./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/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_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/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_f802a576-31a6-4bcc-b5f6-95c244f93e27/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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- 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 20:06:48,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:06:48,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:06:48,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:06:48,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:06:49,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:06:49,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:06:49,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:06:49,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:06:49,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:06:49,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:06:49,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:06:49,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:06:49,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:06:49,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:06:49,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:06:49,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:06:49,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:06:49,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:06:49,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:06:49,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:06:49,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:06:49,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:06:49,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:06:49,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:06:49,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:06:49,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:06:49,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:06:49,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:06:49,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:06:49,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:06:49,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:06:49,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:06:49,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:06:49,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:06:49,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:06:49,063 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:06:49,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:06:49,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:06:49,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:06:49,066 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:06:49,067 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:06:49,107 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:06:49,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:06:49,108 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:06:49,109 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:06:49,109 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:06:49,110 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:06:49,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:06:49,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:06:49,111 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:06:49,111 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:06:49,112 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:06:49,113 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:06:49,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:06:49,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:06:49,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:06:49,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:06:49,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:06:49,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:06:49,114 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:06:49,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:06:49,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:06:49,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:06:49,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:06:49,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:06:49,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:06:49,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:06:49,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:06:49,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:06:49,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:06:49,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:06:49,117 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:06:49,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:06:49,118 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:06:49,118 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:06:49,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:06:49,119 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_f802a576-31a6-4bcc-b5f6-95c244f93e27/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2022-11-18 20:06:49,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:06:49,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:06:49,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:06:49,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:06:49,530 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:06:49,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-18 20:06:49,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/data/896da8b14/4f3c818be0c841df9d57089c4e09ab5b/FLAGfb103586c [2022-11-18 20:06:50,131 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:06:50,132 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-18 20:06:50,151 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/data/896da8b14/4f3c818be0c841df9d57089c4e09ab5b/FLAGfb103586c [2022-11-18 20:06:50,468 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/data/896da8b14/4f3c818be0c841df9d57089c4e09ab5b [2022-11-18 20:06:50,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:06:50,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:06:50,479 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:06:50,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:06:50,483 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:06:50,484 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:06:50" (1/1) ... [2022-11-18 20:06:50,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1965f417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:50, skipping insertion in model container [2022-11-18 20:06:50,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:06:50" (1/1) ... [2022-11-18 20:06:50,495 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:06:50,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:06:50,828 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_f802a576-31a6-4bcc-b5f6-95c244f93e27/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-11-18 20:06:51,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:06:51,046 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:06:51,064 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_f802a576-31a6-4bcc-b5f6-95c244f93e27/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-11-18 20:06:51,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:06:51,136 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:06:51,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51 WrapperNode [2022-11-18 20:06:51,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:06:51,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:06:51,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:06:51,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:06:51,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,212 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 124 [2022-11-18 20:06:51,212 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:06:51,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:06:51,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:06:51,213 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:06:51,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,256 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:06:51,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:06:51,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:06:51,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:06:51,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (1/1) ... [2022-11-18 20:06:51,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:06:51,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:06:51,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:06:51,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f802a576-31a6-4bcc-b5f6-95c244f93e27/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:06:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:06:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-11-18 20:06:51,347 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-11-18 20:06:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:06:51,347 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:06:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:06:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:06:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:06:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:06:51,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:06:51,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:06:51,350 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 20:06:51,575 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:06:51,578 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:06:51,939 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:06:51,948 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:06:51,960 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-18 20:06:51,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:51 BoogieIcfgContainer [2022-11-18 20:06:51,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:06:51,965 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:06:51,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:06:51,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:06:51,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:06:50" (1/3) ... [2022-11-18 20:06:51,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752b4ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:06:51, skipping insertion in model container [2022-11-18 20:06:51,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:06:51" (2/3) ... [2022-11-18 20:06:51,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@752b4ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:06:51, skipping insertion in model container [2022-11-18 20:06:51,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:06:51" (3/3) ... [2022-11-18 20:06:51,976 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-11-18 20:06:51,986 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:06:51,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:06:51,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-18 20:06:51,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:06:52,149 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-18 20:06:52,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 152 transitions, 309 flow [2022-11-18 20:06:52,294 INFO L130 PetriNetUnfolder]: 10/151 cut-off events. [2022-11-18 20:06:52,294 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:06:52,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 151 events. 10/151 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 268 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2022-11-18 20:06:52,304 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 152 transitions, 309 flow [2022-11-18 20:06:52,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 151 transitions, 305 flow [2022-11-18 20:06:52,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:06:52,331 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;@277f054f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:06:52,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2022-11-18 20:06:52,367 INFO L130 PetriNetUnfolder]: 3/97 cut-off events. [2022-11-18 20:06:52,367 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:06:52,367 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:52,368 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] [2022-11-18 20:06:52,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 20:06:52,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:52,376 INFO L85 PathProgramCache]: Analyzing trace with hash 776007129, now seen corresponding path program 1 times [2022-11-18 20:06:52,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:52,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083318017] [2022-11-18 20:06:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:52,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:53,064 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 20:06:53,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:53,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083318017] [2022-11-18 20:06:53,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083318017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:53,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:53,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:06:53,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601300225] [2022-11-18 20:06:53,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:53,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:06:53,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:53,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:06:53,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:06:53,142 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 152 [2022-11-18 20:06:53,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 151 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:53,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:53,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 152 [2022-11-18 20:06:53,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:53,844 INFO L130 PetriNetUnfolder]: 239/1130 cut-off events. [2022-11-18 20:06:53,845 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:06:53,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1583 conditions, 1130 events. 239/1130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 6925 event pairs, 65 based on Foata normal form. 98/1088 useless extension candidates. Maximal degree in co-relation 1526. Up to 238 conditions per place. [2022-11-18 20:06:53,863 INFO L137 encePairwiseOnDemand]: 134/152 looper letters, 84 selfloop transitions, 16 changer transitions 0/206 dead transitions. [2022-11-18 20:06:53,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 206 transitions, 615 flow [2022-11-18 20:06:53,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:06:53,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:06:53,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1238 transitions. [2022-11-18 20:06:53,893 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8144736842105263 [2022-11-18 20:06:53,894 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1238 transitions. [2022-11-18 20:06:53,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1238 transitions. [2022-11-18 20:06:53,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:53,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1238 transitions. [2022-11-18 20:06:53,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 123.8) internal successors, (1238), 10 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:53,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:53,927 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:53,930 INFO L175 Difference]: Start difference. First operand has 145 places, 151 transitions, 305 flow. Second operand 10 states and 1238 transitions. [2022-11-18 20:06:53,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 206 transitions, 615 flow [2022-11-18 20:06:53,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 206 transitions, 614 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:06:53,946 INFO L231 Difference]: Finished difference. Result has 155 places, 159 transitions, 409 flow [2022-11-18 20:06:53,948 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=409, PETRI_PLACES=155, PETRI_TRANSITIONS=159} [2022-11-18 20:06:53,953 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 10 predicate places. [2022-11-18 20:06:53,954 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 159 transitions, 409 flow [2022-11-18 20:06:53,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.33333333333333) internal successors, (674), 6 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:53,956 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:53,957 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] [2022-11-18 20:06:53,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:06:53,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 20:06:53,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:53,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1713582480, now seen corresponding path program 1 times [2022-11-18 20:06:53,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:53,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931678980] [2022-11-18 20:06:53,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:53,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:54,916 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 20:06:54,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:54,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931678980] [2022-11-18 20:06:54,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931678980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:54,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:54,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:06:54,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52427939] [2022-11-18 20:06:54,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:54,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:06:54,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:06:54,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:06:54,931 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-18 20:06:54,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 159 transitions, 409 flow. Second operand has 16 states, 16 states have (on average 95.125) internal successors, (1522), 16 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:54,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:54,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-18 20:06:54,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:56,904 INFO L130 PetriNetUnfolder]: 558/2485 cut-off events. [2022-11-18 20:06:56,904 INFO L131 PetriNetUnfolder]: For 302/305 co-relation queries the response was YES. [2022-11-18 20:06:56,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4011 conditions, 2485 events. 558/2485 cut-off events. For 302/305 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 17832 event pairs, 56 based on Foata normal form. 21/2271 useless extension candidates. Maximal degree in co-relation 3936. Up to 457 conditions per place. [2022-11-18 20:06:56,924 INFO L137 encePairwiseOnDemand]: 130/152 looper letters, 166 selfloop transitions, 44 changer transitions 0/300 dead transitions. [2022-11-18 20:06:56,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 300 transitions, 1212 flow [2022-11-18 20:06:56,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:06:56,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:06:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2139 transitions. [2022-11-18 20:06:56,931 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6701127819548872 [2022-11-18 20:06:56,932 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2139 transitions. [2022-11-18 20:06:56,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2139 transitions. [2022-11-18 20:06:56,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:56,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2139 transitions. [2022-11-18 20:06:56,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 101.85714285714286) internal successors, (2139), 21 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:56,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:56,951 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:56,952 INFO L175 Difference]: Start difference. First operand has 155 places, 159 transitions, 409 flow. Second operand 21 states and 2139 transitions. [2022-11-18 20:06:56,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 300 transitions, 1212 flow [2022-11-18 20:06:56,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 300 transitions, 1212 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:06:56,965 INFO L231 Difference]: Finished difference. Result has 187 places, 193 transitions, 754 flow [2022-11-18 20:06:56,965 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=754, PETRI_PLACES=187, PETRI_TRANSITIONS=193} [2022-11-18 20:06:56,966 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 42 predicate places. [2022-11-18 20:06:56,967 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 193 transitions, 754 flow [2022-11-18 20:06:56,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.125) internal successors, (1522), 16 states have internal predecessors, (1522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:56,968 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:56,968 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] [2022-11-18 20:06:56,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:06:56,969 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 20:06:56,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:56,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1057699436, now seen corresponding path program 1 times [2022-11-18 20:06:56,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:56,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826678740] [2022-11-18 20:06:56,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:56,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:57,647 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 20:06:57,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:57,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826678740] [2022-11-18 20:06:57,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826678740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:57,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:57,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-18 20:06:57,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787688599] [2022-11-18 20:06:57,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:57,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:06:57,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:06:57,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:06:57,656 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 152 [2022-11-18 20:06:57,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 193 transitions, 754 flow. Second operand has 15 states, 15 states have (on average 91.46666666666667) internal successors, (1372), 15 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:57,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:57,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 152 [2022-11-18 20:06:57,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:59,338 INFO L130 PetriNetUnfolder]: 533/2967 cut-off events. [2022-11-18 20:06:59,339 INFO L131 PetriNetUnfolder]: For 1807/1878 co-relation queries the response was YES. [2022-11-18 20:06:59,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5806 conditions, 2967 events. 533/2967 cut-off events. For 1807/1878 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 22297 event pairs, 134 based on Foata normal form. 64/2726 useless extension candidates. Maximal degree in co-relation 5781. Up to 762 conditions per place. [2022-11-18 20:06:59,370 INFO L137 encePairwiseOnDemand]: 137/152 looper letters, 124 selfloop transitions, 24 changer transitions 27/278 dead transitions. [2022-11-18 20:06:59,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 278 transitions, 1380 flow [2022-11-18 20:06:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:06:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-18 20:06:59,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2026 transitions. [2022-11-18 20:06:59,380 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6347117794486216 [2022-11-18 20:06:59,380 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2026 transitions. [2022-11-18 20:06:59,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2026 transitions. [2022-11-18 20:06:59,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:59,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2026 transitions. [2022-11-18 20:06:59,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 96.47619047619048) internal successors, (2026), 21 states have internal predecessors, (2026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:59,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:59,401 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 152.0) internal successors, (3344), 22 states have internal predecessors, (3344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:59,401 INFO L175 Difference]: Start difference. First operand has 187 places, 193 transitions, 754 flow. Second operand 21 states and 2026 transitions. [2022-11-18 20:06:59,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 278 transitions, 1380 flow [2022-11-18 20:06:59,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 278 transitions, 1354 flow, removed 6 selfloop flow, removed 6 redundant places. [2022-11-18 20:06:59,436 INFO L231 Difference]: Finished difference. Result has 210 places, 195 transitions, 794 flow [2022-11-18 20:06:59,436 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=794, PETRI_PLACES=210, PETRI_TRANSITIONS=195} [2022-11-18 20:06:59,439 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 65 predicate places. [2022-11-18 20:06:59,440 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 195 transitions, 794 flow [2022-11-18 20:06:59,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 91.46666666666667) internal successors, (1372), 15 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:59,442 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:06:59,443 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] [2022-11-18 20:06:59,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:06:59,444 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 20:06:59,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:06:59,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1529392297, now seen corresponding path program 1 times [2022-11-18 20:06:59,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:06:59,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778841047] [2022-11-18 20:06:59,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:06:59,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:06:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:06:59,580 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 20:06:59,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:06:59,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778841047] [2022-11-18 20:06:59,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778841047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:06:59,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:06:59,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:06:59,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576107665] [2022-11-18 20:06:59,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:06:59,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:06:59,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:06:59,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:06:59,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:06:59,590 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 152 [2022-11-18 20:06:59,591 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 195 transitions, 794 flow. Second operand has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:06:59,591 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:06:59,592 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 152 [2022-11-18 20:06:59,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:06:59,975 INFO L130 PetriNetUnfolder]: 104/1436 cut-off events. [2022-11-18 20:06:59,975 INFO L131 PetriNetUnfolder]: For 463/495 co-relation queries the response was YES. [2022-11-18 20:06:59,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2413 conditions, 1436 events. 104/1436 cut-off events. For 463/495 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8907 event pairs, 2 based on Foata normal form. 9/1352 useless extension candidates. Maximal degree in co-relation 2328. Up to 135 conditions per place. [2022-11-18 20:06:59,993 INFO L137 encePairwiseOnDemand]: 146/152 looper letters, 15 selfloop transitions, 4 changer transitions 0/202 dead transitions. [2022-11-18 20:06:59,993 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 202 transitions, 846 flow [2022-11-18 20:06:59,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:06:59,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:06:59,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 681 transitions. [2022-11-18 20:06:59,997 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8960526315789473 [2022-11-18 20:06:59,998 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 681 transitions. [2022-11-18 20:06:59,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 681 transitions. [2022-11-18 20:06:59,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:06:59,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 681 transitions. [2022-11-18 20:07:00,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:00,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:00,007 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 152.0) internal successors, (912), 6 states have internal predecessors, (912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:00,008 INFO L175 Difference]: Start difference. First operand has 210 places, 195 transitions, 794 flow. Second operand 5 states and 681 transitions. [2022-11-18 20:07:00,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 202 transitions, 846 flow [2022-11-18 20:07:00,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 202 transitions, 827 flow, removed 4 selfloop flow, removed 9 redundant places. [2022-11-18 20:07:00,021 INFO L231 Difference]: Finished difference. Result has 203 places, 198 transitions, 805 flow [2022-11-18 20:07:00,022 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=805, PETRI_PLACES=203, PETRI_TRANSITIONS=198} [2022-11-18 20:07:00,024 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 58 predicate places. [2022-11-18 20:07:00,025 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 198 transitions, 805 flow [2022-11-18 20:07:00,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.5) internal successors, (534), 4 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:00,028 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:00,028 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 20:07:00,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:07:00,031 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 20:07:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:00,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1386784249, now seen corresponding path program 1 times [2022-11-18 20:07:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:00,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497482544] [2022-11-18 20:07:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:00,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:00,538 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 20:07:00,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:00,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497482544] [2022-11-18 20:07:00,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497482544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:00,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:00,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:07:00,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595206120] [2022-11-18 20:07:00,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:00,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:07:00,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:00,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:07:00,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:07:00,545 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-18 20:07:00,547 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 198 transitions, 805 flow. Second operand has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:00,547 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:00,547 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-18 20:07:00,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:05,008 INFO L130 PetriNetUnfolder]: 2746/10326 cut-off events. [2022-11-18 20:07:05,008 INFO L131 PetriNetUnfolder]: For 8291/8472 co-relation queries the response was YES. [2022-11-18 20:07:05,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23397 conditions, 10326 events. 2746/10326 cut-off events. For 8291/8472 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 97785 event pairs, 365 based on Foata normal form. 150/10010 useless extension candidates. Maximal degree in co-relation 23306. Up to 1508 conditions per place. [2022-11-18 20:07:05,138 INFO L137 encePairwiseOnDemand]: 132/152 looper letters, 495 selfloop transitions, 161 changer transitions 0/760 dead transitions. [2022-11-18 20:07:05,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 760 transitions, 4783 flow [2022-11-18 20:07:05,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:07:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:07:05,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3815 transitions. [2022-11-18 20:07:05,150 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6971856725146199 [2022-11-18 20:07:05,151 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3815 transitions. [2022-11-18 20:07:05,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3815 transitions. [2022-11-18 20:07:05,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:05,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3815 transitions. [2022-11-18 20:07:05,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 105.97222222222223) internal successors, (3815), 36 states have internal predecessors, (3815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:05,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:05,179 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:05,179 INFO L175 Difference]: Start difference. First operand has 203 places, 198 transitions, 805 flow. Second operand 36 states and 3815 transitions. [2022-11-18 20:07:05,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 760 transitions, 4783 flow [2022-11-18 20:07:05,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 760 transitions, 4781 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:07:05,240 INFO L231 Difference]: Finished difference. Result has 268 places, 374 transitions, 2573 flow [2022-11-18 20:07:05,241 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=803, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2573, PETRI_PLACES=268, PETRI_TRANSITIONS=374} [2022-11-18 20:07:05,242 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 123 predicate places. [2022-11-18 20:07:05,242 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 374 transitions, 2573 flow [2022-11-18 20:07:05,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:05,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:05,243 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 20:07:05,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:07:05,244 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 20:07:05,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:05,245 INFO L85 PathProgramCache]: Analyzing trace with hash 284602123, now seen corresponding path program 2 times [2022-11-18 20:07:05,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:05,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663102688] [2022-11-18 20:07:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:05,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:05,819 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 20:07:05,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:05,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663102688] [2022-11-18 20:07:05,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663102688] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:05,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:05,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:07:05,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718146806] [2022-11-18 20:07:05,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:05,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:07:05,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:05,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:07:05,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:07:05,827 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-18 20:07:05,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 374 transitions, 2573 flow. Second operand has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:05,829 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:05,829 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-18 20:07:05,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:11,898 INFO L130 PetriNetUnfolder]: 4039/15054 cut-off events. [2022-11-18 20:07:11,898 INFO L131 PetriNetUnfolder]: For 46129/46529 co-relation queries the response was YES. [2022-11-18 20:07:12,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45823 conditions, 15054 events. 4039/15054 cut-off events. For 46129/46529 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 155309 event pairs, 577 based on Foata normal form. 258/14925 useless extension candidates. Maximal degree in co-relation 45701. Up to 3376 conditions per place. [2022-11-18 20:07:12,103 INFO L137 encePairwiseOnDemand]: 133/152 looper letters, 562 selfloop transitions, 208 changer transitions 0/874 dead transitions. [2022-11-18 20:07:12,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 874 transitions, 8017 flow [2022-11-18 20:07:12,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:07:12,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-18 20:07:12,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2776 transitions. [2022-11-18 20:07:12,112 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7024291497975709 [2022-11-18 20:07:12,112 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2776 transitions. [2022-11-18 20:07:12,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2776 transitions. [2022-11-18 20:07:12,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:12,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2776 transitions. [2022-11-18 20:07:12,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 106.76923076923077) internal successors, (2776), 26 states have internal predecessors, (2776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:12,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:12,132 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:12,133 INFO L175 Difference]: Start difference. First operand has 268 places, 374 transitions, 2573 flow. Second operand 26 states and 2776 transitions. [2022-11-18 20:07:12,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 874 transitions, 8017 flow [2022-11-18 20:07:12,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 874 transitions, 7933 flow, removed 42 selfloop flow, removed 0 redundant places. [2022-11-18 20:07:12,556 INFO L231 Difference]: Finished difference. Result has 315 places, 537 transitions, 4987 flow [2022-11-18 20:07:12,557 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2519, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4987, PETRI_PLACES=315, PETRI_TRANSITIONS=537} [2022-11-18 20:07:12,558 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 170 predicate places. [2022-11-18 20:07:12,558 INFO L495 AbstractCegarLoop]: Abstraction has has 315 places, 537 transitions, 4987 flow [2022-11-18 20:07:12,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:12,559 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:12,560 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 20:07:12,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:07:12,560 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 20:07:12,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:12,561 INFO L85 PathProgramCache]: Analyzing trace with hash 622819631, now seen corresponding path program 3 times [2022-11-18 20:07:12,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:12,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020810680] [2022-11-18 20:07:12,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:12,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:13,043 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 20:07:13,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:13,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020810680] [2022-11-18 20:07:13,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020810680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:13,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:13,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:07:13,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731563786] [2022-11-18 20:07:13,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:13,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:07:13,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:13,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:07:13,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:07:13,054 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-18 20:07:13,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 537 transitions, 4987 flow. Second operand has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:13,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:13,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-18 20:07:13,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:25,204 INFO L130 PetriNetUnfolder]: 7958/29387 cut-off events. [2022-11-18 20:07:25,210 INFO L131 PetriNetUnfolder]: For 174417/175434 co-relation queries the response was YES. [2022-11-18 20:07:25,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105883 conditions, 29387 events. 7958/29387 cut-off events. For 174417/175434 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 338134 event pairs, 1927 based on Foata normal form. 550/29064 useless extension candidates. Maximal degree in co-relation 105739. Up to 4239 conditions per place. [2022-11-18 20:07:25,747 INFO L137 encePairwiseOnDemand]: 133/152 looper letters, 826 selfloop transitions, 454 changer transitions 0/1384 dead transitions. [2022-11-18 20:07:25,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1384 transitions, 16532 flow [2022-11-18 20:07:25,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-18 20:07:25,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-11-18 20:07:25,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3393 transitions. [2022-11-18 20:07:25,758 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6975740131578947 [2022-11-18 20:07:25,758 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3393 transitions. [2022-11-18 20:07:25,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3393 transitions. [2022-11-18 20:07:25,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:25,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3393 transitions. [2022-11-18 20:07:25,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 106.03125) internal successors, (3393), 32 states have internal predecessors, (3393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:25,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:25,794 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 152.0) internal successors, (5016), 33 states have internal predecessors, (5016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:25,803 INFO L175 Difference]: Start difference. First operand has 315 places, 537 transitions, 4987 flow. Second operand 32 states and 3393 transitions. [2022-11-18 20:07:25,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1384 transitions, 16532 flow [2022-11-18 20:07:27,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 1384 transitions, 15612 flow, removed 460 selfloop flow, removed 0 redundant places. [2022-11-18 20:07:27,487 INFO L231 Difference]: Finished difference. Result has 376 places, 900 transitions, 11111 flow [2022-11-18 20:07:27,488 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=4599, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=11111, PETRI_PLACES=376, PETRI_TRANSITIONS=900} [2022-11-18 20:07:27,488 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 231 predicate places. [2022-11-18 20:07:27,488 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 900 transitions, 11111 flow [2022-11-18 20:07:27,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:27,490 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:27,490 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 20:07:27,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:07:27,490 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 20:07:27,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:27,491 INFO L85 PathProgramCache]: Analyzing trace with hash 402086713, now seen corresponding path program 4 times [2022-11-18 20:07:27,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:27,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878816963] [2022-11-18 20:07:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:27,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:27,834 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 20:07:27,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:27,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878816963] [2022-11-18 20:07:27,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878816963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:27,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:27,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:07:27,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241450546] [2022-11-18 20:07:27,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:27,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:07:27,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:27,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:07:27,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:07:27,844 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-18 20:07:27,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 900 transitions, 11111 flow. Second operand has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:27,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:27,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-18 20:07:27,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:07:47,155 INFO L130 PetriNetUnfolder]: 10813/40382 cut-off events. [2022-11-18 20:07:47,156 INFO L131 PetriNetUnfolder]: For 387310/388835 co-relation queries the response was YES. [2022-11-18 20:07:47,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162082 conditions, 40382 events. 10813/40382 cut-off events. For 387310/388835 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 488185 event pairs, 2550 based on Foata normal form. 694/39883 useless extension candidates. Maximal degree in co-relation 161907. Up to 4801 conditions per place. [2022-11-18 20:07:48,189 INFO L137 encePairwiseOnDemand]: 133/152 looper letters, 1134 selfloop transitions, 559 changer transitions 0/1797 dead transitions. [2022-11-18 20:07:48,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 1797 transitions, 25256 flow [2022-11-18 20:07:48,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:07:48,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-11-18 20:07:48,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2928 transitions. [2022-11-18 20:07:48,199 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7134502923976608 [2022-11-18 20:07:48,200 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2928 transitions. [2022-11-18 20:07:48,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2928 transitions. [2022-11-18 20:07:48,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:07:48,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2928 transitions. [2022-11-18 20:07:48,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 108.44444444444444) internal successors, (2928), 27 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:48,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:48,222 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 152.0) internal successors, (4256), 28 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:48,223 INFO L175 Difference]: Start difference. First operand has 376 places, 900 transitions, 11111 flow. Second operand 27 states and 2928 transitions. [2022-11-18 20:07:48,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 1797 transitions, 25256 flow [2022-11-18 20:07:53,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 1797 transitions, 24292 flow, removed 480 selfloop flow, removed 1 redundant places. [2022-11-18 20:07:53,051 INFO L231 Difference]: Finished difference. Result has 423 places, 1243 transitions, 18121 flow [2022-11-18 20:07:53,052 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=10397, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=900, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=18121, PETRI_PLACES=423, PETRI_TRANSITIONS=1243} [2022-11-18 20:07:53,053 INFO L288 CegarLoopForPetriNet]: 145 programPoint places, 278 predicate places. [2022-11-18 20:07:53,053 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 1243 transitions, 18121 flow [2022-11-18 20:07:53,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:53,054 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:07:53,055 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 20:07:53,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:07:53,055 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2022-11-18 20:07:53,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:07:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1462628667, now seen corresponding path program 5 times [2022-11-18 20:07:53,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:07:53,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990465670] [2022-11-18 20:07:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:07:53,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:07:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:07:53,435 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 20:07:53,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:07:53,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990465670] [2022-11-18 20:07:53,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990465670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:07:53,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:07:53,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:07:53,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380025783] [2022-11-18 20:07:53,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:07:53,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:07:53,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:07:53,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:07:53,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:07:53,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 152 [2022-11-18 20:07:53,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 1243 transitions, 18121 flow. Second operand has 11 states, 11 states have (on average 96.27272727272727) internal successors, (1059), 11 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:07:53,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:07:53,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 152 [2022-11-18 20:07:53,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:08:16,995 INFO L130 PetriNetUnfolder]: 11624/42296 cut-off events. [2022-11-18 20:08:16,995 INFO L131 PetriNetUnfolder]: For 570078/571854 co-relation queries the response was YES. [2022-11-18 20:08:17,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186278 conditions, 42296 events. 11624/42296 cut-off events. For 570078/571854 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 512955 event pairs, 2974 based on Foata normal form. 836/41901 useless extension candidates. Maximal degree in co-relation 186081. Up to 9541 conditions per place. [2022-11-18 20:08:18,160 INFO L137 encePairwiseOnDemand]: 132/152 looper letters, 1186 selfloop transitions, 648 changer transitions 0/1938 dead transitions. [2022-11-18 20:08:18,161 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 1938 transitions, 30867 flow [2022-11-18 20:08:18,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:08:18,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-11-18 20:08:18,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3843 transitions. [2022-11-18 20:08:18,171 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7023026315789473 [2022-11-18 20:08:18,171 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3843 transitions. [2022-11-18 20:08:18,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3843 transitions. [2022-11-18 20:08:18,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:08:18,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3843 transitions. [2022-11-18 20:08:18,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 106.75) internal successors, (3843), 36 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:18,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:18,196 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 152.0) internal successors, (5624), 37 states have internal predecessors, (5624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:08:18,196 INFO L175 Difference]: Start difference. First operand has 423 places, 1243 transitions, 18121 flow. Second operand 36 states and 3843 transitions. [2022-11-18 20:08:18,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 1938 transitions, 30867 flow