./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8 --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 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f --- 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-e04fb08 [2022-11-16 11:27:17,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:27:17,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:27:18,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:27:18,018 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:27:18,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:27:18,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:27:18,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:27:18,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:27:18,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:27:18,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:27:18,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:27:18,041 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:27:18,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:27:18,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:27:18,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:27:18,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:27:18,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:27:18,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:27:18,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:27:18,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:27:18,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:27:18,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:27:18,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:27:18,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:27:18,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:27:18,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:27:18,060 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:27:18,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:27:18,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:27:18,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:27:18,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:27:18,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:27:18,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:27:18,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:27:18,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:27:18,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:27:18,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:27:18,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:27:18,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:27:18,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:27:18,073 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:27:18,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:27:18,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:27:18,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:27:18,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:27:18,124 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:27:18,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:27:18,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:27:18,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:27:18,126 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:27:18,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:27:18,126 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:27:18,126 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:27:18,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:27:18,127 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:27:18,127 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:27:18,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:27:18,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:27:18,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:27:18,128 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:27:18,128 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:27:18,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:27:18,128 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:27:18,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:27:18,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:27:18,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:27:18,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:27:18,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:27:18,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:27:18,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:27:18,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:27:18,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:27:18,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:27:18,131 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:27:18,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:27:18,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:27:18,131 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2022-11-16 11:27:18,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:27:18,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:27:18,429 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:27:18,430 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:27:18,431 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:27:18,432 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-16 11:27:18,513 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/data/d9c096371/300eec4d15424989988a920806698df3/FLAGb31e11612 [2022-11-16 11:27:19,118 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:27:19,119 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-16 11:27:19,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/data/d9c096371/300eec4d15424989988a920806698df3/FLAGb31e11612 [2022-11-16 11:27:19,358 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/data/d9c096371/300eec4d15424989988a920806698df3 [2022-11-16 11:27:19,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:27:19,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:27:19,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:27:19,370 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:27:19,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:27:19,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:27:19" (1/1) ... [2022-11-16 11:27:19,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aec324f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:19, skipping insertion in model container [2022-11-16 11:27:19,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:27:19" (1/1) ... [2022-11-16 11:27:19,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:27:19,446 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:27:19,675 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 11:27:20,012 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-16 11:27:20,016 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-16 11:27:20,018 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-16 11:27:20,073 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-16 11:27:20,073 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-16 11:27:20,076 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-16 11:27:20,076 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-16 11:27:20,082 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:27:20,092 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:27:20,103 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-16 11:27:20,127 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-16 11:27:20,128 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-16 11:27:20,128 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-16 11:27:20,140 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-16 11:27:20,141 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-16 11:27:20,142 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-16 11:27:20,143 WARN L229 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_fbf2efc8-90db-412c-9ad3-22103b92e3e3/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-16 11:27:20,147 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:27:20,213 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:27:20,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20 WrapperNode [2022-11-16 11:27:20,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:27:20,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:27:20,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:27:20,215 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:27:20,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,257 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,293 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 229 [2022-11-16 11:27:20,294 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:27:20,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:27:20,295 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:27:20,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:27:20,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,309 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:27:20,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:27:20,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:27:20,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:27:20,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (1/1) ... [2022-11-16 11:27:20,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:27:20,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:27:20,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:27:20,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fbf2efc8-90db-412c-9ad3-22103b92e3e3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:27:20,415 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-11-16 11:27:20,415 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-11-16 11:27:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-11-16 11:27:20,416 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-11-16 11:27:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:27:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:27:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:27:20,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:27:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-16 11:27:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:27:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:27:20,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:27:20,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:27:20,419 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:27:20,641 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:27:20,643 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:27:21,248 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:27:21,259 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:27:21,259 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 11:27:21,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:27:21 BoogieIcfgContainer [2022-11-16 11:27:21,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:27:21,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:27:21,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:27:21,272 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:27:21,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:27:19" (1/3) ... [2022-11-16 11:27:21,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d5b2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:27:21, skipping insertion in model container [2022-11-16 11:27:21,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:27:20" (2/3) ... [2022-11-16 11:27:21,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d5b2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:27:21, skipping insertion in model container [2022-11-16 11:27:21,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:27:21" (3/3) ... [2022-11-16 11:27:21,275 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2022-11-16 11:27:21,284 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:27:21,295 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:27:21,295 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-16 11:27:21,295 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:27:21,477 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 11:27:21,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 281 transitions, 578 flow [2022-11-16 11:27:21,678 INFO L130 PetriNetUnfolder]: 17/279 cut-off events. [2022-11-16 11:27:21,678 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:27:21,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 279 events. 17/279 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 622 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 227. Up to 2 conditions per place. [2022-11-16 11:27:21,691 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 281 transitions, 578 flow [2022-11-16 11:27:21,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 268 transitions, 545 flow [2022-11-16 11:27:21,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:27:21,742 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;@296aafd4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:27:21,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-16 11:27:21,768 INFO L130 PetriNetUnfolder]: 1/75 cut-off events. [2022-11-16 11:27:21,768 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:27:21,769 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:21,769 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] [2022-11-16 11:27:21,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writer_fnErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-16 11:27:21,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash -50364907, now seen corresponding path program 1 times [2022-11-16 11:27:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:21,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360920514] [2022-11-16 11:27:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:21,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:22,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:22,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360920514] [2022-11-16 11:27:22,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360920514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:22,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:22,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:27:22,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135035481] [2022-11-16 11:27:22,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:22,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:22,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:22,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:22,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:22,261 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 281 [2022-11-16 11:27:22,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 268 transitions, 545 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:22,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:22,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 281 [2022-11-16 11:27:22,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:22,438 INFO L130 PetriNetUnfolder]: 32/404 cut-off events. [2022-11-16 11:27:22,438 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-11-16 11:27:22,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 404 events. 32/404 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2057 event pairs, 7 based on Foata normal form. 97/440 useless extension candidates. Maximal degree in co-relation 446. Up to 45 conditions per place. [2022-11-16 11:27:22,448 INFO L137 encePairwiseOnDemand]: 264/281 looper letters, 24 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-11-16 11:27:22,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 267 transitions, 598 flow [2022-11-16 11:27:22,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:22,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:27:22,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2022-11-16 11:27:22,466 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9608540925266904 [2022-11-16 11:27:22,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2022-11-16 11:27:22,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2022-11-16 11:27:22,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:22,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2022-11-16 11:27:22,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.0) internal successors, (810), 3 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:22,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:22,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:22,488 INFO L175 Difference]: Start difference. First operand has 258 places, 268 transitions, 545 flow. Second operand 3 states and 810 transitions. [2022-11-16 11:27:22,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 267 transitions, 598 flow [2022-11-16 11:27:22,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 267 transitions, 591 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 11:27:22,498 INFO L231 Difference]: Finished difference. Result has 258 places, 259 transitions, 540 flow [2022-11-16 11:27:22,501 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=540, PETRI_PLACES=258, PETRI_TRANSITIONS=259} [2022-11-16 11:27:22,504 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 0 predicate places. [2022-11-16 11:27:22,505 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 259 transitions, 540 flow [2022-11-16 11:27:22,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:22,506 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:22,506 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] [2022-11-16 11:27:22,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:27:22,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-16 11:27:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash -321590637, now seen corresponding path program 1 times [2022-11-16 11:27:22,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:22,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645336447] [2022-11-16 11:27:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:22,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:22,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:22,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645336447] [2022-11-16 11:27:22,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645336447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:22,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:22,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 11:27:22,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721842688] [2022-11-16 11:27:22,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:22,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:27:22,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:22,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:27:22,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:27:22,658 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 281 [2022-11-16 11:27:22,660 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 259 transitions, 540 flow. Second operand has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:22,660 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:22,661 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 281 [2022-11-16 11:27:22,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:22,817 INFO L130 PetriNetUnfolder]: 9/334 cut-off events. [2022-11-16 11:27:22,817 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 11:27:22,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 334 events. 9/334 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 874 event pairs, 0 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 321. Up to 19 conditions per place. [2022-11-16 11:27:22,826 INFO L137 encePairwiseOnDemand]: 274/281 looper letters, 24 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-11-16 11:27:22,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 267 transitions, 608 flow [2022-11-16 11:27:22,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:27:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:27:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2022-11-16 11:27:22,829 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.933570581257414 [2022-11-16 11:27:22,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2022-11-16 11:27:22,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2022-11-16 11:27:22,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:22,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2022-11-16 11:27:22,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 262.3333333333333) internal successors, (787), 3 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:22,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:22,839 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:22,839 INFO L175 Difference]: Start difference. First operand has 258 places, 259 transitions, 540 flow. Second operand 3 states and 787 transitions. [2022-11-16 11:27:22,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 267 transitions, 608 flow [2022-11-16 11:27:22,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 267 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:27:22,851 INFO L231 Difference]: Finished difference. Result has 260 places, 260 transitions, 558 flow [2022-11-16 11:27:22,851 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=558, PETRI_PLACES=260, PETRI_TRANSITIONS=260} [2022-11-16 11:27:22,852 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 2 predicate places. [2022-11-16 11:27:22,853 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 260 transitions, 558 flow [2022-11-16 11:27:22,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.0) internal successors, (762), 3 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:22,854 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:22,854 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] [2022-11-16 11:27:22,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:27:22,855 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting writer_fnErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-16 11:27:22,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:22,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1576764613, now seen corresponding path program 1 times [2022-11-16 11:27:22,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:22,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549159629] [2022-11-16 11:27:22,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:22,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:24,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:24,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:24,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549159629] [2022-11-16 11:27:24,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549159629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:24,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:24,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:27:24,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592580211] [2022-11-16 11:27:24,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:24,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:27:24,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:24,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:27:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:27:24,249 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 281 [2022-11-16 11:27:24,254 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 260 transitions, 558 flow. Second operand has 17 states, 17 states have (on average 186.23529411764707) internal successors, (3166), 17 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:24,254 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:24,254 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 281 [2022-11-16 11:27:24,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:27:42,283 INFO L130 PetriNetUnfolder]: 28922/111178 cut-off events. [2022-11-16 11:27:42,283 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-16 11:27:42,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157720 conditions, 111178 events. 28922/111178 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 1661. Compared 1624597 event pairs, 8252 based on Foata normal form. 0/95346 useless extension candidates. Maximal degree in co-relation 59357. Up to 30598 conditions per place. [2022-11-16 11:27:43,085 INFO L137 encePairwiseOnDemand]: 261/281 looper letters, 311 selfloop transitions, 56 changer transitions 0/547 dead transitions. [2022-11-16 11:27:43,085 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 547 transitions, 1873 flow [2022-11-16 11:27:43,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:27:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:27:43,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4791 transitions. [2022-11-16 11:27:43,097 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7104092526690391 [2022-11-16 11:27:43,097 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4791 transitions. [2022-11-16 11:27:43,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4791 transitions. [2022-11-16 11:27:43,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:27:43,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4791 transitions. [2022-11-16 11:27:43,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.625) internal successors, (4791), 24 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:43,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 281.0) internal successors, (7025), 25 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:43,131 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 281.0) internal successors, (7025), 25 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:43,132 INFO L175 Difference]: Start difference. First operand has 260 places, 260 transitions, 558 flow. Second operand 24 states and 4791 transitions. [2022-11-16 11:27:43,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 547 transitions, 1873 flow [2022-11-16 11:27:43,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 547 transitions, 1871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:27:43,153 INFO L231 Difference]: Finished difference. Result has 298 places, 315 transitions, 923 flow [2022-11-16 11:27:43,154 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=923, PETRI_PLACES=298, PETRI_TRANSITIONS=315} [2022-11-16 11:27:43,156 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 40 predicate places. [2022-11-16 11:27:43,157 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 315 transitions, 923 flow [2022-11-16 11:27:43,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 186.23529411764707) internal successors, (3166), 17 states have internal predecessors, (3166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:43,160 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:27:43,160 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] [2022-11-16 11:27:43,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:27:43,161 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-16 11:27:43,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:27:43,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2134931161, now seen corresponding path program 1 times [2022-11-16 11:27:43,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:27:43,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295942701] [2022-11-16 11:27:43,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:27:43,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:27:43,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:27:44,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:27:44,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:27:44,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295942701] [2022-11-16 11:27:44,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295942701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:27:44,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:27:44,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:27:44,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188497331] [2022-11-16 11:27:44,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:27:44,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-16 11:27:44,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:27:44,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-16 11:27:44,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:27:44,276 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 281 [2022-11-16 11:27:44,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 315 transitions, 923 flow. Second operand has 17 states, 17 states have (on average 185.35294117647058) internal successors, (3151), 17 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:27:44,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:27:44,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 281 [2022-11-16 11:27:44,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:28:08,821 INFO L130 PetriNetUnfolder]: 36578/149390 cut-off events. [2022-11-16 11:28:08,821 INFO L131 PetriNetUnfolder]: For 25118/25388 co-relation queries the response was YES. [2022-11-16 11:28:09,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231580 conditions, 149390 events. 36578/149390 cut-off events. For 25118/25388 co-relation queries the response was YES. Maximal size of possible extension queue 2103. Compared 2290855 event pairs, 10677 based on Foata normal form. 217/128117 useless extension candidates. Maximal degree in co-relation 231473. Up to 40378 conditions per place. [2022-11-16 11:28:10,254 INFO L137 encePairwiseOnDemand]: 261/281 looper letters, 309 selfloop transitions, 142 changer transitions 0/648 dead transitions. [2022-11-16 11:28:10,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 648 transitions, 2873 flow [2022-11-16 11:28:10,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:28:10,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:28:10,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4763 transitions. [2022-11-16 11:28:10,268 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7062574139976275 [2022-11-16 11:28:10,268 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4763 transitions. [2022-11-16 11:28:10,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4763 transitions. [2022-11-16 11:28:10,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:28:10,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4763 transitions. [2022-11-16 11:28:10,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 198.45833333333334) internal successors, (4763), 24 states have internal predecessors, (4763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:10,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 281.0) internal successors, (7025), 25 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:10,299 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 281.0) internal successors, (7025), 25 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:10,299 INFO L175 Difference]: Start difference. First operand has 298 places, 315 transitions, 923 flow. Second operand 24 states and 4763 transitions. [2022-11-16 11:28:10,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 648 transitions, 2873 flow [2022-11-16 11:28:11,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 648 transitions, 2864 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:28:11,854 INFO L231 Difference]: Finished difference. Result has 332 places, 423 transitions, 1966 flow [2022-11-16 11:28:11,854 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1966, PETRI_PLACES=332, PETRI_TRANSITIONS=423} [2022-11-16 11:28:11,855 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 74 predicate places. [2022-11-16 11:28:11,855 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 423 transitions, 1966 flow [2022-11-16 11:28:11,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 185.35294117647058) internal successors, (3151), 17 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:11,856 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:28:11,856 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:28:11,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:28:11,857 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting writer_fnErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [reader_twoErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, reader_twoErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 43 more)] === [2022-11-16 11:28:11,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:28:11,858 INFO L85 PathProgramCache]: Analyzing trace with hash -145831177, now seen corresponding path program 1 times [2022-11-16 11:28:11,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:28:11,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774409938] [2022-11-16 11:28:11,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:28:11,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:28:11,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:28:12,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:28:12,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:28:12,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774409938] [2022-11-16 11:28:12,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774409938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:28:12,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:28:12,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:28:12,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194886476] [2022-11-16 11:28:12,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:28:12,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:28:12,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:28:12,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:28:12,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:28:12,219 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 281 [2022-11-16 11:28:12,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 423 transitions, 1966 flow. Second operand has 11 states, 11 states have (on average 189.54545454545453) internal successors, (2085), 11 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:28:12,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:28:12,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 281 [2022-11-16 11:28:12,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand