./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/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_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/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_e4c0950c-c8f4-4723-abc5-e5d43963af10/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 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-8393723 [2022-11-18 18:44:28,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:44:28,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:44:28,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:44:28,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:44:28,820 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:44:28,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:44:28,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:44:28,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:44:28,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:44:28,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:44:28,841 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:44:28,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:44:28,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:44:28,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:44:28,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:44:28,846 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:44:28,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:44:28,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:44:28,853 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:44:28,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:44:28,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:44:28,862 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:44:28,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:44:28,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:44:28,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:44:28,879 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:44:28,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:44:28,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:44:28,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:44:28,886 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:44:28,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:44:28,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:44:28,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:44:28,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:44:28,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:44:28,895 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:44:28,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:44:28,896 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:44:28,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:44:28,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:44:28,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:44:28,952 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:44:28,953 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:44:28,953 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:44:28,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:44:28,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:44:28,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:44:28,956 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:44:28,956 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:44:28,957 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:44:28,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:44:28,958 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:44:28,959 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:44:28,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:44:28,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:44:28,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:44:28,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:44:28,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:44:28,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:44:28,960 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:44:28,961 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:44:28,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:44:28,961 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:44:28,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:44:28,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:44:28,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:44:28,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:44:28,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:44:28,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:44:28,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:44:28,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:44:28,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:44:28,966 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:44:28,966 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:44:28,966 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:44:28,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:44:28,967 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2022-11-18 18:44:29,345 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:44:29,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:44:29,379 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:44:29,381 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:44:29,382 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:44:29,384 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-18 18:44:29,475 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/data/558b41927/5fb07a784e2d455d808f6232bfab7441/FLAG9adc2045c [2022-11-18 18:44:30,230 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:44:30,231 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-18 18:44:30,266 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/data/558b41927/5fb07a784e2d455d808f6232bfab7441/FLAG9adc2045c [2022-11-18 18:44:30,368 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/data/558b41927/5fb07a784e2d455d808f6232bfab7441 [2022-11-18 18:44:30,373 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:44:30,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:44:30,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:44:30,381 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:44:30,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:44:30,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42f3c4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:30, skipping insertion in model container [2022-11-18 18:44:30,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:44:30" (1/1) ... [2022-11-18 18:44:30,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:44:30,484 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:44:30,741 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 18:44:31,126 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-18 18:44:31,132 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-18 18:44:31,133 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-18 18:44:31,233 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-18 18:44:31,234 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-18 18:44:31,239 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-18 18:44:31,241 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-18 18:44:31,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:44:31,275 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:44:31,303 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-18 18:44:31,342 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-18 18:44:31,344 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-18 18:44:31,344 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-18 18:44:31,358 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-18 18:44:31,358 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-18 18:44:31,360 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-18 18:44:31,361 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_e4c0950c-c8f4-4723-abc5-e5d43963af10/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-18 18:44:31,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:44:31,438 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:44:31,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31 WrapperNode [2022-11-18 18:44:31,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:44:31,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:44:31,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:44:31,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:44:31,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,538 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 229 [2022-11-18 18:44:31,538 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:44:31,539 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:44:31,539 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:44:31,539 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:44:31,555 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,597 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:44:31,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:44:31,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:44:31,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:44:31,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (1/1) ... [2022-11-18 18:44:31,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:44:31,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:44:31,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:44:31,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e4c0950c-c8f4-4723-abc5-e5d43963af10/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:44:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-11-18 18:44:31,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-11-18 18:44:31,710 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-11-18 18:44:31,711 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-11-18 18:44:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:44:31,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:44:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:44:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:44:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 18:44:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:44:31,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:44:31,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:44:31,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:44:31,715 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 18:44:31,894 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:44:31,897 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:44:32,613 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:44:32,631 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:44:32,632 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 18:44:32,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:44:32 BoogieIcfgContainer [2022-11-18 18:44:32,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:44:32,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:44:32,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:44:32,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:44:32,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:44:30" (1/3) ... [2022-11-18 18:44:32,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbeea35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:44:32, skipping insertion in model container [2022-11-18 18:44:32,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:44:31" (2/3) ... [2022-11-18 18:44:32,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dbeea35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:44:32, skipping insertion in model container [2022-11-18 18:44:32,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:44:32" (3/3) ... [2022-11-18 18:44:32,651 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2022-11-18 18:44:32,662 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:44:32,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:44:32,704 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-18 18:44:32,704 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:44:32,888 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 18:44:32,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 281 transitions, 578 flow [2022-11-18 18:44:33,072 INFO L130 PetriNetUnfolder]: 17/279 cut-off events. [2022-11-18 18:44:33,073 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:44:33,090 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. [2022-11-18 18:44:33,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 281 transitions, 578 flow [2022-11-18 18:44:33,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 258 places, 268 transitions, 545 flow [2022-11-18 18:44:33,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:44:33,126 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;@7b58f014, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:44:33,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2022-11-18 18:44:33,146 INFO L130 PetriNetUnfolder]: 1/75 cut-off events. [2022-11-18 18:44:33,147 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:44:33,147 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:44:33,148 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] [2022-11-18 18:44:33,149 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)] === [2022-11-18 18:44:33,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash -50364907, now seen corresponding path program 1 times [2022-11-18 18:44:33,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:33,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896838389] [2022-11-18 18:44:33,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:33,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:33,573 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 18:44:33,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:33,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896838389] [2022-11-18 18:44:33,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896838389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:33,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:33,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:44:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875325534] [2022-11-18 18:44:33,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:33,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:44:33,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:33,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:44:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:44:33,661 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 281 [2022-11-18 18:44:33,671 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) [2022-11-18 18:44:33,671 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:44:33,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 281 [2022-11-18 18:44:33,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:44:34,030 INFO L130 PetriNetUnfolder]: 32/404 cut-off events. [2022-11-18 18:44:34,031 INFO L131 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-11-18 18:44:34,041 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. [2022-11-18 18:44:34,049 INFO L137 encePairwiseOnDemand]: 264/281 looper letters, 24 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-11-18 18:44:34,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 267 transitions, 598 flow [2022-11-18 18:44:34,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:44:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:44:34,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 810 transitions. [2022-11-18 18:44:34,080 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9608540925266904 [2022-11-18 18:44:34,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 810 transitions. [2022-11-18 18:44:34,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 810 transitions. [2022-11-18 18:44:34,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:44:34,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 810 transitions. [2022-11-18 18:44:34,100 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) [2022-11-18 18:44:34,114 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) [2022-11-18 18:44:34,115 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) [2022-11-18 18:44:34,117 INFO L175 Difference]: Start difference. First operand has 258 places, 268 transitions, 545 flow. Second operand 3 states and 810 transitions. [2022-11-18 18:44:34,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 267 transitions, 598 flow [2022-11-18 18:44:34,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 267 transitions, 591 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 18:44:34,138 INFO L231 Difference]: Finished difference. Result has 258 places, 259 transitions, 540 flow [2022-11-18 18:44:34,141 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} [2022-11-18 18:44:34,146 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 0 predicate places. [2022-11-18 18:44:34,147 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 259 transitions, 540 flow [2022-11-18 18:44:34,148 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) [2022-11-18 18:44:34,148 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:44:34,149 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 18:44:34,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:44:34,155 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)] === [2022-11-18 18:44:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash -321590637, now seen corresponding path program 1 times [2022-11-18 18:44:34,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:34,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660923065] [2022-11-18 18:44:34,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:34,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:34,315 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 18:44:34,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:34,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660923065] [2022-11-18 18:44:34,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660923065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:34,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:34,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:44:34,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141223516] [2022-11-18 18:44:34,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:34,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:44:34,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:34,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:44:34,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:44:34,322 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 281 [2022-11-18 18:44:34,336 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) [2022-11-18 18:44:34,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:44:34,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 281 [2022-11-18 18:44:34,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:44:34,550 INFO L130 PetriNetUnfolder]: 9/334 cut-off events. [2022-11-18 18:44:34,551 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 18:44:34,557 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. [2022-11-18 18:44:34,563 INFO L137 encePairwiseOnDemand]: 274/281 looper letters, 24 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-11-18 18:44:34,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 267 transitions, 608 flow [2022-11-18 18:44:34,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:44:34,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 18:44:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 787 transitions. [2022-11-18 18:44:34,566 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.933570581257414 [2022-11-18 18:44:34,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 787 transitions. [2022-11-18 18:44:34,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 787 transitions. [2022-11-18 18:44:34,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:44:34,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 787 transitions. [2022-11-18 18:44:34,570 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) [2022-11-18 18:44:34,573 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) [2022-11-18 18:44:34,574 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) [2022-11-18 18:44:34,574 INFO L175 Difference]: Start difference. First operand has 258 places, 259 transitions, 540 flow. Second operand 3 states and 787 transitions. [2022-11-18 18:44:34,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 267 transitions, 608 flow [2022-11-18 18:44:34,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 267 transitions, 606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:44:34,585 INFO L231 Difference]: Finished difference. Result has 260 places, 260 transitions, 558 flow [2022-11-18 18:44:34,586 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} [2022-11-18 18:44:34,587 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 2 predicate places. [2022-11-18 18:44:34,587 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 260 transitions, 558 flow [2022-11-18 18:44:34,589 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) [2022-11-18 18:44:34,589 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:44:34,589 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] [2022-11-18 18:44:34,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:44:34,590 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)] === [2022-11-18 18:44:34,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:44:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1576764613, now seen corresponding path program 1 times [2022-11-18 18:44:34,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:44:34,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238991267] [2022-11-18 18:44:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:44:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:44:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:44:36,362 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 18:44:36,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:44:36,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238991267] [2022-11-18 18:44:36,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238991267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:44:36,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:44:36,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 18:44:36,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778417171] [2022-11-18 18:44:36,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:44:36,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 18:44:36,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:44:36,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 18:44:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:44:36,373 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 281 [2022-11-18 18:44:36,378 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) [2022-11-18 18:44:36,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:44:36,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 281 [2022-11-18 18:44:36,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:44:59,597 INFO L130 PetriNetUnfolder]: 28922/111178 cut-off events. [2022-11-18 18:44:59,597 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2022-11-18 18:44:59,995 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. [2022-11-18 18:45:00,534 INFO L137 encePairwiseOnDemand]: 261/281 looper letters, 311 selfloop transitions, 56 changer transitions 0/547 dead transitions. [2022-11-18 18:45:00,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 547 transitions, 1873 flow [2022-11-18 18:45:00,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:45:00,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:45:00,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4791 transitions. [2022-11-18 18:45:00,546 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7104092526690391 [2022-11-18 18:45:00,546 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4791 transitions. [2022-11-18 18:45:00,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4791 transitions. [2022-11-18 18:45:00,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:45:00,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4791 transitions. [2022-11-18 18:45:00,562 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) [2022-11-18 18:45:00,575 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) [2022-11-18 18:45:00,580 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) [2022-11-18 18:45:00,580 INFO L175 Difference]: Start difference. First operand has 260 places, 260 transitions, 558 flow. Second operand 24 states and 4791 transitions. [2022-11-18 18:45:00,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 547 transitions, 1873 flow [2022-11-18 18:45:00,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 547 transitions, 1871 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:45:00,615 INFO L231 Difference]: Finished difference. Result has 298 places, 315 transitions, 923 flow [2022-11-18 18:45:00,616 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} [2022-11-18 18:45:00,618 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 40 predicate places. [2022-11-18 18:45:00,619 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 315 transitions, 923 flow [2022-11-18 18:45:00,622 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) [2022-11-18 18:45:00,622 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:00,623 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] [2022-11-18 18:45:00,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:45:00,624 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)] === [2022-11-18 18:45:00,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash -2134931161, now seen corresponding path program 1 times [2022-11-18 18:45:00,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:00,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170637208] [2022-11-18 18:45:00,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:00,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:01,692 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 18:45:01,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:01,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170637208] [2022-11-18 18:45:01,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170637208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:01,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:01,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 18:45:01,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355870099] [2022-11-18 18:45:01,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:01,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 18:45:01,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:01,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 18:45:01,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-18 18:45:01,700 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 281 [2022-11-18 18:45:01,703 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) [2022-11-18 18:45:01,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:45:01,708 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 281 [2022-11-18 18:45:01,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:45:28,114 INFO L130 PetriNetUnfolder]: 36578/149390 cut-off events. [2022-11-18 18:45:28,114 INFO L131 PetriNetUnfolder]: For 25118/25388 co-relation queries the response was YES. [2022-11-18 18:45:29,265 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. [2022-11-18 18:45:29,880 INFO L137 encePairwiseOnDemand]: 261/281 looper letters, 309 selfloop transitions, 142 changer transitions 0/648 dead transitions. [2022-11-18 18:45:29,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 648 transitions, 2873 flow [2022-11-18 18:45:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-18 18:45:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-18 18:45:29,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4763 transitions. [2022-11-18 18:45:29,899 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7062574139976275 [2022-11-18 18:45:29,899 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4763 transitions. [2022-11-18 18:45:29,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4763 transitions. [2022-11-18 18:45:29,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:45:29,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4763 transitions. [2022-11-18 18:45:29,913 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) [2022-11-18 18:45:29,925 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) [2022-11-18 18:45:29,930 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) [2022-11-18 18:45:29,931 INFO L175 Difference]: Start difference. First operand has 298 places, 315 transitions, 923 flow. Second operand 24 states and 4763 transitions. [2022-11-18 18:45:29,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 648 transitions, 2873 flow [2022-11-18 18:45:31,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 648 transitions, 2864 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:45:31,542 INFO L231 Difference]: Finished difference. Result has 332 places, 423 transitions, 1966 flow [2022-11-18 18:45:31,543 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} [2022-11-18 18:45:31,544 INFO L288 CegarLoopForPetriNet]: 258 programPoint places, 74 predicate places. [2022-11-18 18:45:31,544 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 423 transitions, 1966 flow [2022-11-18 18:45:31,546 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) [2022-11-18 18:45:31,546 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:45:31,546 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:45:31,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:45:31,547 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)] === [2022-11-18 18:45:31,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:45:31,547 INFO L85 PathProgramCache]: Analyzing trace with hash -145831177, now seen corresponding path program 1 times [2022-11-18 18:45:31,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:45:31,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678997802] [2022-11-18 18:45:31,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:45:31,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:45:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:45:31,969 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 18:45:31,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:45:31,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678997802] [2022-11-18 18:45:31,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678997802] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:45:31,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:45:31,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:45:31,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132382408] [2022-11-18 18:45:31,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:45:31,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:45:31,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:45:31,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:45:31,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:45:31,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 281 [2022-11-18 18:45:31,977 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) [2022-11-18 18:45:31,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:45:31,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 281 [2022-11-18 18:45:31,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand