18 20:32:33,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407190286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:33,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:33,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:33,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728173294] [2022-11-18 20:32:33,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:33,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:33,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:33,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:33,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:33,323 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-18 20:32:33,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 288 transitions, 799 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:33,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:33,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-18 20:32:33,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:34,013 INFO L130 PetriNetUnfolder]: 282/1538 cut-off events. [2022-11-18 20:32:34,014 INFO L131 PetriNetUnfolder]: For 398/897 co-relation queries the response was YES. [2022-11-18 20:32:34,058 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2664 conditions, 1538 events. 282/1538 cut-off events. For 398/897 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 13762 event pairs, 145 based on Foata normal form. 6/1326 useless extension candidates. Maximal degree in co-relation 2470. Up to 331 conditions per place. [2022-11-18 20:32:34,076 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 45 selfloop transitions, 7 changer transitions 0/303 dead transitions. [2022-11-18 20:32:34,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 303 transitions, 947 flow [2022-11-18 20:32:34,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:32:34,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:32:34,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1963 transitions. [2022-11-18 20:32:34,079 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8736092567868269 [2022-11-18 20:32:34,080 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1963 transitions. [2022-11-18 20:32:34,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1963 transitions. [2022-11-18 20:32:34,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:34,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1963 transitions. [2022-11-18 20:32:34,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.42857142857144) internal successors, (1963), 7 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:34,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:34,089 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:34,089 INFO L175 Difference]: Start difference. First operand has 325 places, 288 transitions, 799 flow. Second operand 7 states and 1963 transitions. [2022-11-18 20:32:34,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 303 transitions, 947 flow [2022-11-18 20:32:34,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 303 transitions, 943 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 20:32:34,096 INFO L231 Difference]: Finished difference. Result has 332 places, 291 transitions, 831 flow [2022-11-18 20:32:34,097 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=831, PETRI_PLACES=332, PETRI_TRANSITIONS=291} [2022-11-18 20:32:34,097 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 57 predicate places. [2022-11-18 20:32:34,098 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 291 transitions, 831 flow [2022-11-18 20:32:34,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:34,098 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:34,099 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] [2022-11-18 20:32:34,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:32:34,099 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:34,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:34,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1688214733, now seen corresponding path program 1 times [2022-11-18 20:32:34,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:34,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139202589] [2022-11-18 20:32:34,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:34,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:34,228 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 20:32:34,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:34,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139202589] [2022-11-18 20:32:34,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139202589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:34,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:34,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:34,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285073116] [2022-11-18 20:32:34,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:34,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:34,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:34,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:34,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:34,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-18 20:32:34,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 291 transitions, 831 flow. Second operand has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:34,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:34,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-18 20:32:34,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:34,851 INFO L130 PetriNetUnfolder]: 262/1512 cut-off events. [2022-11-18 20:32:34,851 INFO L131 PetriNetUnfolder]: For 438/901 co-relation queries the response was YES. [2022-11-18 20:32:34,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 1512 events. 262/1512 cut-off events. For 438/901 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13439 event pairs, 120 based on Foata normal form. 6/1342 useless extension candidates. Maximal degree in co-relation 2558. Up to 276 conditions per place. [2022-11-18 20:32:34,894 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 54 selfloop transitions, 8 changer transitions 0/313 dead transitions. [2022-11-18 20:32:34,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 313 transitions, 1035 flow [2022-11-18 20:32:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:32:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:32:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1969 transitions. [2022-11-18 20:32:34,897 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8762794837561193 [2022-11-18 20:32:34,897 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1969 transitions. [2022-11-18 20:32:34,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1969 transitions. [2022-11-18 20:32:34,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:34,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1969 transitions. [2022-11-18 20:32:34,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.2857142857143) internal successors, (1969), 7 states have internal predecessors, (1969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:34,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:34,906 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:34,906 INFO L175 Difference]: Start difference. First operand has 332 places, 291 transitions, 831 flow. Second operand 7 states and 1969 transitions. [2022-11-18 20:32:34,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 313 transitions, 1035 flow [2022-11-18 20:32:34,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 313 transitions, 1033 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:32:34,915 INFO L231 Difference]: Finished difference. Result has 340 places, 295 transitions, 878 flow [2022-11-18 20:32:34,916 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=825, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=878, PETRI_PLACES=340, PETRI_TRANSITIONS=295} [2022-11-18 20:32:34,916 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 65 predicate places. [2022-11-18 20:32:34,916 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 295 transitions, 878 flow [2022-11-18 20:32:34,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:34,917 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:34,917 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] [2022-11-18 20:32:34,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:32:34,918 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:34,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:34,918 INFO L85 PathProgramCache]: Analyzing trace with hash -535056487, now seen corresponding path program 1 times [2022-11-18 20:32:34,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:34,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334997683] [2022-11-18 20:32:34,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:34,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:35,054 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 20:32:35,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:35,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334997683] [2022-11-18 20:32:35,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334997683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:35,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:35,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:32:35,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301049930] [2022-11-18 20:32:35,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:35,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:32:35,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:35,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:32:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:32:35,058 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 20:32:35,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 295 transitions, 878 flow. Second operand has 8 states, 8 states have (on average 277.25) internal successors, (2218), 8 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:35,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:35,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 20:32:35,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:36,360 INFO L130 PetriNetUnfolder]: 773/3953 cut-off events. [2022-11-18 20:32:36,360 INFO L131 PetriNetUnfolder]: For 934/1054 co-relation queries the response was YES. [2022-11-18 20:32:36,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6241 conditions, 3953 events. 773/3953 cut-off events. For 934/1054 co-relation queries the response was YES. Maximal size of possible extension queue 495. Compared 44942 event pairs, 2 based on Foata normal form. 0/3225 useless extension candidates. Maximal degree in co-relation 4361. Up to 774 conditions per place. [2022-11-18 20:32:36,405 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 38 selfloop transitions, 9 changer transitions 0/309 dead transitions. [2022-11-18 20:32:36,405 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 309 transitions, 1008 flow [2022-11-18 20:32:36,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:32:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:32:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2248 transitions. [2022-11-18 20:32:36,410 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8753894080996885 [2022-11-18 20:32:36,410 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2248 transitions. [2022-11-18 20:32:36,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2248 transitions. [2022-11-18 20:32:36,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:36,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2248 transitions. [2022-11-18 20:32:36,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:36,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:36,423 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:36,423 INFO L175 Difference]: Start difference. First operand has 340 places, 295 transitions, 878 flow. Second operand 8 states and 2248 transitions. [2022-11-18 20:32:36,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 309 transitions, 1008 flow [2022-11-18 20:32:36,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 309 transitions, 1008 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:32:36,434 INFO L231 Difference]: Finished difference. Result has 349 places, 296 transitions, 908 flow [2022-11-18 20:32:36,435 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=286, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=908, PETRI_PLACES=349, PETRI_TRANSITIONS=296} [2022-11-18 20:32:36,435 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 74 predicate places. [2022-11-18 20:32:36,435 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 296 transitions, 908 flow [2022-11-18 20:32:36,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.25) internal successors, (2218), 8 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:36,436 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:36,437 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] [2022-11-18 20:32:36,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:32:36,437 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:36,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:36,438 INFO L85 PathProgramCache]: Analyzing trace with hash 593119072, now seen corresponding path program 1 times [2022-11-18 20:32:36,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:36,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281916898] [2022-11-18 20:32:36,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:36,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:36,597 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 20:32:36,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:36,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281916898] [2022-11-18 20:32:36,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281916898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:36,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:36,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:32:36,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918274447] [2022-11-18 20:32:36,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:36,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:32:36,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:36,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:32:36,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:32:36,602 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 275 out of 321 [2022-11-18 20:32:36,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 296 transitions, 908 flow. Second operand has 8 states, 8 states have (on average 277.375) internal successors, (2219), 8 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:36,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:36,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 275 of 321 [2022-11-18 20:32:36,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:37,697 INFO L130 PetriNetUnfolder]: 647/3783 cut-off events. [2022-11-18 20:32:37,697 INFO L131 PetriNetUnfolder]: For 1014/1116 co-relation queries the response was YES. [2022-11-18 20:32:37,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6127 conditions, 3783 events. 647/3783 cut-off events. For 1014/1116 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 42191 event pairs, 2 based on Foata normal form. 0/3207 useless extension candidates. Maximal degree in co-relation 4277. Up to 688 conditions per place. [2022-11-18 20:32:37,744 INFO L137 encePairwiseOnDemand]: 311/321 looper letters, 41 selfloop transitions, 9 changer transitions 0/312 dead transitions. [2022-11-18 20:32:37,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 312 transitions, 1055 flow [2022-11-18 20:32:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:32:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-18 20:32:37,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2250 transitions. [2022-11-18 20:32:37,749 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8761682242990654 [2022-11-18 20:32:37,749 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2250 transitions. [2022-11-18 20:32:37,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2250 transitions. [2022-11-18 20:32:37,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:37,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2250 transitions. [2022-11-18 20:32:37,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 281.25) internal successors, (2250), 8 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:37,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:37,758 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 321.0) internal successors, (2889), 9 states have internal predecessors, (2889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:37,758 INFO L175 Difference]: Start difference. First operand has 349 places, 296 transitions, 908 flow. Second operand 8 states and 2250 transitions. [2022-11-18 20:32:37,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 312 transitions, 1055 flow [2022-11-18 20:32:37,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 312 transitions, 1046 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:32:37,771 INFO L231 Difference]: Finished difference. Result has 354 places, 297 transitions, 929 flow [2022-11-18 20:32:37,771 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=899, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=929, PETRI_PLACES=354, PETRI_TRANSITIONS=297} [2022-11-18 20:32:37,772 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 79 predicate places. [2022-11-18 20:32:37,772 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 297 transitions, 929 flow [2022-11-18 20:32:37,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 277.375) internal successors, (2219), 8 states have internal predecessors, (2219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:37,773 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:37,773 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] [2022-11-18 20:32:37,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:32:37,774 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:37,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:37,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1470243196, now seen corresponding path program 1 times [2022-11-18 20:32:37,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:37,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789688259] [2022-11-18 20:32:37,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:37,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:37,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:37,891 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 20:32:37,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:37,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789688259] [2022-11-18 20:32:37,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789688259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:37,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:37,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:37,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721289956] [2022-11-18 20:32:37,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:37,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:37,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:37,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:37,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:37,895 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-18 20:32:37,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 297 transitions, 929 flow. Second operand has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:37,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:37,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-18 20:32:37,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:39,032 INFO L130 PetriNetUnfolder]: 1089/3892 cut-off events. [2022-11-18 20:32:39,032 INFO L131 PetriNetUnfolder]: For 1633/2097 co-relation queries the response was YES. [2022-11-18 20:32:39,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7195 conditions, 3892 events. 1089/3892 cut-off events. For 1633/2097 co-relation queries the response was YES. Maximal size of possible extension queue 708. Compared 48513 event pairs, 580 based on Foata normal form. 23/3005 useless extension candidates. Maximal degree in co-relation 7085. Up to 1213 conditions per place. [2022-11-18 20:32:39,080 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 40 selfloop transitions, 7 changer transitions 4/311 dead transitions. [2022-11-18 20:32:39,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 311 transitions, 1067 flow [2022-11-18 20:32:39,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:32:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:32:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1962 transitions. [2022-11-18 20:32:39,083 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8731642189586115 [2022-11-18 20:32:39,083 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1962 transitions. [2022-11-18 20:32:39,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1962 transitions. [2022-11-18 20:32:39,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:39,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1962 transitions. [2022-11-18 20:32:39,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.2857142857143) internal successors, (1962), 7 states have internal predecessors, (1962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:39,090 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:39,091 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:39,091 INFO L175 Difference]: Start difference. First operand has 354 places, 297 transitions, 929 flow. Second operand 7 states and 1962 transitions. [2022-11-18 20:32:39,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 311 transitions, 1067 flow [2022-11-18 20:32:39,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 311 transitions, 1056 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:32:39,105 INFO L231 Difference]: Finished difference. Result has 358 places, 300 transitions, 954 flow [2022-11-18 20:32:39,106 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=954, PETRI_PLACES=358, PETRI_TRANSITIONS=300} [2022-11-18 20:32:39,106 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 83 predicate places. [2022-11-18 20:32:39,106 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 300 transitions, 954 flow [2022-11-18 20:32:39,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.6666666666667) internal successors, (1660), 6 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:39,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:32:39,107 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] [2022-11-18 20:32:39,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:32:39,108 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 20:32:39,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:32:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1900834914, now seen corresponding path program 1 times [2022-11-18 20:32:39,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:32:39,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496550583] [2022-11-18 20:32:39,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:32:39,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:32:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:32:39,231 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 20:32:39,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:32:39,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496550583] [2022-11-18 20:32:39,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496550583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:32:39,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:32:39,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:32:39,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106520664] [2022-11-18 20:32:39,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:32:39,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:32:39,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:32:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:32:39,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:32:39,234 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 321 [2022-11-18 20:32:39,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 300 transitions, 954 flow. Second operand has 6 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:39,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:32:39,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 321 [2022-11-18 20:32:39,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:32:40,199 INFO L130 PetriNetUnfolder]: 1009/3791 cut-off events. [2022-11-18 20:32:40,199 INFO L131 PetriNetUnfolder]: For 1716/2154 co-relation queries the response was YES. [2022-11-18 20:32:40,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7516 conditions, 3791 events. 1009/3791 cut-off events. For 1716/2154 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 46579 event pairs, 480 based on Foata normal form. 21/3069 useless extension candidates. Maximal degree in co-relation 7407. Up to 1008 conditions per place. [2022-11-18 20:32:40,229 INFO L137 encePairwiseOnDemand]: 313/321 looper letters, 0 selfloop transitions, 0 changer transitions 321/321 dead transitions. [2022-11-18 20:32:40,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 321 transitions, 1148 flow [2022-11-18 20:32:40,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:32:40,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:32:40,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1968 transitions. [2022-11-18 20:32:40,232 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8758344459279038 [2022-11-18 20:32:40,233 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1968 transitions. [2022-11-18 20:32:40,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1968 transitions. [2022-11-18 20:32:40,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:32:40,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1968 transitions. [2022-11-18 20:32:40,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 281.14285714285717) internal successors, (1968), 7 states have internal predecessors, (1968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:40,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:40,240 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 321.0) internal successors, (2568), 8 states have internal predecessors, (2568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:40,240 INFO L175 Difference]: Start difference. First operand has 358 places, 300 transitions, 954 flow. Second operand 7 states and 1968 transitions. [2022-11-18 20:32:40,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 321 transitions, 1148 flow [2022-11-18 20:32:40,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 321 transitions, 1146 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:32:40,260 INFO L231 Difference]: Finished difference. Result has 362 places, 0 transitions, 0 flow [2022-11-18 20:32:40,260 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=321, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=362, PETRI_TRANSITIONS=0} [2022-11-18 20:32:40,261 INFO L288 CegarLoopForPetriNet]: 275 programPoint places, 87 predicate places. [2022-11-18 20:32:40,261 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 0 transitions, 0 flow [2022-11-18 20:32:40,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.8333333333333) internal successors, (1661), 6 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:32:40,264 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2022-11-18 20:32:40,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2022-11-18 20:32:40,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2022-11-18 20:32:40,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2022-11-18 20:32:40,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2022-11-18 20:32:40,265 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2022-11-18 20:32:40,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2022-11-18 20:32:40,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2022-11-18 20:32:40,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2022-11-18 20:32:40,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2022-11-18 20:32:40,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2022-11-18 20:32:40,266 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2022-11-18 20:32:40,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2022-11-18 20:32:40,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2022-11-18 20:32:40,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2022-11-18 20:32:40,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2022-11-18 20:32:40,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2022-11-18 20:32:40,267 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2022-11-18 20:32:40,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2022-11-18 20:32:40,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2022-11-18 20:32:40,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2022-11-18 20:32:40,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2022-11-18 20:32:40,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2022-11-18 20:32:40,268 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2022-11-18 20:32:40,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2022-11-18 20:32:40,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2022-11-18 20:32:40,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2022-11-18 20:32:40,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2022-11-18 20:32:40,269 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2022-11-18 20:32:40,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2022-11-18 20:32:40,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2022-11-18 20:32:40,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2022-11-18 20:32:40,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2022-11-18 20:32:40,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2022-11-18 20:32:40,270 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2022-11-18 20:32:40,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2022-11-18 20:32:40,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2022-11-18 20:32:40,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2022-11-18 20:32:40,271 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2022-11-18 20:32:40,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:32:40,272 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-18 20:32:40,278 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-18 20:32:40,278 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-18 20:32:40,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 08:32:40 BasicIcfg [2022-11-18 20:32:40,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-18 20:32:40,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-18 20:32:40,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-18 20:32:40,284 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-18 20:32:40,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:32:16" (3/4) ... [2022-11-18 20:32:40,287 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-18 20:32:40,293 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-18 20:32:40,293 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-18 20:32:40,293 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-18 20:32:40,297 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-18 20:32:40,298 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-18 20:32:40,298 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-18 20:32:40,298 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-18 20:32:40,330 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/witness.graphml [2022-11-18 20:32:40,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-18 20:32:40,331 INFO L158 Benchmark]: Toolchain (without parser) took 24865.61ms. Allocated memory was 134.2MB in the beginning and 1.1GB in the end (delta: 975.2MB). Free memory was 98.0MB in the beginning and 802.1MB in the end (delta: -704.1MB). Peak memory consumption was 269.1MB. Max. memory is 16.1GB. [2022-11-18 20:32:40,332 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 134.2MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-18 20:32:40,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 296.34ms. Allocated memory is still 134.2MB. Free memory was 97.8MB in the beginning and 109.6MB in the end (delta: -11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 20:32:40,332 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.06ms. Allocated memory is still 134.2MB. Free memory was 109.6MB in the beginning and 107.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:32:40,333 INFO L158 Benchmark]: Boogie Preprocessor took 29.81ms. Allocated memory is still 134.2MB. Free memory was 107.5MB in the beginning and 105.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:32:40,333 INFO L158 Benchmark]: RCFGBuilder took 678.29ms. Allocated memory is still 134.2MB. Free memory was 105.4MB in the beginning and 82.2MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-18 20:32:40,333 INFO L158 Benchmark]: TraceAbstraction took 23750.97ms. Allocated memory was 134.2MB in the beginning and 1.1GB in the end (delta: 975.2MB). Free memory was 81.3MB in the beginning and 805.2MB in the end (delta: -723.9MB). Peak memory consumption was 695.6MB. Max. memory is 16.1GB. [2022-11-18 20:32:40,334 INFO L158 Benchmark]: Witness Printer took 47.61ms. Allocated memory is still 1.1GB. Free memory was 805.2MB in the beginning and 802.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 20:32:40,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 134.2MB. Free memory is still 115.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 296.34ms. Allocated memory is still 134.2MB. Free memory was 97.8MB in the beginning and 109.6MB in the end (delta: -11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.06ms. Allocated memory is still 134.2MB. Free memory was 109.6MB in the beginning and 107.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.81ms. Allocated memory is still 134.2MB. Free memory was 107.5MB in the beginning and 105.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 678.29ms. Allocated memory is still 134.2MB. Free memory was 105.4MB in the beginning and 82.2MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 23750.97ms. Allocated memory was 134.2MB in the beginning and 1.1GB in the end (delta: 975.2MB). Free memory was 81.3MB in the beginning and 805.2MB in the end (delta: -723.9MB). Peak memory consumption was 695.6MB. Max. memory is 16.1GB. * Witness Printer took 47.61ms. Allocated memory is still 1.1GB. Free memory was 805.2MB in the beginning and 802.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 90]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 494 locations, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.5s, OverallIterations: 27, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 19.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1493 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1493 mSDsluCounter, 723 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 354 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2358 IncrementalHoareTripleChecker+Invalid, 2427 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 369 mSDtfsCounter, 2358 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=954occurred in iteration=26, InterpolantAutomatonStates: 162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2229 NumberOfCodeBlocks, 2229 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 2202 ConstructedInterpolants, 0 QuantifiedInterpolants, 4737 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 27 InterpolantComputations, 27 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-18 20:32:40,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6595a4d9-afd2-4ac9-907d-1fca55bd4ca3/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE